Volume 72, Number 5, December 2005
|Page(s)||809 - 815|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||03 November 2005|
Comparisons of the high- and low-field magnetic anisotropies in a single-crystal manganite and a polycrystalline cobaltite
Department of Physics and Astronomy, University of Manitoba Winnipeg, MB R3T 2N2, Canada
2 Moscow State Steel and Alloys Institute - Lenin Prosp. 4, Moscow 119991, Russia
Accepted: 4 October 2005
The approach to magnetic saturation has been used to estimate the magnetic anisotropy in single-crystal La0.73Ba0.27MnO3 and polycrystalline La0.5Sr0.5CoO3, and these estimates are compared with those found from the measured coercive field. While this analysis confirms the order-of-magnitude discrepancy between these two estimates reported previously and linked, via the enhanced anisotropic magnetostrictive behaviour, to a field-induced low- to high-spin state transition of the Co ion, it also indicates that such discrepancies may be a ubiquitous feature of these transition metal oxides, occurring in systems where orbital instabilities appear unlikely.
PACS: 75.30.Gw – Magnetic anisotropy / 75.30.Cr – Saturation moments and magnetic susceptibilities / 71.70.Ej – Spin-orbit coupling, Zeeman and Stark Splitting, Jahn-Teller effect
© EDP Sciences, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.