Dielectric relaxation induced internal electric field and its effect on magnetoelectric state in Co4Nb2O9
Dielectric relaxation induced internal electric field and its effect on magnetoelectric state in Co4Nb2O9
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Co4Nb2O9 介质弛豫感应内电场及其对磁电态的影响
DOI：
10.1111/jace.15400
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发表时间：
2018-06
影响因子：
3.9
通讯作者：
C. C. Wang
中科院分区：
文献类型：
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作者：
Y. M. Xie;H. Zang;W. D. Ceng;S. T. Wang;C. C. Wang
研究了磁电反铁磁体co4nb2o9的热电流和介电性能。样品在远高于n<s:1>温度的温度范围内表现出2种热激活的介电弛豫，其中低温弛豫和高温弛豫分别为偶极弛豫和麦克斯韦-瓦格纳弛豫。在样品中发现了两种类型的偶极子：弛豫偶极子和磁场感应偶极子。一个内部电场是由于弛豫偶极子的排序而形成的。观察到三个电流峰。两个较高温度的电流峰对应于介电弛豫。最低温度电流峰值包含一个正尖端和负dip。尖端和倾角分别与外场和内场诱导的铁电去极化有关。
Pyrocurrent and dielectric properties of magnetoelectric antiferromagnet Co4Nb2O9have been investigated. The sample shows 2 thermally activated dielectric relaxations in the temperature range far above Néel temperature with the low‐ and high‐temperature ones being a dipolar and Maxwell‐Wagner relaxations, respectively. Two types of dipoles: relaxing dipoles and magnetic‐field‐induced dipoles were found in the sample. An internal electric field is formed due to the ordering of relaxing dipoles. Three current peaks were observed. The 2 higher temperature current peaks correspond to the dielectric relaxations. The lowest temperature current peak contains a positive tip and negative dip. The tip and dip are related to the depolarization of ferroelectricity induced by external and internal fields, respectively.
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Co4Nb2O9 中的大磁电耦合
影响因子：
4.6
作者：
Fang Y;Song YQ;Zhou WP;Zhao R;Tang RJ;Yang H;Lv LY;Yang SG;Wang DH;Du YW
通讯作者：
Du YW
影响因子：
3.2
作者：
S. Devautour;J. Vanderschueren;J. Giuntini;F. Henn;J. Zanchetta
通讯作者：
S. Devautour;J. Vanderschueren;J. Giuntini;F. Henn;J. Zanchetta
影响因子：
3.2
作者：
M. Perlman
通讯作者：
M. Perlman
影响因子：
3.2
作者：
R. A. Creswell;M. Perlman
通讯作者：
R. A. Creswell;M. Perlman
DOI：
10.1039/c3cp54776k
发表时间：
2014-02
期刊：
Physical chemistry chemical physics : PCCP
影响因子：
--
作者：
Chandan De;Tai-Hoon Kim;K. Kim;A. Sundaresan
通讯作者：
Chandan De;Tai-Hoon Kim;K. Kim;A. Sundaresan