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Sr掺杂Eu_(1-x)Sr_xMnO_3体系的核磁共振和磁结构研究
  • ISSN号：1000-3290
  • 期刊名称：Acta Physica Sinica
  • 时间：2012
  • 页码：057501-
  • 分类：O413[理学—理论物理;理学—物理]
  • 作者机构：[1]上海大学理学院物理系,上海200444, [2]富山大学理学部,富山930—8555,日本
  • 相关基金：国家自然科学基金（批准号：50932003,11074163）、上海市教育委员会科技创新基金重点项目（批准号：09ZZ95）和上海市科学技术委员会重大基础研究计划（批准号：08dj1400202,10ZR1411000）资助的课题.
  • 相关项目：高性能钙钛矿结构RFeO3功能新材料晶体制备与应用基础研究
作者： 宋改贝|曹世勋|张佳佳|袁淑娟|清水建次|张金仓|
关键词： Sr掺杂锰氧化物, 自旋玻璃, 铁磁团簇, Sr-doped manganites, spin-glass, ferromagnetic cluster
中文摘要：

对Eu_（1-x）Sr_xMnO_3（x=0.4,0.5,0.6,0.7）体系的磁结构进行了系统的研究.通过核磁共振实验,磁化测量,并结合电输运测量结果表明,Sr的掺入使得EuMnO_3反铁磁母相中出现铁磁相.铁磁相和反铁磁相的竞争导致样品在低温下的自旋玻璃行为.分析认为,Eu_（0.4）Sr_（0.6）MnO_3和Eu_（0.3）Sr_（0.7）MnO_3的磁结构在低温下呈现更加复杂的特征,主要源于铁磁团簇的形成以及无序相的存在.

英文摘要：

The magnetic properties of Eul-xSrxMnO3 （x = 0.4, 0.5, 0.6, 0.7） are systematically studied. Nuclear magnetic resonance, magnetization and electrical transport measurements are carried out, and the results indicate that the substitution of Sr for Eu could produce ferromagnetic phase in antiferromagnetic EuSrMnO3 matrix. The competition between ferromagnetic and antiferromagnetic phases induces the spin-glass behavior. In addition, the magnetic properties of Eu0.4Sr0.6MnO3 and Eu0.3Sr0.7MnO3 show more complex features at low temperatures, resulting mainly from the appearance of ferromagnetic clusters and the existence of disordered structure.

同期刊论文项目
　新型钙钛矿结构RFeO3功能晶体制备与超快光磁相互作用研究
期刊论文 7
高性能钙钛矿结构RFeO3功能新材料晶体制备与应用基础研究
期刊论文 70 专利 2
强关联铬氧化物体系的反常磁性及磁电耦合效应的研究
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期刊信息
  • 《物理学报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国物理学会 中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京603信箱(中国科学院物理研究所)
  • 邮编：100190
  • 邮箱：apsoffice@iphy.ac.cn
  • 电话：010-82649026
  • 国际标准刊号：ISSN：1000-3290
  • 国内统一刊号：ISSN：11-1958/O4
  • 邮发代号:2-425
  • 获奖情况:
  • 1999年首届国家期刊奖,2000年中科院优秀期刊特等奖,2001年科技期刊最高方阵队双高期刊居中国期刊第12位
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  • 被引量:49876