Preprints of Annual Meeting of The Ceramic Society of Japan
Preprints of Fall Meeting of The Ceramic Society of Japan
Annual Meeting of The Ceramic Society of Japan, 2008
Session ID : 2C25
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Host: The Ceramic Society of Japan

Synthesis of Structure-controlled and Crystal-oriented Magnetostrictive SmFe2 by Use of Microgravity Circumstances
*Takeshi Okutani, Hiromichi Ono, Hideaki Nagai, Mikito Mamiya
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Keywords: Giant magnetostrictive materials, Microgravity, SmFe2, Structure control, Crystalline orientation, Unidirectional solidification
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Abstract

Structure-controlled and crystal-oriented magnetostrictive SmFe2 was synthesized by unidirectional solidification of Sm-7Fe in microgravity of 10-3g for 1.43s. The product was composed of sheet-dendrite of SmFe2 sandwiched between Fe-rich layers and was oriented toward <111> along cooling direction. The magnetostriction of product to the cooling (solidification) direction was 3200ppm.

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© The Ceramic Society of Japan 2008
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