Understanding the multiple magnetic structures of the intermetallic compound NdMn1.4Co0.6Si2

JOURNAL OF ALLOYS AND COMPOUNDS

卷:592

Article

Halder, Madhumita¹  Bera, A. K.²  Kumar, Amit²  Keller, L.³  Yusuf, S. M.² 

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

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

[3] Paul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

关键词: Intermetallics;    Magnetic structures;    Neutron diffraction;   

DOI  :  10.1016/j.jallcom.2013.12.247

来源: Elsevier

【 摘 要 】

Magnetic phases for the intermetallic compound NdMn1.4Co0.6Si2 have been investigated at various temperatures by dc magnetization, neutron diffraction and neutron depolarization. Our study shows multiple magnetic phase transitions with temperature (T) over 1.5-300 K. In agreement with dc-magnetization and neutron depolarization results, the temperature dependence of the neutron diffraction patterns shows five distinct regions with different magnetic phases. These temperature regions are (i) T >= 215 K, (ii) 215 K > T >= 50 K, (iii) 50 K > T >= 40 K, (iv) 40 K > T > 15 K, and (v) T <= 15 K. The corresponding magnetic structures are paramagnetic, commensurate collinear antiferromagnetic (AFM-I), incommensurate AFM (AFM-II), mixed ferromagnetic and AFM (FM + AFM-II), and incommensurate AFM (AFM-II), respectively. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

Free