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Original Paper
Compensation effect and magnetostriction in CoCr2−xFexO4
Article first published online: 9 NOV 2012
DOI: 10.1002/pssb.201248470
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Issue
physica status solidi (b)
Early View (Online Version of Record published before inclusion in an issue)
Additional Information
How to Cite
Zhang, H.-g., Wang, W.-h., Liu, E.-k., Tang, X.-d., Li, G.-j., Zhang, H.-w. and Wu, G.-h. (2012), Compensation effect and magnetostriction in CoCr2−xFexO4. Phys. Status Solidi B. doi: 10.1002/pssb.201248470
Publication History
- Article first published online: 9 NOV 2012
- Manuscript Accepted: 5 OCT 2012
- Manuscript Revised: 18 SEP 2012
- Manuscript Received: 24 JUL 2012
- Abstract
- Article
- References
- Cited By
Keywords:
- CoCr2−xFexO4;
- compensation;
- magnetostriction;
- multiferroics
Abstract
The magnetic compensation and magnetostriction properties in Fe-doped CoCr2O4 samples have been investigated. Structural and magnetic measurements imply that the doped Fe3+ ions initially occupy the B1 (Cr) sites when x < 0.1, and then mainly take the A (Co) sites. This behaviour results in a role conversion of magnetic contributors and a composition compensation between two competitively magnetic sublattices at x = 0.1. Temperature-dependent compensation has also been found in the samples with x = 0.1–0.22, with the compensation temperature in the range of 40–104 K. The Fe3+ doping also modulates the exchange interaction of the system and prevents the formation of long-range conical order of spins. The magnetoelectric transition temperature at 23 K in CoCr2O4 is shifted to lower temperature by increasing the dopants. The magnetostriction effect in this system has been observed for the first time. The strain has a maximum value of about 280 ppm at x = 0.4. The magnetostriction is consistent with the behaviour of the two magnetic compensations.