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

Masahiro Hirashima, Hirofumi Wada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publicationFrontiers in Materials Science, FMS 2015
Subtitle of host publicationProceedings of the 2nd International Symposium on Frontiers in Materials Science
EditorsMasato Yoshiya, Nam-Nhat Hoang, Markus Munzenberg, Tomoyuki Yamamoto
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735414211
DOIs
Publication statusPublished - Aug 26 2016
Event2nd International Symposium on Frontiers in Materials Science, FMS 2015 - Tokyo, Japan
Duration: Nov 19 2015Nov 21 2015

Publication series

NameAIP Conference Proceedings
Volume1763
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other2nd International Symposium on Frontiers in Materials Science, FMS 2015
CountryJapan
CityTokyo
Period11/19/1511/21/15

Fingerprint

melting
solid phases
recovery
magnetic properties
crystal structure
annealing
room temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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, Japan, 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). https://doi.org/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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