Effect of diamagnetic cobalt on the exchange interactions in the layered lithium iron oxide

Authors
Chappel, E Holzapfel, M Chouteau, G Ott, A
Citation
E. Chappel et al., Effect of diamagnetic cobalt on the exchange interactions in the layered lithium iron oxide, J MAGN MAGN, 226, 2001, pp. 652-654
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN journal
03048853 → ACNP
Volume
226
Year of publication
2001
Part
1
Pages
652 - 654
Database
ISI
SICI code
0304-8853(200105)226:<652:EODCOT>2.0.ZU;2-A
Abstract
Layered LiFeO2 is an antiferromagnet with a Neel temperature T-N = 20 K. Su bstituting Fe with diamagnetic Co3+ surprisingly leads first (up to x = 0.4 ). to an increase of the Weiss temperature theta and then above x = 0.4 to a decrease due to a dilution effect. Magnetic properties are qualitatively interpreted within a mean field model. with ferromagnetic layers coupled an tiferromagnetically. Estimation is given of the ferro- and antiferromagneti c interactions. (C) 2001 Elsevier Science B.V. All rights reserved.