Magnetocaloric effect and magnetization in a Ni–Mn–Ga Heusler alloy in the vicinity of magnetostructural transition
Magnetocaloric effect and magnetization in a Ni–Mn–Ga Heusler alloy in the vicinity of magnetostructural transition
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DOI：
10.1016/j.jmmm.2003.12.1363
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发表时间：
2003-12
影响因子：
2.7
通讯作者：
A. Aliev;A. Batdalov;S. Bosko;V. Buchelnikov;I. Dikshtein;V. Khovailo;V. Koledov;R. Z. Levitin;V. Shavrov;Toshiyuki Takagi
中科院分区：
文献类型：
--
作者：
A. Aliev;A. Batdalov;S. Bosko;V. Buchelnikov;I. Dikshtein;V. Khovailo;V. Koledov;R. Z. Levitin;V. Shavrov;Toshiyuki Takagi
对具有耦合磁性和结构（马氏体）相变的 Ni2.19Mn0.81Ga 合金的磁性和热力学性能进行了实验和理论研究。磁热效应是在接近磁结构转变温度的温度下在 0-26kOe 的磁场中通过直接方法测量的。为了对磁结构转变附近的合金性能进行理论描述，提出了一种统计模型，该模型考虑了马氏体转变点附近马氏体和奥氏体域的共存。
The magnetic and thermodynamic properties of a Ni2.19Mn0.81Ga alloy with coupled magnetic and structural (martensitic) phase transitions were studied experimentally and theoretically. The magnetocaloric effect was measured by a direct method in magnetic fields 0–26kOe at temperatures close to the magnetostructural transition temperature. For theoretical description of the alloy properties near the magnetostructural transition a statistical model is suggested, that takes into account the coexistence of martensite and austenite domains in the vicinity of martensite transformation point.