Phase diagram of the spinel oxide MnV 2 O 4
Phase diagram of the spinel oxide MnV 2 O 4
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DOI：
10.1103/physrevb.78.024406
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发表时间：
2008-07
影响因子：
3.7
通讯作者：
V. Hardy;Y. Bréard;C. Martin
中科院分区：
文献类型：
--
作者：
V. Hardy;Y. Bréard;C. Martin
对${\text{MnV}}_{2}{\text{O}}_{4}$陶瓷样品进行了磁化率、磁化率和热容测量。两个主要结果如下：（i）一组一致的实验特征提供了强有力的支持，存在两个单独的过渡在零场和（ii）旁边的亚铁磁转变，在$H\ensuremath{-}T$平面的相图包含两个一级转变（FOT）线，都连接到零场的磁结构转变温度。新的FOT线发现在$\text{低-}H/\text{低-}T$的场诱导排列的结构内的tetrahedrons域进行了讨论。
Magnetization, susceptibility, and heat-capacity measurements were carried out on ${\text{MnV}}_{2}{\text{O}}_{4}$ ceramic samples. The two main results are as follows: (i) a consistent set of experimental features provides strong support to the existence of two separate transitions in zero-field and (ii) beside the ferrimagnetic transition, the phase diagram in the $H\ensuremath{-}T$ plane contains two first-order transition (FOT) lines, both connected to the magnetostructural transition temperature in zero field. The new FOT line found at $\text{low-}H/\text{low-}T$ is discussed in terms of field-induced alignment within the structure of tetragonal domains.