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Magnetic structure and thermal conductivity of FeVO4 multiferroic
, B. Ramchandran, Y.K. Kuo, G. Lawes
Published in Institute of Electrical and Electronics Engineers Inc.
2015
Volume: 51
   
Issue: 11
Abstract
We investigated magnetic and thermal transport properties of bulk FeVO4 multiferroic systems using temperature-dependent magnetic and thermal conductivity measurements. These studies exhibit long-range magnetic ordering with two successive ferroic orderings at 22 and 15 K. The temperature dependence of thermal conductivity shows a phonon-assisted peak at ∼ 30 K with an additional anomaly near ∼22 K. The Debye-Einstein phonon model fits suggest that the main contribution to thermal conductivity is coming from the acoustic phonons at low temperatures, whereas optical phonon contribution is coming at high temperatures. The onset of thermal conductivity at 22 K is associated with antiferromagnetic ferroic ordering and suggests strong coupling between magnetic ordering and phonons in FeVO4 multiferroic. © 1965-2012 IEEE.
About the journal
JournalData powered by TypesetIEEE Transactions on Magnetics
PublisherData powered by TypesetInstitute of Electrical and Electronics Engineers Inc.
ISSN00189464
Open AccessNo