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and TbFeYoneda, Yasuhiro; Kohara, Shinji*; Ito, Masayoshi*; Abe, Hiroshi; Takeuchi, Mitsuaki*; Uchida, Hirohisa*; Matsumura, Yoshihito*
Transactions of the Materials Research Society of Japan, 38(1), p.109 - 112, 2013/03
We performed local structure analysis of SmFe and TbFe in the crystallization process from amorphous by using synchrotron X-ray pair-distribution function (PDF) method. The giant mangetostrictive materials of these compounds can be controlled its property by ion irradiation. In amorphous TbFe and SmFe, the mosaic block size was small and the short-range order structure owing to Fe-Fe network maintained. In crystalline SmFe, a rigid long-range order structure of Fe-Fe and Sm-Sm network coexisted and it had a large mosaic block size. On the other hand, in crystalline TbFe, Fe-Fe network degraded by Tb-Tb network owing to its lattice tolerance.
Yoneda, Yasuhiro; Nishihata, Yasuo; Abe, Hiroshi; Uchida, Hirohisa*; Matsumura, Yoshihito*; Takeuchi, Mitsuaki*; Tanakamaru, Tempei*; Shinohara, Yoshiaki*
no journal, ,
The material group that is called smart materials of ferroelectrics, magneto-strictive materials, shape-memory alloys, and hydrogen-storage materials can control physical properties by the elastic strain caused in the crystal. Because the irradiation by the ion beam and the electron beam can efficiently change the elastic strain in the crystal, it is efficient measures to the characteristic modification of a smart material. In this study group, pair-distribution function (PDF) was applied as an new visualization techniques of the crystallographic structure of the irradiation material. It examined whether the irradiation effect of smart materials was extractive by the PDF analysis.
Suemitsu, Akinobu*; Masumoto, Kiyoshi*; Onoe, Hironori; Takeuchi, Ryuji
no journal, ,
no abstracts in English
