多铁性正交锰氧化物异质结中的相竞争研究

来源 :中国物理学会2012年秋季学术会议 | 被引量 : 0次 | 上传用户:huyanlongbad
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
目前,在Mochizuki-Furukawa模型的基础上,使用Monte Carlo模拟,可以得到正交锰氧化物不同基态下的磁结构,从而产生铁电极化.其中最为引人关注的是ab-CSO(cycloidal spin order)和bc-CSO的基态,根据电子极化模型(KNB模型),它们分别产生a方向的铁电极化和c方向的铁电极化.
其他文献
本实验采用水热法,以硝酸钡和四氯化钛的酒精溶液为原料,分别在210℃,240℃,270℃,300℃和330℃的不同反应温度下制备了具有钙钛矿结构的钛酸钡(BaTiO3)粉体,并在1150℃,1200℃和1250℃的不同烧结温度下得到钛酸钡陶瓷,测试其电学性能.利用X 射线衍射(XRD)和扫描电镜(SEM)对样品的物相和形貌进行了分析.
La2Si2O7 ceramics prepared by reactive sintering process (RS) and conventional solid state reaction (SS) were investigated in the study.We mainly compared the influences of different processes on phas
在第二类多铁材料中,铁电极化的来源普遍认为是特殊的自旋结构,因此在这类多铁材料中表现出极强的磁电耦合效应.近些年发展了不少解释第二类多铁性的理论,其中比较著名的有解释在过渡金属复杂锰氧化物中螺旋自旋序的反Dzyaloshinskii-Moriya (DM) 相互作用理论.
There is an urgent need for developing high performance rechargeable lithium-ions batteries (LIBs) with high charge/discharge rates and high energy capacity to back up new high power tools.1,2 LIBs wi
DyMn2O5是一种具有正交结构的由磁失措所引起的多铁材料,Mn4+,Mn3+之间的磁相互作用共存,这样导致了磁序失措.随着温度或磁场的变化,磁序发生变化,从而伴随着铁电极化的变化.
Multiferroic materials,in which two or all three ferroic order parameters [ferroelectricity,(antiferro)magnetism,and ferroelasticity] are observed,have been the subject of intensive research in recent
Mg2TiO4 powders were made of MgO and TiO2 mixtures with a high-energy ball milling method and the following subsequent calcination at low temperatures.After milling for 30h,the average size of 156.5nm
Here we report on the remarkably enhanced ferroelectric state in the multiferroic compound Mn1-xRux/2MO4.The magnetic and multiferroic properties are investigated by means of magnetic,heat-capacity,an
In this work,nonvolatile bipolar resistive switching behaviors have been observed in ferroelectric Au/BaTiO3/La0.67Sr0.33MnO3 heterostructures.Their materials structure,resistive switching,and ferroel