研究業績

126	R.Gan, H.Miyazaki, M.Haneda, T.Hayakawa*,
	“ Study on Reducibility Optimization on BaTiO₃ for Enhancing C₂ Yield in the Oxidative Coupling of Methane. ”,
	Mater.Res.Bull. 188, 113415/1-11 (2025). https://doi.org/10.1016/j.materresbull.2025.113415

125	R.Oka, T.Hayakawa*,
	“ Preparation of Ca₂MnO₄ film using Bayesian optimization and their black color properties due to Ti⁴⁺-doping. ”,
	Chem.Lett. 53, upae221 (2024). https://doi.org/10.1093/chemle/upae221

124	M.R.Cicconi, H.Deng, T.Otsuka, A.T.Mahesh, N.H.Khansur, T.Hayakawa*, D. de Ligny,
	“ Photoluminescence Study of Undoped and Eu-Doped Alkali-Niobate Aluminosilicate Glasses and Glass-Ceramics. ”,
	Materials 17, 2283/1-22 (2024). https://doi.org/10.3390/ma17102283

123	T.Otsuka, R.Oka, M.R.Cicconi, Dominique de Ligny, T.Hayakawa*,
	“Tuning the luminescence color of Eu³⁺- and alkali-ion-codoped Sr₂CaWO₆ orange-red phosphors: Eu³⁺ site distribution and site-selective photoluminescence studies.”,
	APL Mater. 12, 031129/1-16 (2024). https://doi.org/10.1063/5.0197892

122	T.Otsuka, R.Oka, T.Hayakawa*,
	“Eu³⁺ site distribution and local distortion of photoluminescent Ca₃WO₆:(Eu³⁺, K⁺) double perovskites as high-color-purity red phosphors.”,
	Adv.Sci. 2023, 2302559/1-17 (2023). https://doi.org/10.1002/advs.202302559

121	R. Oka, T.Hayakawa*,
	“Synthesis of calcium manganese oxide films using a sol-gel method and evaluation of color and photocatalytic properties.”,
	Phys.Status Solidi RRL 2023, 2300233/1-6 (2023). https://doi.org/10.1002/pssr.202300233

120	R. Oka, T.Hayakawa*,
	“LocalStructural InvestigationofNear-Infrared-Reflective Black Ca₂(Mn,Ti)O₄ pigments using synchrotron radiation X-ray and density functional theory calculations.”,
	Inorg. Chem. 62, 14647-14658 (2023). https://doi.org/10.1021/acs.inorgchem.3c01897

119	T.Otsuka, R.Oka, M.Karasuyama, T.Hayakawa*,
	“Photoluminescence color prediction for Eu³⁺-doped perovskite red phosphors using machine learning.”,
	Phys.Status Solidi RRL 2023, 2300237/1-6 (2023). https://doi.org/10.1002/pssr.202300237

118	H.Hashimoto, R.Oka, T.Hayakawa*, C.Brabec,
	“Bandgap and photoluminescence tuanbility of lead-free Cs₃Bi₂(Br,I)₉ solid solution compounds.”,
	Phys.Status Solidi RRL 2023, 2300241/1-6 (2023). https://doi.org/10.1002/pssr.202300241

117	R.Toyoda, K.Usui, T.Hirota, K.Kimura, Y.Onodera, M.R.Cicconi, R.Belli, M.Brehl, J.Lubauer, U.Lohbauer, H.Tajiri, K.Ikeda, T.Hayakawa*, D.de Ligny, S.Kohara, K.Hayashi,
	“Atomic structure of ZrO₂-doped Li₂O-SiO₂-based multi-component glasses revealed by molecular dynamics-reverse Monte Carlo modeling.”,
	J. Non-Cryst. Solids 616, 122472 (2023). https://doi.org/10.1016/j.jnoncrysol.2023.122472

116	M R. Cicconi, D.K.Dobesh, B.Schroeder, T.Otsuka, T.Hayakawa, D.de Ligny
	“Alkali-Niobate aluminosilicate glasses: Structure and properties.”,
	Opt.Mater.X 18, 100228 (2023). https://doi.org/10.1016/j.omx.2023.100228

115	Y.Gao, R.Iwasaki, D.Hamana, J.Iihama, S.Honda, M.Kumari, T.Hayakawa, S.Bernard, P.Thomas, Y.Iwamoto*
	“Polymer-derived β-SiAlON:Eu²⁺ phosphors.”,
	Int J Appl Ceram Technol. 20, 768-779 (2023). https://doi.org/10.1111/ijac.14228

114	Y.Gao, R.Iwasaki, J.Iihama, D.Hamana, R.Iwasaki, S.Honda, T.Asaka, M.Kumari, T.Hayakawa, S.Bernard, P.Thomas, Y.Iwamoto*
	“Green emitting -SiAlON:Eu²⁺ phosphors derived from chemically modified perhydropolysilazanes.”,
	Int J Appl Ceram Technol. 20, 153-165 (2023). https://doi.org/10.1111/ijac.14139

113	M.Choi, C.Brabec, T.Hayakawa,
	“X-ray diffraction, micro-Raman and X-ray photoemission spectroscopic investigations for hydrothermally obtained hybrid compounds of delafossite CuGaO2 and wurtzite ZnO.”,
	Ceramics 5(4), 655-672 (2022).

112	Y.Gao, D.Hamana, R.Iwasaki, J.Iihama, S.Honda, M.Kumari, T.Hayakawa, S.Bernard, P.Thomas, Y.Iwamoto*
	“Chemical route for synthesis of β-SiAlON:Eu2+ phosphors combining polymer-derived ceramics route with non-hydrolytic sol-gel chemistry.”,
	J.Sol-Gel Sci. Technol. , online avaible (2022). https://doi.org/10.1007/s10971-022-05879-w

111	R. Oka, T.Hayakawa*,
	“Raman spectroscopic investigation and electronic states calculation for Ca2(Mn,Ti)O4 black pigments with high near-infrared (NIR) reflectivity.”,
	Inorg. Chem. 61, 6500-6507 (2022).

110	J.de Clermont-Gallerande, D.Taniguchi, M.Colas, P.Thomas, T.Hayakawa*,
	“High temperature investigation of TeO2-Na2O-ZnO glasses.”,
	Phys.Status Solidi (b) 2200065, 2200065/1-7 (2022).

109	T.Otsuka, M.R.Cicconi, D.Dobesh, B.Schroeder, T.Hayakawa*,
	“93Nb NMR study of (K, Na)NbO3-doped SiO2-Na2O-Al2O3 glasses.”,
	Phys.Status Solidi (b) 2200016, 2200016/1-6 (2022).

108	*T.Hayakawa, R.Ikeshita, J.-R.Duclere, A.Leconte,**,
	“Simple method to estimate fractional numbers of Eu3+ ions in different phases in highly luminescent ZrO2-SiO2 nanocomposites.”,
	Phys.Status Solidi (b) 2100560, 2100560/1-9 (2022).

107	R.Oka, D.Nishi, T.Hayakawa,
	“Novel findings on optical properties of Mn4+-doped (Rb,K)2Ge4O9 phosphors.”,
	Phys.Status Solidi (b) 2100615, 2100615/1-8.

106	M.R.Cicconi, R.Belli, M.Brehl, J.Lubauer, T.Hayakawa, K.Kimura, T.Hirota, K.Usui, S.Kohara, Y.Onodera, U.Lohbauer, K.Hayashi, D.de Ligny,
	“Nucleation mechanisms in a SiO2-Li2O-P2O5-ZrO2 biomedical glass-ceramic: Insights on crystallisation, residual glasses and Zr4+ structural environment.”,
	J.Eur.Ceram.Soc. 42, 1762-1775 (2022). 14 (4) (2021) 952/1-14.

105	J.de Clermont-Gallerande, D.Taniguchi, M.Colas, P.Thomas, T.Hayakawa*,
	“Influence of Nd3+ modifying on 80TeO2-xZnO-(20-x)Na2O ternary glass system”,
	APL Mater. 9 (2021) 111111/1-17. https://doi.org/10.1063/5.0061880

104	T.Otsuka, M.Brehl, M.R.Ciconni, D.de Ligny, T.Hayakawa*,
	“Thermal evolution to glass-ceramics bearing calcium tungstate crystals in borate glasses doped with photoluminescent Eu³⁺ ions”,
	Materials 14 (4) (2021) 952/1-14.

103	J.de Clermont-Gallerande, S.Saito, M.Colas, P.Thomas, T.Hayakawa*,
	“New understanding of TeO₂-ZnO-Na₂O ternary glass system” ,
	J.Alloys Compds. 854 (2021) 157072/1-9.

102	J.de Clermont-Gallerande, S.Saito, T.Hayakawa*, M.Colas, J.-R.Duclere, P.Thomas,
	“Optical properties of Nd³⁺-doped TeO₂-TiO₂-ZnO glasses with lower hydroxyl content” ,
	J.Non-Cryst.Solids 528 (1) (2020) 119678/1-10.

101	J.de Clermont-Gallerande, M.Dutreilh -Colas, R.Celarie, M.Berger, D.deLigny, T.Hayakawa*, P.Thomas,
	“Correlation between mechanical and structural properties as a function of temperature within the TeO₂-TiO₂-ZnO ternary system” ,
	J.Non-Cryst.Solids 528 (1) (2020) 119716/1-10.

100	M.U.Choi,T.Hayakawa*,
	“Hydrothermal synthesisi and photocatalytic properties of CuGaO₂/ZnO hexagonal platelet hybrids, ”
	Mater. Res. Bull. 113 (5) (2019) 84-89.

99	M.Isogai, T.Hayakawa*, J.-R.Duclere, P.Thomas,
	“Quantum cutting properties of Tb³⁺/Yb³⁺ co-doped ZrO₂-SiO₂ nano-crystalized glasses synthesized via a sol-gel route, ”
	J. Alloys Compds. 781 (4) (2019) 315-320.

98	M.Isogai, A.Veber, M.R.Cicconi, T.Hayakawa*, D.de Ligny,
	“Devitrification behavior of sol-gel derived ZrO₂-SiO₂ rare-earth doped glasses: correlation between structural and optical properties, ”
	Ceramics. 1, 274-286 (2018).

97	J.-R.Duclere, T. Hayakawa, E.M.Roginskii, M.B.Smirnov, A.mirgorodsky, V.Couderc, O.Masson, M.Colas, O.Noguera, V.Rodriguez, P.Thomas,
	“Third order nonlinear optical properties of a paratellurite single crystal, ”
	J.Appl.Phys. 123, 183105-1~6 (2018).

96	R.Ikeshita, T. Hayakawa*, M.Isogai, Y.Iwamoto, J.-R. Duclere, F.Remondiere, P.Thomas, A.Lecomte,
	“Novel method to Control Initial Crystallization of Eu³⁺ Doped ZrO₂ Nanophosphors Derived from a Sol-Gel Route Based on HNO₃ and their Site-selective Photoluminescence, ”
	J.Ceram.Soc.Japan 126 (7), 551-556 (2018).

95	M.Dolhen, M.Tanaka, V.Couderc, S.Chenu, G.Delaizir, T. Hayakawa, J.Cornette, M.Colas, P.Thomas, J.-R.Duclere*,
	“Laser emission in Nd³⁺-doped transparent polycrystalline tellurite ceramics, ”
	Sci.Rep. 8 (2018) 4640 (2018).

94	Y.Noda, T.Asaka, H.Fudouzi, T. Hayakawa*,
	“Accumulation and Interparticle Connections of Triangular Ag-Coated Au Nanoprisms by Oil-coating method for SERS Applications, ”
	Appl. Surf. Sci. 435, 687-698 (2018).

93	Y.Ohta, T. Hayakawa, T.Inomata, T.Ozawa, H.Masuda*,
	“Temperature dependency of photoluminescence emitted with heat-treatment of nano-boehmite intercalated with monoethanolamine derivatives, ”
	Chem. Lett. 46 (5), 722-725 (2017).

92	Y.Ohta, T. Hayakawa, T.Inomata, T.Ozawa, H.Masuda*,
	“A blue photoluminescent nano boehmite prepared by a solvothermal reaction of aluminum hydroxide gel in monoethanolamine at low temperature synthesis, ”
	Chem. Lett. 46 (1), 32-34 (2017).

91	M. Shimoda, M. Uchida, T. Hayakawa*, P. Thomas,
	“Synthesis and glass-structure of transparent zinc?niobate-tellurite glasses with low hydroxyl impurities, ”
	Ceram. Int. 43 (3), 2962-2968 (2017).

90	A.Bertrand, J.Carreaud, S.Chenu, M.Allix, E.Veron, J-R.Duclere, Y.Launay, T.Hayakawa, C.Genevois, F.Brisset, F.Celarie, P.Thomas, G.Delaizir*,
	“Scalable and formable tellurite-based transparent ceramics for near infrared applications, ”
	Adv. Opt. Mater. 4 (10), 1482-1486 (2016).

89	K.Kato, T.Hayakawa*, Y.Kasuya, P.Thomas,
	“Influence of Al₂O₃ incorporation on the third-order nonlinear optical properties of Ag₂O-TeO₂ glasses”
	J.Non-Cryst. Solids 431 (1), 97-106 (2016).

88	Y.Noda, T.Hayakawa*
	“Immobilization of Ag-deposited Au nanoprisms by thiol-coupling and oil-coating methods”
	Jpn. J. Appl. Phys. 55, 01AE11:1-5 (2016).

87	V.P.Tuyen, B.Sengthong, V.X.Quang, P.V.Doc, H.V.Tuyen, L.X.Hung, N.T.Thanh, M.Nogami, T.Hayakawa*, B.T.Huy
	“Dy³⁺ ions as optical probes for studying structure of boro-tellurite glasses”
	J. Lumin. 178, 27-33 (2016).

86	Y.Noda, T.Hayakawa*
	“Systematic Control of Edge-lengths, Tip-Sharpness, Thickness and Localized Surface Plasmon Resonance of Triangular Au Nanoprisms”
	J.Nanoparticles Res. 18, 314:1-12 (2016).

85	X.T.Zhang, T.Hayakawa*,Y.Ishikawa, N.Jishou, M.Nogami,
	“Structural investigation and Eu³⁺ Luminescence Properties of LaF₃:Eu³⁺ Nanophosphors”,
	J. Alloys Compds. 664, 77-81 (2015).

84	N. Ghribi, M.Colas, J.-R.Duclere, T.Hayakawa*, J.Carreaud, R.Karray, A.Kabadou, P.Thomas,
	“Thermal, optical and structural properties of glasses within the TeO₂-TiO₂-ZnO system”,
	J. Alloys Compds. 622, 333-340 (2015).

83	A. Bertrand, J. Carreaud, G. Delaizir, M. Shimoda, J. R. Duclere, M. Colas, M. Belleil, J. Cornette, T.Hayakawa*, C. Genevois, E. Veron, M. Allix, F. Brisset, P. Thomas,
	“New transparent glass-ceramics based on the crystallization of 'anti-glass' spherulites in the Bi₂O₃-Nb₂O₅-TeO₂ system”,
	Cryst. Growth Des. 15 (10) 5086-5096 (2015).

82	J. Carreaud, A. Labruyere, H. Dardar, F. Moisy, J.-R. Duclere, V. Couderc, A. Bertrand1, M. Dutreilh-Colas, G. Delaizir, T.Hayakawa*, A. Crunteanu, P. Thomas,
	“Lasing effects in new Nd³⁺-doped TeO₂-Nb₂O₅-WO₃ bulk glasses”,
	Opt.Mater. 47, 99-107 (2015).

81	M.Uchida, T.Hayakawa*, T.Suhara, J.R.Duclere, P.Thomas,
	“Tm³⁺ concentration dependence on blue up-conversion photoluminescence for Tm³⁺/Yb³⁺ co-doped TeO₂-TlO_0.5-ZnO glasses”,
	Int. J. Appl. Glass Sci. 6 (1), 83-93 (2015).

80	Y. Kang, B. Thuy,Y. Shimokawa, T.Hayakawa, S. Sakaida, L. Miao, S. Tanemura, S. Honda, Y. Iwamoto*,
	“Relationship between Eu³⁺ substitution sites and photoluminescence properties of SrIn₂O₄:Eu³⁺ spinel phosphors”,
	J.Lumin. 169, 78-85 (2016).

79	M.Uchida, T.Hayakawa*, T.Suhara, J.R.Duclere, P.Thomas,
	“Raman investigation and glass-compositional dependence on blue up-conversion photoluminescence for Tm³⁺/Yb³⁺ co-doped TeO₂-TlO_0.5-ZnO glasses”
	Opt.Mater.Express 4 (4), 823-835 (2014).

78	Y.Kasuya, T.Suhara, T.Hayakawa*, P.Thomas, M.Nogami,
	“Glass structure and linear/nonlinear optical properties of Ag₂O-doped TeO₂ glasses”
	Key Engin. Mater. 617, 141-144 (2014).

77	Y.Ishikawa, T.Hayakawa*, K.Inoue, M.Nogami,
	“Cathodoluminescence properties of Pr³⁺-doped perovskite type transparent red luminescent thin films processed by a sol-gel method”
	J.Sol.Gel.Sci.Technol. 65, 324-328 (2013).

76	G. Kawamura, R. Yoshimura, K. Ota, S.-Y. Oh, N.Hakiri, H.Muto, T.Hayakawa*, A. Matsuda,
	“A unique approach to characterization of sol-gel-derived rare-earth-doped oxyfluoride glass-ceramics”
	J.Amer.Ceram.Soc. 96 (2), 476-480 (2013).

75	D. Linda, J-R. Duclere, T.Hayakawa*, M.Dutreilh-Colas, T.Cardinal, A.Mirgorodski, A.Kabadou, P.Thomas,
	“Optical properties of tellurite glasses elaborated within the TeO₂-Tl₂O-Ag₂O and TeO₂-ZnO-Ag₂O ternary systems”
	J.Alloys Compds. 561 (5), 151-160 (2013).

74	T.Hayakawa*, H.Koyama, M.Nogami, P.Thomas,
	“Optical properties of TeO₂-TiO₂ thin films doped with Eu³⁺ ions fabricated by sol-gel processing”
	J.Univ.Chem.Tech.Met. 47 (4), 381-386 (2012).

73	T.Suhara, T.Hayakawa*, H.Koyama, M.Nogami, P.Thomas,
	“Third-order nonlinear optical properties and low-frequency Raman scattering of MO-Nb₂O₅-TeO₂ glasses”
	J.Univ.Chem.Tech.Met. 47 (4), 369-373 (2012).

72	T.Hayakawa*, S. Hayashi, .S. Miyazawa, T. Ohashi, K. Watanabe,
	“Polarized Raman mapping method for estimation of refractive index differences on grain-boundaries and in-line transmission properties of polycrystalline alumina”
	Opt. Mater. Exp. 2 (7), 914-919 (2012).

71	M.Aoyama, T.Hayakawa, S.Honda, Y.Iwamoto*,
	“Development of zeolite-derived novel aluminosilicate phosphors”
	J.Lumin. 132, 2603-2607 (2012).

70	N.T.Thanh, V.X.Quang, V.P.Tuyen, N.V.Tam, T.Hayakawa*, B.T.Huy,
	“Role of charge transfer state and host matrix in Eu³⁺-doped alkali-earth alkali fluoro-aluminoborate glasses”
	Opt.Mater. 34, 1477-1481 (2012).

69	Y.Tsutsui, T.Hayakawa*, G.Kawamura, M.Nogami,
	“Tuned longitudinal surface plasmon resonance and third-order nonlinear optical properties of gold nanorods”
	Nanotechnology 22, 275302/1-7 (2011).

68	M.Hayakawa, T.Hayakawa*, X.T.Zhang, and M.Nogami,
	“Optical detection of near infrared femtosecond laser-heating of Er³⁺-doped ZnO-Nb₂O₅-TeO₂ glass by green up-conversion fluorescence of Er³⁺ ions”
	J. Lumin. 131, 843-849 (2011).

67	X.T.Zhang, T.Hayakawa*, M.Nogami, Y.Ishikawa,
	“Structural and luminescence properties of polytype GdF₃:Eu³⁺ nanophosphors”,
	J. Alloys Compd. 509, 2076-2080 (2011).

66	T.Hayakawa*, A.Sawa, M.Nogami, S.Niiyama, S.Tanaka,
	“White Light Emission of Organo-Modified Al₂O₃-SiO₂ Sol-Gel Glasses”
	J. Ceram. Proc. Res. 12, s44-s46 (2011).

65	X.T.Zhang, T.Hayakawa*, M.Nogami, Y.Ishikawa,
	“Synthesis and luminescence properties of well-dispersed LaF₃:Eu³⁺ nanocrystals”
	J. Ceram. Proc. Res. 12, s39-s43 (2011).

64	K.Guilherme, T.Hayakawa*, and M.Nogami,
	“Copper reduction and hydroxyl formation by hydrogen process in alumino-silicate glasse”
	J. Phys. Chem. Solids, 72, 151-157 (2011).

63	T.Fujiwara, T.Hayakawa*, M.Nogami, J.R.Duclere, and P.Thomas,
	“Structures and third-order optical nonlinearities of BiO_1.5-WO₃-TeO₂ glasses”
	J. Am. Ceram. Soc. 95,1434-1439 (2011).

62	T.Hayakawa*, M.Koduka, M.Nogami, J.R.Duclere, A.P.Mirgorodsky, and P.Thomas,
	“Metal oxide doping effects on Raman spectra and third-order nonlinear susceptibilities of thallium-tellurite glasses”
	Scr. Mater. 62, 806-809 (2010).

61	T.Hayakawa*, M.Hayakawa, M.Nogami, and P.Thomas,
	“Nonlinear optical properties and glass structure for MO-Nb₂O₅-TeO₂ (M = Zn, Mg, Ca, Sr, Ba) glasses”
	Opt. Mater. 32, 448-455 (2010).

60	X.T.Zhang, T.Hayakawa*, M.Nogami, and Y.Ishikawa,
	“Selective synthesis and luminescence properties of nanocrystalline GdF₃:Eu³⁺ with hexagonal and orthorhombic structures”
	J. Nanomaterials,2010, Article ID 651326 (2010).

59	V.P.Tuyen, T.Hayakawa*, M.Nogami, J.R.Duclere, and P.Thomas,
	“Fluorescence line narrowing spectroscopy of Eu³⁺ in zinc-thallium-tellurite glass”
	J. Solid State Chem, 183, 2714-2719 (2010).

58	M.Soulis, J.-R.Duclere, T.Hayakawa*, V.Couderc, M.Dutreilh-Colas, and P.Thomas,
	“Second harmonic generation induced by optical poling in new TeO₂-Tl₂O-ZnO glasses”
	Mater. Res. Bull. 45, 551-559 (2010).

57	N.V.Long, N.D.Chien, T.Hayakawa*, H.Hirata, G. Lakshminarayana, and M. Nogami,
	“The synthesis and characterization of platinum nanoparticles: a method of controlling the size and morphology”
	Nanotechnology 21, 035605 (2010).

56	M.Nogami, H.Shiiba, G.A.Kleine, M.Nakayama, and T.Hayakawa*,
	“Hydrogen gas permeation through Al₂O₃-SiO₂ glasses containing metal ions”
	J.Am.Ceram.Soc. 93, 3752-3756 (2010).

55	Y.Kishimoto, X.T.Zhang, T.Hayakawa and M.Nogami*,
	“Blue light emission from Eu²⁺ ions in sol-gel-derived Al₂O₃-SiO₂ glasses”
	J. Lumin. 129129, 1055-1059 (2009).

54	X.T.Zhang, T.Hayakawa* and M.Nogami,
	“Photoluminescence properties of LaF₃:Eu³⁺ nanocrystals prepared by using surfactant assist”
	Int. J. Appl. Ceram. Technol., (2009) doi:10.1111/j.1744-7402.2009.02433.x.

53	X.T.Zhang, T.Hayakawa*, and M.Nogami,
	“Size-dependence of LaF₃:Eu³⁺ nanocrystals on Eu³⁺ photoluminescence intensity”
	Mater. Sci. Engin. 1, 012021-1-7 (2009).

52	M.Udovic, P.Thomas, A.Mirgorodsky, O.Masson, T.Merie-Mejean, C.Lasbrugnas, J.C.Champarnaud-Mesjard and T.Hayakawa*
	“Formation domain, characterization of new glass within the Tl₂O-TiO₂-TeO₂ system”
	Mater. Res. Bull. 44, 248-253 (2009).

51	T.Hayakawa*, M.Hayakawa and M.Nogami,
	“Estimation of the fs laser spot temperature inside TeO₂-ZnO-Nb₂O₅ glass by using up-conversion green fluorescence of Er³⁺ ions”
	J. Alloys and Comp. 451,77-80 (2008).

50	K.Tsuchiya, S.Nagayasu, S.Okamoto, T.Hayakawa, T.Hihara, K.Yamamoto, I.Takumi, S.Hara, H.Hasegawa, S.Akasaka and N.Kosikawa,
	“Nonlinear optical properties of gold nanoparticles selectively introduced into the periodic microdomains of block copolymers”
	Opt. Exp. 16, 5362-5371 (2008).

49	S.Matsubara, T.Hayakawa*, K.Tsuchiya, Y.Yang, M.Nogami, S.Okamoto and N.Koshikawa
	“Fabrication of twin-linked gold nanoparticles and their linear/nonlinear optical properties”
	J. Phys. Chem. C 112, 13917-13921 (2008).

48	T.Hayakawa*, M.Hayakawa and M.Nogami,
	“Excitation-emission properties of Er³⁺ ions doped in nonlinear optical TeO₂-ZnO-Nb₂O₅ glass by 800 nm femtosecond laser excitation”
	J. Ceram. Soc. Japan 116, 1092-1095 (2008).

47	T.Hayakawa*, M.Hori, C.Pagnoux, J.F.Baumard, and M.Nogami,
	“Enhanced photocatalytic activities of core-shell Au-titanate nanoparticles”
	Chem. Lett. 36, 128~129 (2007).

46	Y. Sugihara, T.Hayakawa, and M. Nogami,
	“Magnetic properties of EuO-Al₂O₃-SiO₂ glasses with high Eu²⁺ concentration”
	J. Ceram. Soc. Japan 115, 602-604 (2007).

45	M.Nogami, T.Hagiwara, G.Kawamura, El-Sayed Ghaith and T.Hayakawa*,
	“Redox equilibirium of samarium ions doped in Al₂O₃-SiO₂ glasses”
	J. Lumin. 124, 291-296 (2007).

44	V.Gue, H.You, T.Hayakawa, and M.Nogami*,
	“Eu³⁺-fluorescence properties in nano-crystallized SnO₂-SiO₂ glass-ceramics”
	J. Sol-Gel Sci. Tech. 41, 231-236 (2007).

43	Y.Yang, S.Matsubara, L.Xiong, T.Hayakawa*, and M.Nogami,
	“Solvothermal synthesis of multiple shapes of silver nanoparticles and their SERS properties”
	J.Phys.Chem. C, 111, 9095-9104 (2007).

42	T.Hayakawa*, T.Enomoto, and M.Nogami,
	“β-band photoluminescence and Sn-E’ center generation from twofold-coordinated Sn centers in SiO₂ glasses produced via a sol-gel method”
	Jpn. J. Appl. Phys. 45, 5078-5083 (2006).

41	H. You, T.Hayakawa*, and M.Nogami,
	“Optical properties of valence change of samarium ions in a sol-gel Al₂O₃-B₂O₃-SiO₂ glass by femtosecond laser irradiation”
	J. Non-Cryst. Solids 352, 2778-2782 (2006).

40	K.Inoue, K.Fukuda, M.Fuji, S.Hashimoto, T.Hayakawa*, S.Honda, M.Shoyama, and Y.Torii,
	“Fabrication and cathode luminescence of partially MgO-substituted ZnO powders”
	J. Ceram. Soc. Japan 114, 620-623 (2006).

39	G.Kawamura, T.Hayakawa, and M.Nogami*
	“Effect of counter ions on the reduction process of Sm3+ ions in TiO₂-ZrO₂-Al₂O₃-SiO₂ glasses”
	J. Alloys and Comp. 408/412, 845-847 (2006).

38	Gil J.Park, T.Hayakawa, and M.Nogami*
	“Influence of Al³⁺ and Eu³⁺ concentration on PSHB properties of melt-quenched Al₂O₃-SiO₂ glasses”
	J. Alloys and Comp. 408/412, 721-723 (2006).

37	T.Hayakawa*, and M.Nogami,
	“High-efficient Eu³⁺ red emission due to excitation energy transfer from nano-sized SnO₂ crystals”
	Adv. Mater. Res. 11-12, 579-582 (2006).

36	H.You, T.Hayakawa*, and M.Nogami,
	“Spectral hole burning in sol-gel derived Eu³⁺-doped Al₂O₃-B₂O₃-SiO₂ glasses”
	Adv. Mater. Res. 11-12, 201-204 (2006).

35	T.Hayakawa*, and M.Nogami,
	“High luminescence quantum efficiency of Eu³⁺-doped SnO₂-SiO₂ glasses due to excitation energy transfer from nano-sized SnO₂ crystals”
	Sci. Tech. Adv. Mater. 6, 66~70 (2005).

34	Y.Yang, M.Hori, T.Hayakawa, and M.Nogami,
	“Self-assembled 3-dimensional arrays of Au@SiO₂ core-shell nanoparticles for enhanced optical nonlinearities”
	Surf. Sci. 579, 215~224 (2005).

33	Gil J.Park, T.Hayakawa, and M.Nogami,
	“Spectral hole-burning in femtosecond laser-irradiated Eu³⁺-doped aluminosilicate glasses”
	J. Sol-Gel Sci. Technol. 33, 47~50 (2005).

32	M.Nogami, G.Kawamura, Gil J.Park, H.You and T.Hayakawa*,
	“Effect of Al³⁺ and Ti⁴⁺ ions on the laser reduction of Sm³⁺ ion in glass”
	J. Lumin. 114, 178~186 (2005).

31	El-Sayed Ghaith, T.Hayakawa, T.Kasuga, and M.Nogami
	“Apatite formation on CO₂ laser irradiated titanium oxide films”
	Mater. Lett. 60, 194-197 (2005).

30	T.Hayakawa*, Y.Usui, S.Bharathi, and M.Nogami,
	“Second harmonic generation from coupled surface plasmon resonances in self-assembling gold nanoparticles monolayer coated with an aminosilane”
	Adv. Mater. 16, 1408~1412 (2004).

29	T.Hayakawa, K.Furuhashi, and M.Nogami,
	“Local field enhancement influenced on Eu3+ fluorescence in the vicinity of Au nanoparticles in sol-gel derived B₂O₃-SiO₂ glass”
	J. Ceram. Soc. Japan Suppl. 112, S256~S260 (2004).

28	Gil J.Park, T.Hayakawa, and M.Nogami*,
	“Spectral hole-burning and fluorescence in femtosecond laser induced Sm²⁺-doped glasses”
	J. Lumin. 106, 103~108 (2004).

27	M.Hori, Y.Usui, T.Hayakawa, and M.Nogami,
	“Self-assembling of gold nanoparticles coated with silica layer”
	J. Ceram. Soc. Japan Suppl. 112, S214~S216 (2004).

26	T.Hayakawa*, K.Furuhashi, and M.Nogami,
	“Enhancement of ⁵D₀-⁷F₀ emission of Eu³⁺ ions in the vicinity of polymer-protected Au nanoparticles in sol-gel derived B₂O₃-SiO₂ glass”
	J. Phys. Chem. B 108, 11301~11307 (2004).

25	H.You, T.Hayakawa*, and M.Nogami,
	“Upconversion luminescence of Al₂O₃-SiO₂:Ce³⁺ glass by femtosecond laser irradiation”
	Appl. Phys. Lett. 85, 3432~3434 (2004).

24	T.Hayakawa*, A.Hiramitsu, and M.Nogami,
	“White light emission from radical carbonyl-terminations in Al₂O₃-SiO₂ porous glasses with high quantum efficiencies”
	Appl. Phys. Lett. 82, 2975~2977 (2003).

23	Gil J.Park, T.Hayakawa, and M.Nogami*,
	“Formation of Sm²⁺ ions in femtosecond laser excited Al₂O₃-SiO₂ glasses”
	J. Phys.:Condens.Matter. 15, 1259~1265 (2003).

22	M.Nogami, and T.Hayakawa*,
	“Optical nonlinearity of glasses containing nanoparticle CdS and SnO₂:Eu³⁺”
	Int. J. Mater. Prod. Technol. 18, 283~295 (2003).

21	M.Nogami, and T.Hayakawa*,
	“Room temperature persistent spectral hole-burning in sol-gel-derived glasses doped with Eu³⁺ ions”
	J. Sol Gel Sci. Techol. 26, 1001~1004 (2003).

20	T.Hayakawa*, M.Nogami, N.Nishi, and N.Sawanobori,
	“Faraday rotation effect of highly Tb₂O₃/Dy₂O₃-concetrated B₂O₃-Ga₂O₃-SiO₂-P₂O₅ glasses”
	Chem. Mater. 14, 3220~3222 (2002).

19	T.Hayakawa*, T.Enomoto, and M.Nogami,
	“Nanocrystalline SnO₂ particles and twofold-coordinated Sn defect centers in sol-gel derived SnO₂-SiO₂ glasses”
	J. Mater. Res. 17, 1305~1311 (2002).

18	T.Hayakawa*, D.Imaizumi, and M.Nogami
	“Manganese-doping effect on magneto-optical properties of terbium borate glass”
	J. Ceram. Soc. Japan 110, 970~974 (2002).

17	D.Imaizumi, T.Hayakawa*, and M.Nogami
	“Faraday rotation effects of Mn²⁺-modified Tb₂O₃-B₂O₃ glass in pulsed magnetic field”
	J. Lightwave Tech. 20, 740~744 (2002).

16	S.Tamil Selvan, T.Hayakawa*, M.Nogami, Y.Kobayashi, L.M.Liz-Marzan, T.Hamanaka, and A.Nakamura
	“Sol-gel derived gold nanoclusters in silica glass possessing large optical nonlinearities”
	J. Phys. Chem. B 106, 10157~10162 (2002).

15	M.Nogami, T.Ishikawa, and T.Hayakawa*
	“Defect centers and room temperature persistent spectral hole burning in X-ray irradiated Eu³⁺-doped glass”
	J. Lumin. 96, 163~169 (2002).

14	M.Nogami, T.Enomoto, and T.Hayakawa*
	“Enhanced fluorescence of Eu³⁺ induced by energy transfer from nanosized SnO₂ crystals in glass”
	J. Lumin. 97, 147~152 (2002).

13	M.Nogami, T.Eto, K Suzuki, and T.Hayakawa*
	“Redox equilibrium and spectral hole burning in Sm²⁺-doped Al₂O₃-SiO₂ glasses”
	J. Mater. Res. 17, 2053~2058 (2002).

12	T.Hayakawa*, H.Ooishi, and M.Nogami
	“Optical bistablility of stimulated emission lines in Sm³⁺-doped glass microsphere”
	Opt. Lett. 26, 84~86 (2001).

11	T.Hayakawa*, and M.Nogami
	“Energy migration of the local excitation at the Eu³⁺ site in a Eu-O chemical clustering in sol-gel derived SiO2:Eu³⁺ glass”
	J. Appl. Phys. 90, 2200~2205 (2001).

10	S.Tamil Selvan, T.Hayakawa*, and M.Nogami
	“Enhanced fluorescence from Eu³⁺-doped silica gels by adsorbed CdS nanoparticles”
	J. Non-Cryst. Solids 291, 137~141 (2001).

9	T.Hayakawa*, and M.Nogami
	“Dynamical Faraday rotation effects of sol-gel derived Al₂O₃-SiO₂ glass containing Eu2+ ions”
	Solid State Commun. 116, 77~82 (2000).

8	T.Hayakawa*, D.Imaizumi, and M.Nogami
	“Newly designed organic/inorganic film for optical second-harmonic generation”
	J. Mater. Res. 15, 530~535 (2000).

7	T.Hayakawa*, S.Tamil Selvan, and M.Nogami
	“Influence of adsorbed CdS nanoparticles on ⁵D₀→⁷F_J emissions in Eu³⁺-doped silica gel”
	J. Lumin. 87-89, 532~534 (2000).

6	T.Hayakawa*, S.Tamil Selvan, and M.Nogami
	“Energy Transfer between Eu³⁺ ion and CdS quantum dot in sol-gel derived CdS/SiO₂:Eu³⁺ gel”
	J. Sol Gel Sci. Technol. 19, 779~783 (2000).

5	D.Imaizumi, T.Hayakawa*, T.Kasuga and M.Nogami
	“Optical second harmonic generation and relaxation dynamics of aligned azo-dyes in sol-gel derived organic-inorganic film”
	J. Sol Gel Sci. Technol. 19, 383~386 (2000).

4	M.Nogami, T.Nagakura, T.Hayakawa*, and T.Kasuga
	“Prospect of sol-gel process for spectral hole-burning glasses”
	J. Sol Gel Sci. Technol. 19, 253~256 (2000).

3	M.Nogami, T.Nagakura, and T.Hayakawa*
	“Site-dependent fluorescence and hole-burning spectra of Eu³⁺-doped Al₂O₃-SiO₂ glasses”
	J. Lumin. 86, 117~123 (2000).

2	M.Nogami, T.Ishikawa, T.Hayakawa*, and T.Kasuga
	“Spectral hole burning in sol-gel-derived Eu³⁺-doped film”
	J. Mater. Res. 15, 1190~1194 (2000).

1	H.Matsushita, R.Nagao, M.Nogami, T.Kasuga, and T.Hayakawa*
	“Hydrogen gas sensing of high electrical conducting P₂O₅-SiO₂ glasses prepared by sol-gel process”
	J. Sol Gel Sci. Technol. 19, 559~562 (2000).

5	T.Hayakawa*, M.Uchida, T.Suhara, J-R.Duclere and P.Thomas
	“Optical Sensing of Femtosecond Laser Spot Temperature Using Er³⁺ Up-Conversion Photoluminescence for TeO₂-based Glass”
	in “Rare-Earth: New Researchess” ed. by Zhaosen Liu Nova-Publisher, ISBN: 978-1-62618-996-6 (2013)./ eBook ISBN: 978-1-62808-014-8 (2013).

4	T.Hayakawa*, M.Uchida, T.Suhara, J-R.Duclere and P.Thomas
	“Tm³⁺ Blue Up-conversion Photoluminescence Properties of Tm³⁺/Yb³⁺ co-doped TeO₂-TlO_0.5-ZnO Glasses”
	International Conference on Spectroscopy & Applications , ISBN: 978-604-913-163-9

3	T.Hayakawa*, S.Hayashi, S.Miyazawa, T.Ohashi, K.Watanabe,
	“C-axis orientation and optical transmission properties of translucent polycrystalline alumina ceramics”
	Light Sources 2012, pp.131-132, ed. by T.Devonshire and G.Zissis, FAST-LS (ISBN 978-0-9555445-4-5).

2	野上正行・早川知克（分担執筆）
	“「ゾル－ゲル法による光機能ナノガラス」第３編第８章pp.246-255”
	“新材料・新素材シリーズ～先端ガラスの産業応用と新しい加工（監修：平尾一之, シーエムシー出版”, (2010).

1	T.Hayakawa, and M.Nogami （分担執筆）
	“Electronic 4f-5d structure and persistent spectral hole burning of divalent Sm ions in sol-gel derived Al₂O₃-SiO₂ glasses”
	IPAP Books 2, K.Tada, T.Suhara, K.Kikuchi, Y.Kokubun, K.Utaka, M.Asada, F.Koyama and T.Arakawa編, “Photonics Based on Wavelength Integration and Manipulation”, 193~198 (2005).

11	早川知克, 岩本雄二
	「国際共同研究を通じたセラミックス材料科学分野の教育・研究機能強化―フランス・ＥＮＳＣＩ／リモージュ大学との連携活動」
	セラミックスデータブック 2016 , in press (2016).

10	早川知克
	「仏CNRS-SPCTS研究所訪問（フランスにおける高等教育とガラス研究）」
	New Glass 31(2), (serial No.118) 27-31 (2016).

9	早川知克,
	「狭帯化蛍光線（ＦＬＮ）分析法を用いた希土類添加ガラス及びセラミックス蛍光体の評価」
	セラミックスデータブック 2013 Vol.41, No.95, 90-94 (2013).

8	早川知克,
	「透光性多結晶アルミナの光透過特性と粒界屈折率差」
	セラミックスデータブック 2012 Vol.40, No.94, 81-84 (2012).

7	早川知克
	「新規M_XO_Y-Tl₂O-TeO₂系テルライトガラスの非線形屈折率特性および非線形発光特性」
	豊田研究報告No.63, 213~218 (2010).

6	野上正行, 早川知克
	「ユウロピウム（Eu）ドープガラスの発光特性」
	マテリアル・インテグレーション第23巻第01号, 27~33 (2010).

5	早川知克
	「TeO₂-Nb₂O₅-MO(M=Zn, Mg, Ca, Sr, Ba)ガラスのラマンスペクトルと三次非線形光学Z-scan特性」
	豊田研究報告No.62, 243~248 (2009).

4	早川知克, 朴吉在, 野上正行
	「Sm添加アルミノシリケートガラスの点欠陥と光ホールバーニング」
	応用物理　第75巻第7号, 887~891 (2006).

3	野上正行, 早川知克
	「SnO₂-SiO₂:Eu³⁺透明ナノ結晶化ガラスの高効率赤色発光」
	New Glass　21(2), 9~10 (2006)

2	野上正行, 早川知克
	「ナノガラス技術により得られたSnO₂-SiO₂:Eu³⁺ガラスの高効率Eu³⁺発光」
	New Glass 20(4), 45~50 (2005)

1	鎌田憲彦, 早川知克, 山田興治
	「希土類添加ガラスの発光と共鳴エネルギー移動」
	応用物理　第65巻第1号, 70~73 (1996)