Strong Pressure Effect on the Curie Temperature of Itinerant-Electron Metamagnetic La(Fe<SUB>0.88</SUB>Si<SUB>0.12</SUB>)<SUB>13</SUB>H<I><SUB>y</SUB></I> and La<SUB>0.7</SUB>Ce<SUB>0.3</SUB>(Fe<SUB>0.88</SUB>Si<SUB>0.12</SUB>)<SUB>13</SUB>H<I><SUB>y</SUB></I>

DOI IR HANDLE Web Site Web Site 3 Citations 31 References
  • Fujieda Shun
    Department of Materials Science, Graduate School of Engineering, Tohoku University
  • Fujita Asaya
    Department of Materials Science, Graduate School of Engineering, Tohoku University
  • Fukamichi Kazuaki
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

Bibliographic Information

Other Title
  • Strong Pressure Effect on the Curie Temperature of Itinerant-Electron Metamagnetic La(Fe0.88Si0.12)13Hy and La0.7Ce0.3(Fe0.88Si0.12)13Hy

Search this article

Abstract

The initial pressure shift of the Curie temperature Tc for the first-order transition, dTc⁄dP, for La(Fe0.88Si0.12)13 becomes small after hydrogen absorption. In addition, the hydrogen absorption reduces the ratio of the volume change at Tc to the magnetization squared at Tc, Δω(Tc)⁄M(Tc)F2, suggesting the decrease of the magnetoelastic coupling constant κCmv. On the other hand, dTc⁄dP is enhanced by the partial substitution of Ce for La in connection with the change of the band structure. Consequently, dTc⁄dP of La0.7Ce0.3(Fe0.88Si0.12)13Hy is larger than that of La(Fe0.88Si0.12)13Hy in a wide change of Tc.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 50 (3), 483-486, 2009

    The Japan Institute of Metals and Materials

Citations (3)*help

See more

References(31)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top