Magnetic, magnetocaloric and neutron diffraction studies on TbNi5-xMx (M = Co and Fe) compounds

JOURNAL OF ALLOYS AND COMPOUNDS

卷:509

Article

Haldar, Arabinda¹  Dhiman, I.²  Das, A.²  Suresh, K. G.¹  Nigam, A. K.³ 

[1] Indian Inst Technol, Dept Phys, Bombay 400076, Maharashtra, India

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

[3] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

关键词: Intermetallics;    Magnetization;    Magnetocaloric effect;    Neutron diffraction;   

DOI  :  10.1016/j.jallcom.2011.01.012

来源: Elsevier

【 摘 要 】

The effect of substitution of Co and Fe for Ni in TbNi5 on the structural, magnetic and magneto-thermal properties has been investigated. Considerable enhancement of Curie temperature is observed with Fe substitution, whereas the increase is nominal in the case of Co. Neutron diffraction measurements reveal the redistribution of moments and site preference of substitutional ions in Ni 2c and 3g sites. In TbNi4Fe, both Ni and Fe as well as Tb are found to carry moment while in the case of TbNi4Co, mainly Tb carries the moment. Magnetocaloric behavior has been investigated from the magnetization and the heat capacity measurements. The magnetic and magnetocaloric properties are found to be strongly correlated in these compounds. (C) 2011 Elsevier B.V. All rights reserved.

【 授权许可】

Free