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首页> 外文期刊>The European physical journal, B. Condensed matter physics >Cation disorder and size effects on the magnetic transition in Ba-containing ferromagnetic manganites
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Cation disorder and size effects on the magnetic transition in Ba-containing ferromagnetic manganites

机译:阳离子和无序尺寸对含钡铁磁锰矿中磁性转变的影响

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摘要

The results of ~(55)Mn NMR, de magnetization, and ac susceptibility studies are presented for La_(0.7)Ca_(0.15)MnO_3, La_(0.7)Sr_(0.15)Ba_(0.15)MnO_3, and La_(0.7)Ba_(0.3)MnO_3 ferromagnetic manganites. While T_C is a function of the mean radius of the La and alkaline-earth ions and the cation disorder, the form of the temperature dependence of the magnetic moment may be expressed as function of T_C only. The phase transition is continuous for all three compounds.
机译:给出了La_(0.7)Ca_(0.15)MnO_3,La_(0.7)Sr_(0.15)Ba_(0.15)MnO_3和La_(0.7)Ba_的〜(55)Mn NMR,退磁和磁化率研究的结果。 (0.3)MnO_3铁磁锰矿。尽管T_C是La和碱土离子的平均半径和阳离子无序的函数,但是磁矩的温度依赖性形式可以仅表示为T_C的函数。所有三种化合物的相变都是连续的。

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