Fe替代对六方YMnO3的等结构变化：对多铁性的影响
强关联电子
2014-09-23 v5
摘要
六方YMnO3中的铁替代引起超过晶胞的等结构晶格内变化，与非磁性B位掺杂剂的效果相反。磁化强度M(T)证据表明样品具有反铁磁（AFM）有序，几乎没有弱铁磁性，并且交换相互作用的度量随Fe掺杂而抑制，归因于Mn-O平面键长的增加。铁电（FE）P-E滞后回线反映了随着Fe替代增加而减弱且导电的铁电性，追溯到多面体弯曲的减少。介电常数ε'(T)结果显示在奈尔温度处高度依赖掺杂的异常，表明强磁致伸缩可调性，并暗示线性磁电（ME）耦合。我们认识到结构-性质变化与Fe掺杂的对应关系，与报道的冷却至TN以下的磁致伸缩效应一致。AFM-FE-ME性质与其相关微观结构属性的相关性强调了自旋-晶格-偶极子耦合，并提供了重要的特征参数。
引用
@article{arxiv.1204.4800,
title = {Isostructural changes in h-YMnO3 by Fe-substitution: effects on multiferroicity},
author = {Sonu Namdeo and A. M. Awasthi},
journal= {arXiv preprint arXiv:1204.4800},
year = {2014}
}
备注
A later (revised) submission of this work (arXiv:1303.3398, titled 'Inestigation of charge states and multiferroicity in Fe-doped YmnO3'), which has also been published as a journal article (J. Appl. Phys. 113, 104101 (2013); doi: 10.1063/1.4794831) renders this arXiv article (arXiv:1204.4800) redundant and confusing/irrelevant, and is therefore requested to be removed for the arXiv records