Author Page for Akira Yoshikawa

β-Ga2O3 Crystal Growth with Cold Container Crucibles: Large-Scale Oxide Crystal Growth from Cold Crucible Method

Number of pages: 16 Posted: 01 Oct 2025

Masanori Kitahara, Taketoshi Tomida, Vladimir Kochurikhin, Gushchina Liudmila, Kei Kamada, Yasuhiro Shoji, Koichi Kakimoto and Akira Yoshikawa

affiliation not provided to SSRN, affiliation not provided to SSRN, Tohoku University, affiliation not provided to SSRN, Tohoku University - Institute for Materials Research, affiliation not provided to SSRN, Tohoku University and Tohoku University

Downloads 80 (837,727)

Abstract:

2.

Heat and Mass Transfer in Β-Ga2o3 Crystal Grown Through a Skull Melting Method

Number of pages: 17 Posted: 14 Sep 2023

Koichi Kakimoto, Isao Takahashi, Taketoshi Tomida, Vladimir Kochurikhin, Kei Kamada, Satoshi Nakano and Akira Yoshikawa

affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Tohoku University, Tohoku University - Institute for Materials Research, Kyushu University and Tohoku University

Downloads 70 (891,180)

Citation 3

Abstract:

3.

Effects of Crystal and Melt Transparency on Twisting of Β-Ga2o3 Crystals Grown by the Czochralski Method

Number of pages: 14 Posted: 03 Jan 2025

Koichi Kakimoto, Taketoshi Tomida, Vladimir Kochurikhin, Kei Kamada, Satoshi Nakano and Akira Yoshikawa

affiliation not provided to SSRN, affiliation not provided to SSRN, Tohoku University, Tohoku University - Institute for Materials Research, Kyushu University and Tohoku University

Downloads 48 (1,097,529)

Abstract:

4.

Effects of Chemical Composition Control for Licaalf6 and Lisralf6 Neutron Scintillator Single Crystals

Number of pages: 21 Posted: 06 Sep 2022

Yuui Yokota, Takahiko Horiai and Akira Yoshikawa

Tohoku University, Tohoku University and Tohoku University

Downloads 45 (1,121,190)

Abstract:

5.

From Fundamental Insight to Property Control in Tb2yxal5o12:Ce (X= 1 and 0.1) Garnets Through Nonstoichiometric Engineering: Impacts on Structure, Defects, Luminescence, Photoconversion and Scintillation

Number of pages: 40 Posted: 26 Apr 2024

Karol Bartosiewicz, Justyna Zeler, Marcin E. Witkowski, Benedetta Albini, Masao Yoshino, Takahiko Horiai, Damian Szymański, Robert Tomala, M. Buryi, Shunsuke Kurosawa, Kei Kamada, Pietro Galinetto, Winicjusz Drozdowski, Eugeniusz Zych and Akira Yoshikawa

Kazimierz Wielki University in Bydgoszcz, affiliation not provided to SSRN, Nicolaus Copernicus University, University of Pavia, Tohoku University, Tohoku University, affiliation not provided to SSRN, Polish Academy of Sciences, Czech Academy of Sciences - Institute of Physics, Tohoku University, affiliation not provided to SSRN, University of Pavia, Nicolaus Copernicus University, affiliation not provided to SSRN and Tohoku University

Downloads 44 (1,157,785)

Abstract:

6.

Design and Synthesis of Functional Materials with Phase‑Separated Crystals: Leveraging Microstructures for Function Creation

Number of pages: 13 Posted: 03 Oct 2025

Akira Yoshikawa, Kei Kamada, Masao Yoshino, Tetsuo Kudo, Yoshiyuki Usuki, Rikito Murakami, Yuui Yokota and M. Nikl

Tohoku University, Tohoku University - Institute for Materials Research, Tohoku University, Tohoku University, Tohoku University, Tohoku University, Tohoku University and affiliation not provided to SSRN

Downloads 40 (1,209,354)

Abstract:

7.

High-Toughness/Resistivity Ruthenium-Based Refractory Alloys

Number of pages: 29 Posted: 23 Feb 2023

Rikito Murakami, Kei Kamada, Kenichi Umetsu, Takashi Yoshioka, Katsunari Oikawa, Junji Kido and Akira Yoshikawa

Tohoku University, Tohoku University - Institute for Materials Research, affiliation not provided to SSRN, affiliation not provided to SSRN, Tohoku University, Yamagata University and Tohoku University

Downloads 37 (1,222,651)

Abstract:

8.

Study of Twisting of Β-Ga2o3 Crystals Based on Optical Absorption and Thermal Conductivity Anisotropy in the Crystals Grown by the Czochralski Method

Number of pages: 20 Posted: 27 Oct 2023

Koichi Kakimoto, Isao Takahashi, Taketoshi Tomida, Vladimir Kochurikhin, Kei Kamada, Satoshi Nakano and Akira Yoshikawa

affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Tohoku University, Tohoku University - Institute for Materials Research, Kyushu University and Tohoku University

Downloads 36 (1,236,159)

Abstract:

9.

Scintillation Properties of Cs4mg3f10 Crystal Grown by Micro-Pulling-Down Method

Number of pages: 9 Posted: 03 Oct 2023

Vojtech Vanecek, Jaroslav Pejchal, Robert Král, Romana Kučerková, Takahiko Horiai, Akihiro Yamaji, Yuui Yokota, Akira Yoshikawa and M. Nikl

Academy of Sciences of the Czech Republic - Institute of Physics, University Hospital Hradec Kralove, affiliation not provided to SSRN, Czech Academy of Sciences - Institute of Physics, Tohoku University, Tohoku University, Tohoku University, Tohoku University and affiliation not provided to SSRN

Downloads 35 (1,263,436)

Citation 1

Abstract:

10.

Optical and Scintillation Properties of Yb-Doped La2hf2o7 Crystal Grown by Core Heating Method for Fiber Reading Remote-Dosimetry System

Number of pages: 12 Posted: 10 Feb 2023

Satoshi Ishizawa, Shunsuke Kurosawa, Yutaro Kurashima, Shohei Kodama, Yuki Morishita, Akihiro Yamaji, Maki Ohno, Shiori Ishikawa, Masateru Hayashi, Makoto Sasano, Taisuke Makita, Chihaya Fujiwara, Vladimir Kochurikhin, Akira Yoshikawa, Takushi Takata and Hiroki Tanaka

Tohoku University, Tohoku University, Tohoku University, Saitama University, Japan Atomic Energy Agency, Tohoku University, Tohoku University, Tohoku University, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Tohoku University, Tohoku University, Tohoku University, Kyoto University - Particle Radiation Oncology Research Center and Kyoto University - Particle Radiation Oncology Research Center

Downloads 30 (1,318,317)

Citation 1

Abstract:

11.

Flux Growth of Cs1-Xrbxbf3 (B = Ca, Sr) Crystals by the Micro-Pulling-Down Method

Number of pages: 12 Posted: 13 Jul 2024

Vojtech Vanecek, Takahiko Horiai, Masao Yoshino, Akihiro Yamaji, Akira Yoshikawa and M. Nikl

Academy of Sciences of the Czech Republic - Institute of Physics, Tohoku University, Tohoku University, Tohoku University, Tohoku University and affiliation not provided to SSRN

Downloads 29 (1,332,057)

Abstract:

12.

Engineering Atomic Size Mismatch in Pr3+, La3+ Codoped Lu3al5o12 Garnet Single Crystals for Tailored Structure and Functional Properties

Number of pages: 38 Posted: 27 Feb 2024

Karol Bartosiewicz, Benedetta Albini, Damian Szymański, Paweł Socha, Takahiko Horiai, Masao Yoshino, Akihiro Yamaji, Shunsuke Kurosawa, Romana Kučerková, Pietro Galinetto and Akira Yoshikawa

Kazimierz Wielki University in Bydgoszcz, University of Pavia, affiliation not provided to SSRN, affiliation not provided to SSRN, Tohoku University, Tohoku University, Tohoku University, Tohoku University, Czech Academy of Sciences - Institute of Physics, University of Pavia and Tohoku University

Downloads 28 (1,359,097)

Citation 1

Abstract:

13.

Relationship between Ce3+ 5d1 Level, Conduction-Band Bottom, and Shallow Electron Trap Level in Gd3ga5o12:Ce and Gd3al1ga4o12:Ce Crystals Studied Via Pump-Probe Absorption Spectroscopy

Number of pages: 24 Posted: 17 Oct 2024

Mamoru Kitaura, Heishun Zen, Shinta Watanabe, Hirokazu Masai, Kei Kamada, Kyong-Jin Kim, Akira Yoshikawa and Jumpei Ueda

affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Tohoku University - Institute for Materials Research, affiliation not provided to SSRN, Tohoku University and Japan Advanced Institute of Science and Technology

Downloads 27 (1,372,601)

Abstract:

14.

Ce3+ Ion-Induced Distortion in a Perovskite-Structured Kmgf3 Single Crystal

Number of pages: 11 Posted: 14 Nov 2023

Mayrene A. Uy, Angelo P. Rillera, Keito Shinohara, Melvin John F. Empizo, K. Yamanoi, Akira Yoshikawa, Nobuhiko Sarukura and Hitoshi Abe

affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Osaka University, Tohoku University, affiliation not provided to SSRN and affiliation not provided to SSRN

Downloads 27 (1,359,097)

Abstract:

15.

Crystal Growth and Evaluating Luminescent Properties of Eu-Doped (Y, Lu, Sc)2o3 for Optical Thermometry

Number of pages: 36 Posted: 18 Dec 2024

Yuka Abe, Takahiko Horiai, Yuui Yokota, Masao Yoshino, Jaroslav Pejchal, Romana Kučerková, Rikito Murakami, Takashi Hanada, Akihiro Yamaji, Hiroki Sato, Yuji Ohashi, Shunsuke Kurosawa, Kei Kamada, M. Nikl and Akira Yoshikawa

affiliation not provided to SSRN, Tohoku University, Tohoku University, Tohoku University, University Hospital Hradec Kralove, Czech Academy of Sciences - Institute of Physics, Tohoku University, affiliation not provided to SSRN, Tohoku University, affiliation not provided to SSRN, Tohoku University, Tohoku University, Tohoku University - Institute for Materials Research, affiliation not provided to SSRN and Tohoku University

Downloads 22 (1,436,435)

Abstract:

16.

Continuous Crystal Growth and Homogeneity of 2-Inch Ca3ta(Ga,Al)3si2o14 Bulk Single Crystals

Number of pages: 12 Posted: 14 Sep 2024

Yuui Yokota, Yuji Ohashi, Yasuhiro Shoji and Akira Yoshikawa

Tohoku University, Tohoku University, affiliation not provided to SSRN and Tohoku University

Downloads 20 (1,448,301)

Abstract:

17.

Relationship of Single Crystal Growth and Luminescence Properties of Cr-Doped Gadolinium Gallium Garnet Crystals for Radiation Dose-Rate Monitoring Systems

Number of pages: 21 Posted: 14 Nov 2023

Daisuke Matsukura, Shunsuke Kurosawa, Akihiro Yamaji, Yuji Ohashi, Yuui Yokota, Kei Kamada, Hiroki Sato, Masao Yoshino, Takashi Hanada, Rikito Murakami, Takahiko Horiai and Akira Yoshikawa

Tohoku University, Tohoku University, Tohoku University, Tohoku University, Tohoku University, Tohoku University - Institute for Materials Research, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Tohoku University, Tohoku University and Tohoku University

Downloads 18 (1,470,786)

Abstract:

18.

Effects of Chemical Composition Control of Colquiriite-Type Neutron Scintillator Single Crystals

Number of pages: 20 Posted: 13 Mar 2023

Yuui Yokota, Takahiko Horiai and Akira Yoshikawa

Tohoku University, Tohoku University and Tohoku University

Downloads 16 (1,491,251)

Akira Yoshikawa

Tohoku University

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Scholarly Papers (18)

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