Enhancement of ferromagnetism in Ni excess Cu1-xNixMnSb half Heusler alloys

被引：10

作者：

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

Dashora, Alpa ^{[1
]}

Tiwari, Shailja ^{[1
]}

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

Halder, Madhumita ^{[2
]}

Yusuf, S. M. ^{[2
]}

Itou, M. ^{[3
]}

Sakurai, Y. ^{[3
]}

机构：

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

[2] Bhabha Atom Res Ctr, Div Solid State Phys, Bombay 400085, Maharashtra, India

[3] Japan Synchrotron Radiat Res Inst, Expt Res Div, Mikazuki, Hyogo 6795198, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2012年 / 111卷 / 03期

关键词：

Ferromagnetic materials - Ferromagnetism - Copper alloys - Manganese - Manganese alloys - Nickel;

D O I：

10.1063/1.3682544

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spin momentum densities of Cu1-xNixMnSb (for x = 0.17 and 0.22), derived from experimental magnetic Compton profiles (MCPs), show an increase in magnetic moment while going from x = 0.17 -> 0.22, which is attributed to Mn 3d states. MCPs along with magnetization data suggest a negligible contribution of orbital moment. The MCPs and spin moments at Mn 3d states computed using the spin polarized relativistic Korringa-Kohn-Rostoker technique are in good agreement with the experimental data. An unusual increase in magnetic moment (2.77 +/- 0.03 mu(B)/f.u. for x = 0.17 to 3.94 +/- 0.03 mu(B)/f.u. for x = 0.22) is due to significant rise in local magnetic moment on Mn site. For x = 0.22 (0.17), presence of antiferromagnetic phase is observed to be 2 (31)%. (C) 2012 American Institute of Physics. [doi :10.1063/1.3682544]

引用

页数：5

共 18 条

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