Magnetic properties of electron-doped Y1−xCexMnO3 compounds
Magnetic properties of electron-doped Y1−xCexMnO3 compounds
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DOI：
10.1016/j.jmmm.2008.05.003
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发表时间：
2008-10
影响因子：
2.7
通讯作者：
S. Srivastava;M. Kar;S. Ravi;P. Mishra;P. D. Babu
中科院分区：
文献类型：
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作者：
S. Srivastava;M. Kar;S. Ravi;P. Mishra;P. D. Babu
铈掺杂的Y1− xCexMnO 3化合物已经以单相形式制备，x=0至0.10。X射线衍射（XRD）图谱可以用P63 cm空间群进行分析。交流磁化率和磁化强度测量的温度变化表明，这些Ce掺杂的材料表现出弱的铁磁转变。所观察到的铁磁转变归因于电子掺杂引起的Mn 2+和Mn 3+离子之间的双交换铁磁相互作用。利用束缚磁极化子（BMP）模型对磁-氢回线进行了分析，发现磁-氢回线沿沿着具有线性贡献。随着Ce掺杂的增加，已观察到饱和磁化强度的增加和BMP浓度的降低。
Cerium-doped Y1−xCexMnO3compounds have been prepared in single-phase form for x=0 to 0.10. X-ray diffraction (XRD) patterns could be analyzed by using P63cm space group. Temperature variations of ac susceptibility and magnetization measurements show that these Ce-doped materials exhibit weak ferromagnetic transition. The observed ferromagnetic transition is attributed to the double exchange ferromagnetic interaction between Mn2+and Mn3+ions due to electron doping. The M–H loops exhibit hysteresis along with linear contribution and were analyzed based on bound magnetic polaron (BMP) model. Increase in saturation magnetization and decrease in BMP concentrations have been observed with increase in Ce doping.