Papers - OHTSUKA, Masahiro

Dopant site occupancies and iron valence states in SrZn_xFe_18−xO₂₇ W-type hexaferrites using site-selective X-ray/electron spectroscopy Reviewed

Masahiro Ohtsuka, Yoshihiro Anan, Shunsuke Muto

Journal of Alloys and Compounds   Vol. 1005   page： 176028   2024.11

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Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jallcom.2024.176028

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Automating ALCHEMI at the nano-scale using software compatible with PC-controlled transmission electron microscopy Reviewed International journal

  Vol. 55   page： 551 - 557   2022.6

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1107/S1600576722003818

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ReciPro: free and open-source multipurpose crystallographic software integrating a crystal model database and viewer, diffraction and microscopy simulators, and diffraction data analysis tools Reviewed International journal

Seto Yusuke, Ohtsuka Masahiro

JOURNAL OF APPLIED CRYSTALLOGRAPHY   Vol. 55   page： 397 - 410   2022.4

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DOI： 10.1107/S1600576722000139

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2D-HARECXS analysis of dopant and oxygen vacancy sites in Al-doped yttrium titanate Reviewed International journal

M. Ohtsuka, K. Oda, M. Tanaka, S. Kitaoka, and S. Muto

Journal of the American Ceramic Society   Vol. 104 ( 7 ) page： 3760 - 3769   2021.7

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DOI： 10.1111/jace.17764

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Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis Reviewed International journal

Masahiro Ohtsuka, Shunsuke Muto

Journal of Visualized Experiments   Vol. e62015 ( 171 )   2021.5

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DOI： 10.3791/62015

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Cation mixing in LiNi_0.8Co_0.15Al_0.05O₂ positive electrode material studied using high angular resolution electron channeling X-ray spectroscopy Reviewed International journal

Yamamoto Yu, Ohtsuka Masahiro, Azuma Yosuke, Takahashi Teruo, Muto Shunsuke

JOURNAL OF POWER SOURCES   Vol. 401   page： 263 - 270   2018.10

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jpowsour.2018.08.100

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High-precision quantitative atomic-site-analysis of functional dopants in crystalline materials by electron-channelling-enhanced microanalysis Invited Reviewed International journal

Muto Shunsuke, Ohtsuka Masahiro

PROGRESS IN CRYSTAL GROWTH AND CHARACTERIZATION OF MATERIALS   Vol. 63 ( 2 ) page： 40 - 61   2017.6

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DOI： 10.1016/j.pcrysgrow.2017.02.001

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Efficient data sampling scheme to reduce acquisition time in statistical ALCHEMI Reviewed

Ishizuka, A; Ohtsuka, M; Muto, S

MICROSCOPY     2025.2

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1093/jmicro/dfaf004

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Dopant site analysis of heavily Si-doped GaAs using a combination of electron microscopy and synchrotron radiation Reviewed

Saito, G; Ishizuka, A; Ohtsuka, M; Ito, S; Okajima, T; Muto, S

JOURNAL OF APPLIED PHYSICS   Vol. 137 ( 2 )   2025.1

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1063/5.0238327

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Improved dopant fraction variance estimation in statistical ALCHEMI based on correct error propagation rule Reviewed International journal

Ishizuka, A; Ohtsuka, M; Muto, S

MICROSCOPY     2024.11

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1093/jmicro/dfae052

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Cell structure development during cyclic deformation of near-[001] and near-[011] copper single crystals Reviewed

Bohan Wang, Haomeng Shi, Tomotaka Miyazawa, Masahiro Ohtsuka, Shunsuke Muto, Shigeo Arai, Toshiyuki Fujii

Materials Science and Engineering: A   Vol. 916   page： 147357   2024.11

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.msea.2024.147357

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Formation mechanism of dislocation network of cell structure in cyclically deformed near-[111] copper single crystals Reviewed International journal

Wang, BH; Umeda, Y; Miyazawa, T; Ohtsuka, M; Muto, S; Arai, S; Fujii, T

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING   Vol. 879   2023.7

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.msea.2023.145287

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Extension of focal depth by electron quasi-Bessel beam in atomic-resolution scanning transmission electron microscopy Reviewed International journal

Ishida, T; Owaki, T; Ohtsuka, M; Kuwahara, M; Saitoh, K; Kawasaki, T

APPLIED PHYSICS EXPRESS   Vol. 15 ( 11 )   2022.11

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DOI： 10.35848/1882-0786/ac96ce

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A study on the relationship of magnetic moments orientation in L1₀FePt network nanostructured film by electron energy-loss magnetic chiral dichroism using semi-core excitation spectra Reviewed International coauthorship International journal

Makino, H; Rusz, J; Wang, J; Turenne, D; Ohtsuka, M; Takahashi, YK; Dürr, HA; Muto, S

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   Vol. 558   2022.9

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jmmm.2022.169522

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Structural and chemical modifications of oxides and OH generation by space weathering: Electron microscopic/spectroscopic study of hydrogen-ion-irradiated Al₂O₃ Reviewed International journal

Igami Yohei, Muto Shunsuke, Takigawa Aki, Ohtsuka Masahiro, Miyake Akira, Suzuki Kohtaku, Yasuda Keisuke, Tsuchiyama Akira

GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 315   page： 61 - 72   2021.12

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.gca.2021.09.031

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Core-Shell Double Doping of Zn and Ca on β-Ga₂O₃ Photocatalysts for Remarkable Water Splitting Reviewed International journal

A. Yamakata, J. J. M. Vequizo, T. Ogawa, K. Kato, S. Tsuboi, N. Furutani, M. Ohtsuka, S. Muto, A. Kuwabara, Y. Sakata

ACS Catalysis   Vol. 11 ( 4 ) page： 1911 - 1919   2021.2

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1021/acscatal.0c05104

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Formation of ultra-thin Ge_1-xSn_x/Ge_1-x-ySi_xSn_y quantum heterostructures and their electrical properties for realizing resonant tunneling diode Reviewed International journal

Suwito Galih Ramadana, Fukuda Masahiro, Suprayoga Edi, Ohtsuka Masahiro, Hasdeo Eddwi Hesky, Nugraha Ahmad Ridwan Tresna, Sakashita Mitsuo, Shibayama Shigehisa, Nakatsuka Osamu

Applied Physics Letters   Vol. 117 ( 23 )   2020.12

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1063/5.0024905

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Measurement of nanoscale local stress distribution in phase-separated glass using scanning transmission electron microscopy-cathodoluminescence Reviewed International journal

Yamada Taiki, Ohtsuka Masahiro, Takahashi Yoshimasa, Yoshino Haruhiko, Amma Shin-ichi, Muto Shunsuke

MATERIALIA   Vol. 9   2020.3

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.mtla.2019.100578

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電子チャネリング効果を利用した結晶材料分析法の現状 Invited Reviewed

大塚 真弘, 武藤 俊介

まてりあ   Vol. 58 ( 2 ) page： 73 - 76   2019.2

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Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)  

DOI： 10.2320/materia.58.73

Proposal for Measuring Magnetism with Patterned Apertures in a Transmission Electron Microscope Reviewed International coauthorship International journal

Negi Devendra, Spiegelberg Jakob, Muto Shunsuke, Thersleff Thomas, Ohtsuka Masahiro, Schonstrom Linus, Tatsumi Kazuyoshi, Rusz Jan

PHYSICAL REVIEW LETTERS   Vol. 122 ( 3 )   2019.1

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DOI： 10.1103/PhysRevLett.122.037201

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Unmixing hyperspectral data by using signal subspace sampling Reviewed International coauthorship International journal

Jakob Spiegelberg, Shunsuke Muto, Masahiro Ohtsuka, Kristiaan Pelckmans, Ján Rusz

Ultramicroscopy   Vol. 182   page： 205 - 211   2017.11

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.ultramic.2017.07.009

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Localization of magnetic circular dichroic spectra in transmission electron microscopy experiments with atomic plane resolution Reviewed International coauthorship International journal

Ján Rusz, Jakob Spiegelberg, Shunsuke Muto, Thomas Thersleff, Masahiro Ohtsuka, Klaus Leifer, and Peter M. Oppeneer

Physical Review B   Vol. 95 ( 17 ) page： 174412   2017.5

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1103/PhysRevB.95.174412

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Quantitative determination of occupation sites of trace Co substituted for multiple Fe sites in M-type hexagonal ferrite using statistical beam-rocking TEM-EDXS analysis Reviewed

Masahiro Ohtsuka, Shunsuke Muto, Kazuyoshi Tatsumi, Yoshinori Kobayashi, Tsunehiro Kawata

Microscopy   Vol. 65 ( 2 ) page： 127-137   2016.4

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DOI： 10.1093/jmicro/dfv356

Image formation mechanisms of spherical aberration corrected BF STEM imaging methods Reviewed

Yasutoshi Kotaka, Takashi Yamazaki, Masahiro Ohtsuka, Kazuto Watanabe

Ultramicroscopy   Vol. 136   page： 119-126   2014.10

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DOI： 10.1016/j.ultramic.2013.09.005

Bloch wave simulations in the frozen lattice approximation Reviewed

Takashi Yamazaki, Masahiro Ohtsuka, Yasutoshi Kotaka, Kazuto Watanabe

Ultramicroscopy   Vol. 135   page： 16-23   2013.5

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DOI： 10.1016/j.ultramic.2013.05.018

Nonlocality in spherical-aberration-corrected HAADF STEM images Reviewed

Masahiro Ohtsuka, Takashi Yamazaki, Yasutoshi Kotaka, Hironori Fujisawa, Masaru Shimizu, Koichiro Honda, Iwao Hashimoto, Kazuto Watanabe

  Vol. 69   page： 289-296   2013.4

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Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1107/S0108767313005941

Imaging of light and heavy atomic columns by spherical aberration corrected middle-angle bright-field STEM Reviewed

Masahiro Ohtsuka, Takashi Yamazaki, Yasutoshi Kotaka, Iwao Hashimoto, Kazuto Watanabe

Ultramicroscopy   Vol. 120   page： 48-55   2012.9

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DOI： 10.1016/j.ultramic.2012.06.006

Comparison of Interface Characterization between Ag(In,Ga)Se₂ and Cu(In,Ga)Se₂ Solar Cells by High-Angle-Annular Dark-Field Scanning Transmission Electron Microscopy Reviewed

Zhang Xianfeng, Tsuyoshi Kobayashi, Yasuyoshi Kurokawa, Yoshiyuki Tashiro, Masahiro Ohtsuka, Tomoyuki Yamada, Akira Yamada

Japanese Journal of Applied Physics   Vol. 50   page： 126603   2011.11

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1143/JJAP.50.126603

Effect of convergent beam semiangle on image intensity in HAADF STEM images Reviewed

Koji Kuramochi, Takashi Yamazaki, Yasutoshi Kotaka, Masahiro Ohtsuka, Iwao Hashimoto, Kazuto Watanabe

Acta Crystallographica Section A   Vol. 66   page： 10-16   2010

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1107/S0108767309039750

Many-beam dynamical simulation for multilayer structures without a superlattice cell Reviewed

Masahiro Ohtsuka, Takashi Yamazaki, Iwao Hashimoto, Kazauto Watanabe

Acta Crystallographica Section A   Vol. 65   page： 135-140   2009

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DOI： 10.1107/S0108767308043316

Effect of chromatic aberration on atomic-resolved spherical aberration corrected STEM images Reviewed

Koji Kuramochi, Yasutoshi Kotaka, Takashi Yamazaki, Masahiro Ohtsuka, Iwao Hashimoto, Kazuto Watanabe

Ultramicroscopy   Vol. 110   page： 36-42   2009

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.ultramic.2009.09.003

Quantitative and easy estimation of a crystal bending effect using low-order CBED patterns Reviewed

Takashi Yamazaki, Akihiro Kashiwagi, Koji Kuramoshi, Masahiro Ohtsuka, Iwao Hashimoto, Kazuto Watanabe

Journal of Electron Microscopy   Vol. 57   page： 181-187   2008

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1093/jmicro/dfn019