A位平均离子尺寸对六方RMnO3多铁化合物的结构和性能调控

冯少敏 王丽娟 朱金龙 刘清青 李凤英 靳常青

冯少敏, 王丽娟, 朱金龙, 刘清青, 李凤英, 靳常青. A位平均离子尺寸对六方RMnO3多铁化合物的结构和性能调控[J]. 高压物理学报, 2011, 25(2): 143-146 . doi: 10.11858/gywlxb.2011.02.009
引用本文: 冯少敏, 王丽娟, 朱金龙, 刘清青, 李凤英, 靳常青. A位平均离子尺寸对六方RMnO3多铁化合物的结构和性能调控[J]. 高压物理学报, 2011, 25(2): 143-146 . doi: 10.11858/gywlxb.2011.02.009
FENG Shao-Min, WANG Li-Juan, ZHU Jin-Long, LIU Qing-Qing, LI Feng-Ying, JIN Chang-Qing. Structure and Properties Modulation of RMnO3 Multiferroic Materials by Average Ionic Radius at A-Site[J]. Chinese Journal of High Pressure Physics, 2011, 25(2): 143-146 . doi: 10.11858/gywlxb.2011.02.009
Citation: FENG Shao-Min, WANG Li-Juan, ZHU Jin-Long, LIU Qing-Qing, LI Feng-Ying, JIN Chang-Qing. Structure and Properties Modulation of RMnO3 Multiferroic Materials by Average Ionic Radius at A-Site[J]. Chinese Journal of High Pressure Physics, 2011, 25(2): 143-146 . doi: 10.11858/gywlxb.2011.02.009

A位平均离子尺寸对六方RMnO3多铁化合物的结构和性能调控

doi: 10.11858/gywlxb.2011.02.009
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    通讯作者:

    靳常青

Structure and Properties Modulation of RMnO3 Multiferroic Materials by Average Ionic Radius at A-Site

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    Corresponding author: JIN Chang-Qing
  • 摘要: 实验研究了A位离子的化学内压对Ho1-xDyxMnO3(0x1)固溶体相结构物理性质的影响,发现掺杂稀土离子Dy3+所引起的内压力可使具有六方结构的RMnO3向高压正交钙钛矿结构转变,形成六方相、六方相与高压正交相混相以及高压正交相3个区域。利用Rietveld方法,对Ho1-xDyxMnO3的X射线衍射数据进行结构精修,得到了六方相的晶格参数和晶胞体积随Dy3+含量的变化规律,此外还测量了磁化率和比热随温度的变化关系。研究结果表明,Dy3+对Ho3+的替代增强了稀土离子间的相互作用,使磁有序温度T2向高温方向移动,而Mn3+自旋重新取向温度TSR则呈现先减小后增加的趋势。

     

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出版历程
  • 收稿日期:  2010-01-08
  • 修回日期:  2010-01-08
  • 发布日期:  2011-04-15

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