On the two-phase magnetic state in a CuxZn1-xCr2Se4 cation-substituted chalcogenide spinel

Authors
Balaev, AD Zhukov, EG Ivanova, NB Kazak, NV Ovchinnikov, SG Popel, EP
Citation
Ad. Balaev et al., On the two-phase magnetic state in a CuxZn1-xCr2Se4 cation-substituted chalcogenide spinel, PHYS SOL ST, 43(6), 2001, pp. 1089-1092
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICS OF THE SOLID STATE
ISSN journal
10637834 → ACNP
Volume
43
Issue
6
Year of publication
2001
Pages
1089 - 1092
Database
ISI
SICI code
1063-7834(200106)43:6<1089:OTTMSI>2.0.ZU;2-W
Abstract
The region of the concentration magnetic phase transition in a CuxZn1-xCr2S e4 chalcogenide spinel in which the substituted ion concentration x smoothl y varies from 0.1 to 0.2 with a step of 0.02 is thoroughly investigated. An anomalous behavior of the Curie temperature is observed. This anomaly is a ssociated with the nucleation of ferromagnetically ordered microregions in the vicinity of Cr ions with an intermediate valence and subsequent long-ra nge magnetic ordering at a critical Cu concentration in the range 0.12 < x( c) < 0.14. The possible coexistence of ferro- and antiferromagnetism in the same temperature range is revealed. (C) 2001 MAIK "Nauka/Interperiodica".