On the role of Al doping in La0.7Ca0.3MnO3: A magnetic Compton scattering study

被引：8

作者：

Ahuja, B. L. ^{[1
]}

Tiwari, Shailja ^{[1
]}

Dashora, Alpa ^{[1
]}

Mund, H. S. ^{[1
]}

Sahariya, Jagrati ^{[1
]}

Phase, D. M. ^{[2
]}

Choudhary, R. J. ^{[2
]}

Banerjee, A. ^{[2
]}

Itou, M. ^{[3
]}

Sakurai, Y. ^{[3
]}

机构：

[1] ML Sukhadia Univ, Dept Phys, Udaipur 313001, India

[2] UGC DAE Consortium Sci Res, Indore 452001, Madhya Pradesh, India

[3] SPring 8, Japan Synchrotron Radiat Res Inst, Sayo, Hyogo 6795198, Japan

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 06期

关键词：

TRANSPORT; PEROVSKITES; FIELD;

D O I：

10.1063/1.3624843

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spin and orbital magnetic moments in hole doped manganite La0.7Ca0.3Mn1-xAlxO3 (x = 0, 0.02, and 0.06) have been scrutinized using experimental spin momentum densities. An analysis of magnetic Compton profiles shows that the spin moment of Mn 3d has a major contribution towards the total spin moment and its contribution decreases as we increase the concentration of Al. The present experiment along with magnetization data predict orbital moment of -0.29 +/- 0.03 mu(B)/f.u. in the parent compound (x = 0), which almost disappears on substitution of Al. The results are explained on the basis of imbalance in Mn3+ and Mn4+ charge ratio in these compounds. (C) 2011 American Institute of Physics. [doi:10.1063/1.3624843]

引用

页数：3

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