Magnetostriction in Mn3CuN
Magnetostriction in Mn3CuN
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DOI：
10.1063/1.2917472
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发表时间：
2008-04-21
影响因子：
4
通讯作者：
Takenaka, K.
中科院分区：
文献类型：
--
作者：
Asano, K.;Koyama, K.;Takenaka, K.
据报道，在反钙钛矿 Mn3CuN 中发现了大磁致伸缩。 Mn3CuN在居里温度T-C=143 K时经历从高温（高T）顺磁相到低温铁磁（FM）相的一级转变，并伴随着立方到四方的结构变形。在四方扭曲FM相中，Mn3CuN即使是多晶形式，在平行和垂直于90 kOe的外场的方向上也分别膨胀0.2%和收缩0.1%。这种磁致伸缩可能是由于磁场导致热弹性马氏体变体的重排，类似于 Ni2MnGa 等 FM Heusler 合金。 (c) 2008 年美国物理研究所。
Discovery of large magnetostriction in an antiperovskite Mn3CuN is reported. Mn3CuN undergoes the first-order transition from high-temperature (high-T) paramagnetic to low-temperature ferromagnetic (FM) phase at the Curie temperature T-C=143 K, accompanied by cubic-to-tetragonal structural deformation. In the tetragonally distorted FM phase, Mn3CuN, even in a polycrystalline form, expands 0.2% and shrinks 0.1% in the direction parallel and perpendicular to the external field of 90 kOe, respectively. This magnetostriction is possibly due to rearrangement of thermoelastic martensite variants by magnetic field, similar to FM Heusler alloys such as Ni2MnGa. (c) 2008 American Institute of Physics.