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Journal Articles

Intrinsic 2D ferromagnetism in V$$_{5}$$Se$$_{8}$$ epitaxial thin films

Nakano, Masaki*; Wang, Y.*; Yoshida, Satoshi*; Matsuoka, Hideki*; Majima, Yuki*; Ikeda, Keisuke*; Hirata, Yasuyuki*; Takeda, Yukiharu; Wadachi, Hiroki*; Kohama, Yoshimitsu*; et al.

Nano Letters, 19(12), p.8806 - 8810, 2019/12

 Times Cited Count:22 Percentile:91.07(Chemistry, Multidisciplinary)

Journal Articles

Magnetic and electronic properties of B-site-ordered double-perovskite oxide La$$_{2}$$CrMnO$$_{6}$$ thin films

Yoshimatsu, Kohei*; Ishimaru, Junya*; Watarai, Keisuke*; Yamamoto, Kohei*; Hirata, Yasuyuki*; Wadachi, Hiroki*; Takeda, Yukiharu; Horiba, Koji*; Kumigashira, Hiroshi*; Sakata, Osami*; et al.

Physical Review B, 99(23), p.235129_1 - 235129_8, 2019/06

 Times Cited Count:5 Percentile:51.19(Materials Science, Multidisciplinary)

Journal Articles

Secondary ion emission from PTFE upon C$$_{60}$$ ion impacts

Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Takahashi, Yasuyuki*; Narumi, Kazumasa; Kamiya, Tomihiro

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 156, 2012/01

Journal Articles

Secondary ion counting for surface-sensitive chemical analysis of organic compounds using time-of-flight secondary ion mass spectroscopy with cluster ion impact ionization

Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Takahashi, Yasuyuki*; Narumi, Kazumasa

Review of Scientific Instruments, 82(3), p.033101_1 - 033101_5, 2011/03

 Times Cited Count:8 Percentile:42.12(Instruments & Instrumentation)

Journal Articles

Interlayer Josephson couplings in Hg-based multi-layered cuprates

Hirata, Yasuyuki*; Kojima, Kenji*; Uchida, Shinichi*; Ishikado, Motoyuki; Iyo, Akira*; Eisaki, Hiroshi*; Tajima, Setsuko*

Physica C, 470(Suppl.1), p.S44 - S46, 2010/12

 Times Cited Count:2 Percentile:13.13(Physics, Applied)

Infrared reflectivity spectra of the multilayered HgBa$$_{2}$$Ca$$_{n-1}$$Cu$$_{n}$$O$$_{2n+2+delta}$$ (${it n}$ = 2, 3, 4, and 5) are measured. Optical plasma modes associated with the Josephson coupling between CuO$$_{2}$$ planes within a multilayer appear below $$T$$$$_{rm c}$$ in the c-axis component of the reflectivity spectrum. For the bilayer and trilayer compound an optical Josephson plasma mode appears at unprecedentedly high frequency, $$sim$$ 700-800 cm$$^{-1}$$, below $$T$$$$_{rm c}$$. The plasma frequencies appreciably decrease in four- and five-layer compounds which indicates the suppression of superconducting order in the inner CuO$$_{2}$$ planes, consistent with the result of NMR experiment.

Journal Articles

Comparison of secondary ion emission yields for poly-tyrosine between cluster and heavy ion impacts

Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Takahashi, Yasuyuki; Narumi, Kazumasa

Nuclear Instruments and Methods in Physics Research B, 268(19), p.2930 - 2932, 2010/10

 Times Cited Count:3 Percentile:30.42(Instruments & Instrumentation)

Journal Articles

The Design of a tapered dimple-type mode converter/launcher for high-power gyrotrons

Hirata, Yosuke*; Mitsunaka, Yoshika*; Hayashi, Kenichi*; Ito, Yasuyuki*; Sakamoto, Keishi; Imai, Tsuyoshi

IEEE Transactions on Plasma Science, 31(1), p.142 - 145, 2003/02

 Times Cited Count:11 Percentile:36.11(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Development of high power 170GHz gyrotron for ITER

Sakamoto, Keishi; Kasugai, Atsushi; Tsuneoka, Masaki; Takahashi, Koji; ; Imai, Tsuyoshi; *; Hayashi, Kenichi*; Mitsunaka, Yoshika*; Hirata, Yosuke*; et al.

22nd International Conference on Infrared and Millimeter Waves Conference Digest, p.106 - 107, 1997/00

no abstracts in English

Journal Articles

Cold test of gyrotron output ware-beam splitter and combiner

Mitsunaka, Yoshika*; Hirata, Yosuke*; Hayashi, Kenichi*; Ito, Yasuyuki*; Sakamoto, Keishi; Kasugai, Atsushi; Takahashi, Koji; Imai, Tsuyoshi

22nd International Conference on Infrared and Millimeter Waves Conference Digest, p.19 - 20, 1997/00

no abstracts in English

Patent

管体掴持機構

佐野 一哉; 中村 保之; 岩井 紘基; 平田 智宏

松田 進*; 今井 富雄*

JP, 2014-035293  Patent licensing information  Patent publication (In Japanese)

【課題】単純な機構で、二重管体構造を一度で引き上げることが可能となり、管体撤去工程などを簡略化することができる管体掴持機構を提供する。 【解決手段】本発明は、管体(P1、P2)を掴持する管体掴持機構10であって、第1の円周上に配された支点を中心として回動する複数の外管掴持爪130と、前記第1の円周の内周にある第2の円周上に配された支点を中心として回動する複数の内管掴持爪230と、前記外管掴持爪130と外側プロフィール部410で当接すると共に、前記内管掴持爪230と内側プロフィール部420で当接する環状カム部材400と、前記環状カム部材400を昇降する環状カム部材駆動用シリンダ450と、からなることを特徴とする。

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