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Publication
Featured researches published by Hirofumi Minami.
Japanese Journal of Applied Physics | 1995
Hirofumi Minami; Junpei Yuyama
We have developed a magnetically levitated transport system in vacuum using the strong pinning force of high-T c superconductors. This transport system consists of superconductors prepared by the quench-and-melt-growth (QMG) method and permanent magnets. The superconductors move within the cooling jacket inserted into the transport chamber. A transfer arm moves in the transport chamber without any contact or sliding, because stable levitation is brought about by magnetic interaction between the magnet attached to the arm and the superconductor. In this paper, structure and performance test results are described.
Japanese Journal of Applied Physics | 1991
Qiquan Geng; Hirofumi Minami; Kazunori Chihara; Junpei Yuyama; Eiichi Goto
A new technique has been developed to remove flux quanta trapped in superconducting film. It consists of measuring the magnetic field distribution over a superconductor with an rf SQUID and removing the detected trapped flux using laser beam scanning. The trapped flux movement follows the motion of the Ar laser beam exactly. By scanning the laser beam over the trapped flux quanta, the trapped flux is successfully moved to any desired location.
Journal of Cryogenics and Superconductivity Society of Japan | 1992
Qiquan Geng; Hirofumi Minami; Kazunori Chihara; Junpei Yuyama; Eiichi Goto
A new technique has been developed to remove flux quanta trapped in superconducting film. In 1984, one of the present authors proposed a micro heat flushing (μHF) method for achieving perfect magnetic shielding. In this method, a small area on a superconducting thin film is heated and turned into the normal state. The entire film surface is then swept over by the normal hot spot, which captures the trapped flux and carries it either to an unimportant region or out of the superconductor. It has been shown that the trapped flux movement follows the motion of the Ar laser beam exactly. By scanning the laser beam over the trapped flux quanta, the trapped flux is successfully moved to any desired location.
Archive | 2005
Hirofumi Minami; Kenji Ago; Takafumi Kawaguchi; Toshio Koike; Junpei Yuyama
Archive | 2008
Kazuhiro Musha; Hirofumi Minami; Takafumi Kawaguchi
Archive | 2011
Takahiro Miyata; Masao Murata; Satoshi Shiba; Hirofumi Minami; Seiichi Satou; Kazuhiro Musha; Mitsuru Yahagi; Jyunpei Yuyama
Archive | 2010
Seiichi Sato; Mitsuru Yahagi; Hirofumi Minami; Kazuhiro Musha; Junpei Yuyama; Masao Murata; Takahiro Miyata; Kyuzo Nakamura
Archive | 2001
Hirofumi Minami; Junpei Yuyama
Archive | 2009
Seiichi Sato; Mitsuru Yahagi; Hirofumi Minami; Kazuhiro Musha; Makoto Takahashi
Archive | 2008
Kazuhiro Musha; Hirofumi Minami; Takafumi Kawaguchi
Collaboration
Dive into the Hirofumi Minami's collaboration.
