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铁掺杂钙钛矿稀土锰氧化物的电子自旋共振
Electron Spin Resonance （ESR） of Fe Doped Bilayered Manganite La0.67Ca0.33MnO3
【摘要】 通过电子自旋共振研究了Fe掺杂对钨钛矿稀土锰握拳化物La0.67Ca0.33Mn1-xFexO3(x=0,0.04)磁性的影响,尤其是在铁磁-顺磁转变温度附近磁性的变化,这个转变与CMR效应有密切联系。通过分析掺杂前后ESR谱线的变化,发现Fe的掺杂降低了样品的铁磁转变温度TC,而且降低了相分离发生的温度区间。Fe的掺杂削弱系统内的双交换作用和铁磁关联。
【Abstract】 In this paper,several kinds of manganites have been investigated in details by ESR.The magnetic properties of Fe doped La0.67Ca0.33MnO3(x=0.0,0.04) single crystal has been studied,especially the ones near the ferromagnetic to paramagnetic transition temperature which is related with the CMR effect.It is found that the doping of Fe ions decreases the temperature range of phase separation,and the size of ferromagnetic clusters.
【基金】 内蒙自然科学基金资助项目(项目编号:2009MS0101)
- 【文献出处】 阴山学刊(自然科学) ,Yinshan Academic Journal(Natural Science Edition) , 编辑部邮箱 ,2010年03期
- 【分类号】O482.5
- 【被引频次】2
- 【下载频次】117