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ID 18813
file
creator
Dubenko, I. S.
Gaidukova, I. Yu
Granovsky, S. A.
Markosyan, A. S.
Roy, S.
Ali, N.
abstract
The temperature- and field-induced magnetic phase transitions in pseudoternary systems Tb1–xYxMn2Ge2 and Tb1–xYxMn2Si2, which are characterized by a separate magnetic ordering of the Mn and Tb subsystems, have been studied on strongly textured samples by magnetization and thermal expansion measurements. In the concentration region 0.4<x<1.0, where the Mn moments are ordered only, the magnetic structure is antiferromagnetic. The magnetic ordering in the Tb subsystem is accompanied by a transformation of the Mn magnetic structure. As a result, the compounds show a spontaneous magnetization. This transition is of a first-order type. In both systems the transition temperature for the Tb subsystem TC (Tb) decreases linearly with increasing Y concentration and goes to zero at about x=0.40. Canted phases and field-induced first-order transitions into the collinear phase have been observed in both systems below this temperature. It is concluded that the f–d exchange interaction is the primary factor governing the value of TC (Tb) .
journal title
Journal of Applied Physics
volume
Volume 93
issue
Issue 10
start page
8185
end page
8187
date of issued
2003-05-15
publisher
American Institute of Physics
issn
0021-8979
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2003 American Institute of Physics.
relation url
department
Graduate School of Science