Magnetocaloric properties of (MnFe)2PGe and (MnFe)2PSi compounds fabricated by a melting method

Masahiro Hirashima; Hirofumi Wada

doi:10.1063/1.4961337

Magnetocaloric properties of (MnFe)₂PGe and (MnFe)₂PSi compounds fabricated by a melting method

Masahiro Hirashima, Hirofumi Wada

物性物理学

研究成果: 書籍/レポートタイプへの寄稿 › 会議への寄与

2 被引用数 (Scopus)

抄録

The compounds (MnFe)₂PGe and (MnFe)₂PSi are known to exhibit giant magnetocaloric effects due to a first-order magnetic transition (FOMT) near room temperature. These materials are usually prepared by a solid-phase reaction method, so that they are porous and brittle. In this study, we have fabricated (MnFe)₂PGe and (MnFe)₂PSi compounds by melting as-sintered compounds and examined structural and magnetic properties. It is found that for both compounds, the crystal structure is unchanged by melting. As-sintered samples undergo a sharp FOMT, while the samples after melting exhibit a broad magnetic transition. On the other hand, a sharp FOMT recovers by post-annealing. The origins of disappearance and recovery of the FOMT will be discussed.

本文言語	英語
ホスト出版物のタイトル	Frontiers in Materials Science, FMS 2015
ホスト出版物のサブタイトル	Proceedings of the 2nd International Symposium on Frontiers in Materials Science
編集者	Masato Yoshiya, Nam-Nhat Hoang, Markus Munzenberg, Tomoyuki Yamamoto
出版社	American Institute of Physics Inc.
ISBN（電子版）	9780735414211
DOI	https://doi.org/10.1063/1.4961337
出版ステータス	出版済み - 8月 26 2016
イベント	2nd International Symposium on Frontiers in Materials Science, FMS 2015 - Tokyo, 日本継続期間: 11月 19 2015 → 11月 21 2015

出版物シリーズ

名前	AIP Conference Proceedings
巻	1763
ISSN（印刷版）	0094-243X
ISSN（電子版）	1551-7616

その他

その他	2nd International Symposium on Frontiers in Materials Science, FMS 2015
国/地域	日本
City	Tokyo
Period	11/19/15 → 11/21/15

!!!All Science Journal Classification (ASJC) codes

物理学および天文学（全般）

文献へのアクセス

10.1063/1.4961337

他のファイルとリンク

引用スタイル

Hirashima, M., & Wada, H. (2016). Magnetocaloric properties of (MnFe)₂PGe and (MnFe)₂PSi compounds fabricated by a melting method. In M. Yoshiya, N-N. Hoang, M. Munzenberg, & T. Yamamoto (Eds.), Frontiers in Materials Science, FMS 2015: Proceedings of the 2nd International Symposium on Frontiers in Materials Science [020004] (AIP Conference Proceedings; Vol. 1763). American Institute of Physics Inc.. https://doi.org/10.1063/1.4961337

Magnetocaloric properties of (MnFe)₂PGe and (MnFe)₂PSi compounds fabricated by a melting method. / Hirashima, Masahiro; Wada, Hirofumi.
Frontiers in Materials Science, FMS 2015: Proceedings of the 2nd International Symposium on Frontiers in Materials Science. ed. / Masato Yoshiya; Nam-Nhat Hoang; Markus Munzenberg; Tomoyuki Yamamoto. American Institute of Physics Inc., 2016. 020004 (AIP Conference Proceedings; Vol. 1763).

研究成果: 書籍/レポートタイプへの寄稿 › 会議への寄与

Hirashima, M & Wada, H 2016, Magnetocaloric properties of (MnFe)₂PGe and (MnFe)₂PSi compounds fabricated by a melting method. in M Yoshiya, N-N Hoang, M Munzenberg & T Yamamoto (eds), Frontiers in Materials Science, FMS 2015: Proceedings of the 2nd International Symposium on Frontiers in Materials Science., 020004, AIP Conference Proceedings, vol. 1763, American Institute of Physics Inc., 2nd International Symposium on Frontiers in Materials Science, FMS 2015, Tokyo, 日本, 11/19/15. https://doi.org/10.1063/1.4961337

Hirashima M, Wada H. Magnetocaloric properties of (MnFe)₂PGe and (MnFe)₂PSi compounds fabricated by a melting method. In Yoshiya M, Hoang N-N, Munzenberg M, Yamamoto T, editors, Frontiers in Materials Science, FMS 2015: Proceedings of the 2nd International Symposium on Frontiers in Materials Science. American Institute of Physics Inc. 2016. 020004. (AIP Conference Proceedings). doi: 10.1063/1.4961337

Hirashima, Masahiro ; Wada, Hirofumi. / Magnetocaloric properties of (MnFe)₂PGe and (MnFe)₂PSi compounds fabricated by a melting method. Frontiers in Materials Science, FMS 2015: Proceedings of the 2nd International Symposium on Frontiers in Materials Science. editor / Masato Yoshiya ; Nam-Nhat Hoang ; Markus Munzenberg ; Tomoyuki Yamamoto. American Institute of Physics Inc., 2016. (AIP Conference Proceedings).

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abstract = "The compounds (MnFe)2PGe and (MnFe)2PSi are known to exhibit giant magnetocaloric effects due to a first-order magnetic transition (FOMT) near room temperature. These materials are usually prepared by a solid-phase reaction method, so that they are porous and brittle. In this study, we have fabricated (MnFe)2PGe and (MnFe)2PSi compounds by melting as-sintered compounds and examined structural and magnetic properties. It is found that for both compounds, the crystal structure is unchanged by melting. As-sintered samples undergo a sharp FOMT, while the samples after melting exhibit a broad magnetic transition. On the other hand, a sharp FOMT recovers by post-annealing. The origins of disappearance and recovery of the FOMT will be discussed.",

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N2 - The compounds (MnFe)2PGe and (MnFe)2PSi are known to exhibit giant magnetocaloric effects due to a first-order magnetic transition (FOMT) near room temperature. These materials are usually prepared by a solid-phase reaction method, so that they are porous and brittle. In this study, we have fabricated (MnFe)2PGe and (MnFe)2PSi compounds by melting as-sintered compounds and examined structural and magnetic properties. It is found that for both compounds, the crystal structure is unchanged by melting. As-sintered samples undergo a sharp FOMT, while the samples after melting exhibit a broad magnetic transition. On the other hand, a sharp FOMT recovers by post-annealing. The origins of disappearance and recovery of the FOMT will be discussed.

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