論文

• Ryo Toyama, Yutaka Majima. 7.4 nm linewidth Pt nanowires by electron-beam lithography using non-chemically amplified positive-tone resist and post-exposure bake, Japanese Journal of Applied Physics, Mar. 2024.
• Ryo Toyama, Shiro Kawachi, Jun-ichi Yamaura, Takeshi Fujita, Youichi Murakami, Hideo Hosono, Yutaka Majima. Nanostructure-induced L10-ordering of twinned single-crystals in CoPt ferromagnetic nanowires, Nanoscale Advances, 4, 5270, Oct. 2022.
• Ryo Toyama, Shiro Kawachi, Jun-ichi Yamaura, Youichi Murakami, Hideo Hosono, Yutaka Majima. Large coercivity of 13 kOe in L10-ordered CoPt on Si/SiO2 substrates by hydrogen annealing, Japanese Journal of Applied Physics, May 2022.  公式リンク  
  
• Pei-Chun Yeh, Genki Ohkatsu, Ryo Toyama, Phan Trong Tue, Kostya (Ken) Ostrikov, Yutaka Majima, Wei-Hung Chiang. Towards single electron transistor-based photon detection with microplasma-enabled graphene quantum dots, NANOTECHNOLOGY, 32, 50LT01, Oct. 2021.  公式リンク  
  
• Ryo Toyama, Shiro Kawachi, Jun-ichi Yamaura, Youichi Murakami, Hideo Hosono, Yutaka Majima. Ti underlayer effect on the ordering of CoPt in (Co/Pt)4 multilayer thin films on Si/SiO2 substrates, JPN. J. APPL. PHYS., 59, 075504-1-8, June 2020.
• Ryo Toyama, Shiro Kawachi, Soshi Iimura, Jun-ichi Yamaura, Youichi Murakami, Hideo Hosono, Yutaka Majima. Formation of L10-ordered CoPt during interdiffusion of electron beam-deposited Pt/Co bilayer thin films on Si/SiO2 substrates by rapid thermal annealing, Mater. Res. Express, 7, 066101-1-10, June 2020.
• Mingyue Yang, Ryo Toyama, Phan Trong Tue, Yutaka Majima. Interdiffusion during heteroepitaxial Au growth on Pd thin films by electroless Au plating (ELGP) at room temperature, Applied Physics Express, 13, 015006, Dec. 2019.

国際会議発表 (査読なし・不明)

• Ryo Toyama, Yutaka Majima. Fabrication of Co50Pt50 Ferromagnetic Asymmetric Nanogap Electrodes for Ferromagnetic Single-Electron Transistors, KJF-ICOMEP 2018, Sept. 2018.

学位論文

• Study on Nanostructure Induced L10-Ordering of CoPt Ferromagnetic Nanowires on Si/SiO2 Substrates,  Summary,  Doctor (Engineering),  Tokyo Institute of Technology,  2022/03/26,   
• Study on Nanostructure Induced L10-Ordering of CoPt Ferromagnetic Nanowires on Si/SiO2 Substrates,  Thesis,  Doctor (Engineering),  Tokyo Institute of Technology,  2022/03/26, 
• Study on Nanostructure Induced L10-Ordering of CoPt Ferromagnetic Nanowires on Si/SiO2 Substrates,  Outline,  Doctor (Engineering),  Tokyo Institute of Technology,  2022/03/26,   
• Study on Nanostructure Induced L10-Ordering of CoPt Ferromagnetic Nanowires on Si/SiO2 Substrates,  Exam Summary,  Doctor (Engineering),  Tokyo Institute of Technology,  2022/03/26,   

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