Metamagnetic transition in geometrically frustrated system TbPd1-xNixAl

摘要

We have carried out measurements of magnetization in geometrically frustrated system TbPd1-xNixAl. A small magnetic field H-c below 1.1 T at 5 K along the magnetically easy c-axis collapses the antiferromagnetic (AF) structure and induces a ferromagnetic (F) structure. The x-dependence of H-c shows a maximum at x approximate to 0.4, while the Neel temperature T-NI and the paramagnetic Curie temperature theta(p) show minima at x,. We discuss the x-dependence of magnetic parameters H-c, T-NI and theta(p) in terms of a simple molecular field model. (c) 2005 Elsevier B.V. All rights reserved.