Document Detail

Pinning of elastic ferromagnetic/antiferromagnetic interfaces in phase-separated manganites.
MedLine Citation:
PMID:  23032919     Owner:  NLM     Status:  Publisher    
We present a study of the magnetic properties of the Pr(0.5)Sr(0.5-x)Ca(x)MnO(3) manganite (x = 0.1 and 0.2) in the temperature region where phase separation occurs. This state is characterized by the presence of ferromagnetic (FM) inclusions inside an antiferromagnetic (AFM) matrix. The evolution of the magnetization (M) with magnetic field shows the existence of a critical field, H(C), above which M rapidly increases, indicating a sudden expansion of the FM volume against the AFM one. We analyze this behavior and the response of the magnetic susceptibility at low fields (H < H(C)) in terms of a thermally activated motion of pinned FM/AFM elastic interfaces. The pinning mechanism is likely to be related to the martensitic accommodation strain around the magnetic and structural interfaces. From this analysis we estimate the size of the FM domains and the parameters that characterize the pinning potential.
D Niebieskikwiat; R D Sánchez
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-03
Journal Detail:
Title:  Journal of physics. Condensed matter : an Institute of Physics journal     Volume:  24     ISSN:  1361-648X     ISO Abbreviation:  J Phys Condens Matter     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-3     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101165248     Medline TA:  J Phys Condens Matter     Country:  -    
Other Details:
Languages:  ENG     Pagination:  436001     Citation Subset:  -    
Colegio de Ciencias e Ingeniería, Universidad San Francisco de Quito, Quito, Ecuador.
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