Document Detail


Spin amplitude modulation driven magnetoelectric coupling in the new multiferroic FeTe2O5Br.
MedLine Citation:
PMID:  19905598     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
The magnetic and ferroelectric properties of the layered geometrically frustrated cluster compound FeTe2O5Br were investigated with single-crystal neutron diffraction and dielectric measurements. An incommensurate transverse amplitude modulated magnetic order with the wave vector q=(1/2,0.463,0) develops below T(N)=10.6(2) K. Simultaneously, a ferroelectric order due to exchange striction involving polarizable Te4+ lone-pair electrons develops perpendicular to q and to Fe3+ magnetic moments. The observed magnetoelectric coupling is proposed to originate from the temperature dependent phase difference between neighboring amplitude modulation waves.
Authors:
M Pregelj; O Zaharko; A Zorko; Z Kutnjak; P Jeglic; P J Brown; M Jagodic; Z Jaglici??; H Berger; D Arcon
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Publication Detail:
Type:  Journal Article     Date:  2009-09-30
Journal Detail:
Title:  Physical review letters     Volume:  103     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2009 Oct 
Date Detail:
Created Date:  2009-11-12     Completed Date:  2010-01-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  147202     Citation Subset:  -    
Affiliation:
Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia.
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