Numéro
J. Phys. IV France
Volume 07, Numéro C1, Mars 1997
7th INTERNATIONAL CONFERENCE ON FERRITES
Page(s) C1-513 - C1-516
DOI https://doi.org/10.1051/jp4:19971209
7th INTERNATIONAL CONFERENCE ON FERRITES

J. Phys. IV France 07 (1997) C1-513-C1-516

DOI: 10.1051/jp4:19971209

Origin of Elevated Ordering Temperature in MnFe2O4 Nanometer Particles

A.H. Morrish, Z.W. Li and X.Z. Zhou

Department of Physics, University of Manitoba, Winnipeg, MB R3T 2N2, Canada


Abstract
Mössbauer spectra of MnFe2O4 with various particle sizes in a longitudinal 50 kOe magnetic field show that the Fe ion occupancy of the A and B crystallographic sites depends on the particle size. The elevated Néel temperatures with decreasing particle sizes are attributed to an increased iron occupancy on the A sites ; this in turn leads to an increase in the total superexchange interaction.



© EDP Sciences 1997

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.