Pressure dependence of magnetic entropy change and magnetic transition in MnAs1-x Sbx

H. Wada, S. Matsuo, A. Mitsuda

研究成果: ジャーナルへの寄稿学術誌査読

40 被引用数 (Scopus)

抄録

The pressure dependence of magnetic entropy change, ΔS, of MnAs1-x Sbx has been examined. The peak values of ΔS of MnAs and MnAs0.93 Sb0.07 are slightly increased with increasing pressure below the critical pressure for disappearance of the NiAs-type structure. It has been revealed that MnAs0.93 Sb0.07 undergoes a first-order magnetic transition with and without a structural transformation depending on pressure. The entropy change associated with the structural transformation, Δ Sst, is found to be at most 10% of ΔS in this compound. The origin of small Δ Sst in this system is discussed. The peak value of ΔS of Mn1.03 As0.7 Sb0.3 is gradually decreased with increasing pressure above 2.47 kbar, which is due to broadening of the magnetic transition under high pressure.

本文言語英語
論文番号092407
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
79
9
DOI
出版ステータス出版済み - 3月 3 2009

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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