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Takumi Fujiwara
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Journal Articles

Deriving a fundamental equation for macroscopic stress in chemically strengthened glass: A thermodynamic model

Open Access
Nobuaki Terakado, Kota Matsumoto, Daichi Murai, Shingo Ebukuro, Yoshihiro Takahashi, Kazuro Kizaki, Takumi Fujiwara, Shuji Orihara, Yoshio Orihara
Journal: Journal of Applied Physics
J. Appl. Phys. 135, 245102 (2024)
https://doi.org/10.1063/5.0204149
Published: June 2024
View article titled, Deriving a fundamental equation for macroscopic stress in chemically strengthened glass: A thermodynamic model
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Journal Articles

Attempt to fabricate a high thermal conductivity, transparent oxide glass by dispersing MgO crystals and refractive index matching

Open Access
Nobuaki Terakado, Ryusei Kozawa, Toshikazu Yoshimine, Yoshihiro Takahashi, Takumi Fujiwara
Journal: AIP Advances
AIP Advances 8, 115012 (2018)
https://doi.org/10.1063/1.5054339
Published: November 2018
View article titled, Attempt to fabricate a high thermal conductivity, transparent oxide glass by dispersing MgO crystals and refractive index matching
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Journal Articles

Variation in Pockels constants of silicate glass-ceramics prepared by perfect surface crystallization

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Kazuya Takano, Yoshihiro Takahashi, Takamichi Miyazaki, Nobuaki Terakado, Takumi Fujiwara
Journal: Applied Physics Letters
Appl. Phys. Lett. 112, 021904 (2018)
https://doi.org/10.1063/1.5017671
Published: January 2018
View article titled, Variation in Pockels constants of silicate glass-ceramics prepared by perfect surface crystallization
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Includes: Supplementary data
Journal Articles

Line patterning of anisotropic spin chains by polarized laser for application in micro-thermal management

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Nobuaki Terakado, Ryosuke Takahashi, Yoshihiro Takahashi, Takumi Fujiwara
Journal: Applied Physics Letters
Appl. Phys. Lett. 110, 191902 (2017)
https://doi.org/10.1063/1.4983369
Published: May 2017
View article titled, Line patterning of anisotropic spin chains by polarized laser for application in micro-thermal management
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Journal Articles

Affects of supercooled liquid state on the properties of the crystallized phase: Microscopic and spectroscopic observations in ZnO-crystallized glass-ceramics

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Yoshihiro Takahashi, Mikio Kinoshita, Takamichi Miyazaki, Minoru Osada, Nobuaki Terakado, Takumi Fujiwara
Journal: Applied Physics Letters
Appl. Phys. Lett. 107, 061902 (2015)
https://doi.org/10.1063/1.4928538
Published: August 2015
View article titled, Affects of supercooled liquid state on the properties of the crystallized phase: Microscopic and spectroscopic observations in ZnO-crystallized glass-ceramics
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Journal Articles

Fabrication of glass-ceramics containing spin-chain compound SrCuO2 and its high thermal conductivity

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Nobuaki Terakado, Kouki Watanabe, Takayuki Kawamata, Yuudai Yokochi, Yoshihiro Takahashi, Yoji Koike, Takumi Fujiwara
Journal: Applied Physics Letters
Appl. Phys. Lett. 106, 141902 (2015)
https://doi.org/10.1063/1.4917035
Published: April 2015
View article titled, Fabrication of glass-ceramics containing spin-chain compound SrCuO2 and its high thermal conductivity
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Journal Articles

Large enhancement of photocatalytic activity by chemical etching of TiO2 crystallized glass

Open Access
Kazuki Yoshida, Yoshihiro Takahashi, Rie Ihara, Nobuaki Terakado, Takumi Fujiwara, Hideki Kato, Masato Kakihana
Journal: APL Materials
APL Mater. 2, 106103 (2014)
https://doi.org/10.1063/1.4897961
Published: October 2014
View article titled, Large enhancement of photocatalytic activity by chemical etching of TiO2 crystallized glass
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Journal Articles

Multiferroic BiFeO3 glass-ceramics: Phase formation and physical property

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Yoshihiro Takahashi, Kousuke Meguro, Hiroshi Naganuma, Nobuaki Terakado, Takumi Fujiwara
Journal: Applied Physics Letters
Appl. Phys. Lett. 104, 221901 (2014)
https://doi.org/10.1063/1.4881138
Published: June 2014
View article titled, Multiferroic BiFeO3 glass-ceramics: Phase formation and physical property
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Journal Articles

Ultra-low propagation losses in fresnoite-type precipitated crystallized glasses

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Yoshiki Yamazaki, Yoshihiro Takahashi, Rie Ihara, Takumi Fujiwara
Journal: Applied Physics Letters
Appl. Phys. Lett. 104, 031901 (2014)
https://doi.org/10.1063/1.4862888
Published: January 2014
View article titled, Ultra-low propagation losses in fresnoite-type precipitated crystallized glasses
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Journal Articles

Crystal domain growth driven by nanometric phase separation in perfect surface crystallization

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Yoshihiro Takahashi, Kazuki Yamaoka, Yoshiki Yamazaki, Takamichi Miyazaki, Takumi Fujiwara
Journal: Applied Physics Letters
Appl. Phys. Lett. 103, 071909 (2013)
https://doi.org/10.1063/1.4818674
Published: August 2013
View article titled, Crystal domain growth driven by nanometric phase separation in perfect surface crystallization
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Journal Articles

Successive phase transformation in stoichiometric glassy Li2Ge4O9: Isothermal and nonisothermal study

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Yoshihiro Takahashi, Jun Kunitomo, Takamichi Miyazaki, Minoru Osada, Takumi Fujiwara
Journal: Journal of Applied Physics
J. Appl. Phys. 114, 033512 (2013)
https://doi.org/10.1063/1.4813783
Published: July 2013
View article titled, Successive phase transformation in stoichiometric glassy Li2Ge4O9: Isothermal and nonisothermal study
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Journal Articles

Perfect surface crystallization and parasitic structures in nonstoichiometric glass-ceramics: Micro-/nanoscopic aspects

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Yoshihiro Takahashi, Yoshiki Yamazaki, Rie Ihara, Takumi Fujiwara
Journal: Applied Physics Letters
Appl. Phys. Lett. 102, 191903 (2013)
https://doi.org/10.1063/1.4805028
Published: May 2013
View article titled, Perfect surface crystallization and parasitic structures in nonstoichiometric glass-ceramics: Micro-/nanoscopic aspects
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Journal Articles

Precipitation of Pt nanocrystallites from BaO-TiO2-GeO2 remelted glass

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Hirokazu Masai, Katsumi Hamaguchi, Yoshiyuki Suzuki, Kenichiro Iwasaki, Rie Ihara, Yoshihiro Takahashi, Takumi Fujiwara
Journal: Journal of Applied Physics
J. Appl. Phys. 111, 123513 (2012)
https://doi.org/10.1063/1.4729488
Published: June 2012
View article titled, Precipitation of Pt nanocrystallites from BaO-TiO2-GeO2 remelted glass
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Journal Articles

Nano-sized Ba2NaNb5O15–NaNbO3 co-crystallized glass-ceramics in phosphoniobate system

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Yoshihiro Takahashi, Nobuhiro Fujie, Takumi Fujiwara
Journal: Applied Physics Letters
Appl. Phys. Lett. 100, 201907 (2012)
https://doi.org/10.1063/1.4719034
Published: May 2012
View article titled, Nano-sized Ba2NaNb5O15–NaNbO3 co-crystallized glass-ceramics in phosphoniobate system
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Journal Articles

Soft-phonon mode observation in Li2Ge4O9 phase above room temperature

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Yoshihiro Takahashi, Jun Kunitomo, Kensaku Nakamura, Minoru Osada, Takumi Fujiwara
Journal: Applied Physics Letters
Appl. Phys. Lett. 100, 091902 (2012)
https://doi.org/10.1063/1.3688603
Published: February 2012
View article titled, Soft-phonon mode observation in Li2Ge4O9 phase above room temperature
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Journal Articles

Low-frequency inelastic light scattering of zincogermanate glass in supercooledliquid regime

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Yoshihiro Takahashi, Minoru Osada, Masataka Ando, Rie Ihara, Takumi Fujiwara
Journal: Journal of Applied Physics
J. Appl. Phys. 109, 126105 (2011)
https://doi.org/10.1063/1.3602085
Published: June 2011
View article titled, Low-frequency inelastic light scattering of zincogermanate glass in supercooledliquid regime
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Journal Articles

Formation of Zn defects in willemite-type Zn 2 GeO 4 during supercooled liquid-crystal phase transition

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Yoshihiro Takahashi, Masataka Ando, Rie Ihara, Takumi Fujiwara
Journal: Applied Physics Letters
Appl. Phys. Lett. 98, 221907 (2011)
https://doi.org/10.1063/1.3597300
Published: June 2011
View article titled, Formation of Zn defects in willemite-type Zn 2 GeO 4 during supercooled liquid-crystal phase transition
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Journal Articles

Crystallization of tungstenbronze-type Ba 2 NaNb 5 O 15 in high- Nb 2 O 5 -content glass: An inelastic light scattering study

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Yoshihiro Takahashi, Nobuhiro Fujie, Minoru Osada, Hirokazu Masai, Rie Ihara, Takumi Fujiwara
Journal: Journal of Applied Physics
J. Appl. Phys. 108, 103519 (2010)
https://doi.org/10.1063/1.3512909
Published: November 2010
View article titled, Crystallization of tungstenbronze-type Ba 2 NaNb 5 O 15 in high- Nb 2 O 5 -content glass: An inelastic light scattering study
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Journal Articles

Transmission electron microscopy and in situ Raman studies of glassy sanbornite: An insight into nucleation trend and its relation to structural variation

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Yoshihiro Takahashi, Minoru Osada, Hirokazu Masai, Takumi Fujiwara
Journal: Journal of Applied Physics
J. Appl. Phys. 108, 063507 (2010)
https://doi.org/10.1063/1.3487473
Published: September 2010
View article titled, Transmission electron microscopy and in situ Raman studies of glassy sanbornite: An insight into nucleation trend and its relation to structural variation
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Journal Articles

Defect activation in willemite-type Zn 2 GeO 4 by nanocrystallization

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Yoshihiro Takahashi, Masataka Ando, Kenichiro Iwasaki, Hirokazu Masai, Takumi Fujiwara
Journal: Applied Physics Letters
Appl. Phys. Lett. 97, 071906 (2010)
https://doi.org/10.1063/1.3481081
Published: August 2010
View article titled, Defect activation in willemite-type Zn 2 GeO 4 by nanocrystallization
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