UNSPECIFIED (1998) Commensurate magnetic structures in Er91.6%Tm8.4%. In: International Conference on Magnetism, JUL 27-AUG 01, 1997, CAIRNS, AUSTRALIA.

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Abstract

We have studied the magnetic behaviour of the alloy Er91.6%Tm8.4% using ultrasound, SQUID and neutron-scattering measurements. We have found that below 40 K the magnetic structure is very similar to the magnetic phase observed between 52 and 18 K in Er. However, high-order commensurate structures? which are stable over no more than approximately 2 K in pure Er, are stable over temperature ranges of up to 17 K in this alloy. Indeed, we find that in the region 26-18 K the magnetic structure is characterised by two modulation vectors. q = 2/7c* and q = 4/15c*. We suggest that, on cooling, the modulation of the basal plane and c-axis components of the magnetisation become decoupled at 26 K, with the modulation of the basal plane component remaining locked into a value of q(b) = 2/7c*, while the modulation of the c-axis component decreases towards a value of q(c) = 4/15c*. At 18 K the magnetic structure reverts to a single q structure with q = 4/15c*. (C) 1998 Elsevier Science B.V. All rights reserved.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) Q Science > QC Physics
Journal or Publication Title:	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Publisher:	ELSEVIER SCIENCE BV
ISSN:	0304-8853
Date:	January 1998
Volume:	177
Number:	Part 2
Number of Pages:	2
Page Range:	pp. 1014-1015
Publication Status:	Published
Title of Event:	International Conference on Magnetism
Location of Event:	CAIRNS, AUSTRALIA
Date(s) of Event:	JUL 27-AUG 01, 1997
URI:	http://wrap.warwick.ac.uk/id/eprint/15962

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