Giant magnetocapacitance in cerium sesquioxide
Giant magnetocapacitance in cerium sesquioxide
复制标题
三氧化二铈中的巨磁电容
DOI：
10.1103/physrevb.98.054423
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发表时间：
2018
影响因子：
3.7
通讯作者：
Kennedy B. J.
中科院分区：
文献类型：
--
作者：
Kolodiazhnyi T.;Sakurai H.;Avdeev M.;Charoonsuk T.;Lamonova K. V.;Pashkevich Yu. G.;Kennedy B. J.
我们报告的结构，磁性，磁介电，和比热性能的六方多晶型。型六方晶在空间群，并显示反铁磁有序在K的磁化率测量检测。磁有序伴随着a形比热异常，其峰值最大在K。各向同性的介电常数表明在，饱和atkOe的大的磁电容效应。在磁有序相，介电极化的弛豫率随磁场的增加而增加，并随温度的升高而发散。磁性计算结果表明，样品经历了原子力显微镜的“易面”有序化过程，这也得到了中子衍射数据的支持。
We report structural, magnetic, magnetodielectric, and specific heat properties of hexagonal polymorph of. The-type hexagonalcrystallizes in thespace group and shows antiferromagnetic ordering atK as detected by magnetic susceptibility measurements. The magnetic ordering is accompanied by a-shape specific heat anomaly with a peak maximum atK. An isotropic dielectric constant demonstrates a large magnetocapacitance effect at, which saturates atkOe. In the magnetically ordered phase the relaxation rate of the dielectric polarization increases with the magnetic field and shows divergence as the temperature approaches. The magnetic calculations indicate thatundergoes “easy plane” AFM ordering, which is also supported by the neutron diffraction data.