The magnetic properties of multiferroic BaCoF4

The magnetic properties of multiferroic BaCoF4
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多铁性BaCoF4的磁性能

DOI:
10.1063/1.4976582
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发表时间:
2017-02
期刊:
影响因子:
1.6
通讯作者:
Du Jun
Du Jun
中科院分区:
材料科学4区
文献类型:
--
作者:
Zhou Shuang;Dai Chuanjun;Xu Qingyu;Du Jun

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采用水热法制备了多铁性氟化钴钡BaCoF4。在低温至 5 K 下无磁滞回线的外加磁场相关磁化强度 (M-H) 曲线的直线形状中,证实了反铁磁结构,并排除了由于 Dzyaloshinskii-Moriya 相互作用而可能产生的弱铁磁性。在磁场下冷却后,在 T<50 K 的低温下观察到明显的交换偏置效应,这归因于 不同自旋构型的两相之间交换耦合。此外,在室温下观察到显着的磁介电效应,这被解释为磁场改变了不同层之间的弱相互作用。
Multiferroic barium cobalt fluoride, BaCoF4, has been prepared by hydrothermal method. The antiferromagnetic structure has been confirmed, and the possible weak ferromagnetism due to Dzyaloshinskii-Moriya interaction has been excluded, from the straight line shape of applied magnetic field dependent magnetization (M-H) curve without hysteresis loop at low temperature down to 5 K. After cooling under a magnetic field, conspicuous exchange bias effect was observed at low temperature of T<50 K, which was attributed to the exchange coupling between the two phases of different spin configuration. Furthermore, significant magnetodielectric effect was observed at room temperature, which has been interpreted to the magnetic field modified weak interaction between different layers.
DOI: 10.1103/physrevb.6.2677
发表时间: 1972-10
期刊: Physical Review B
影响因子: 3.7
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