Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/94951
Type: Artigo de periódico
Title: Effects Of Phase Separation On The Magnetization, X-ray Diffraction, And Raman Scattering Of (la1-yndy) 1-xcaxmno3 (y = 0,0.5,1.0;x = 1/3)
Author: Granado E.
Garcia A.
Sanjurjo J.A.
Rettori C.
Torriani I.
Abstract: Dc-magnetization, x-ray diffraction, and Raman-scattering studies in polycrystalline (La1-yNdy)1-xCaxMnO3 (y = 0.0,0.5,1.0, and x = 1/3) samples are presented. The samples with y = 0.5 and 1.0 show complex magnetic states at low temperatures, with a ferromagnetic coupling strength that weakens with increasing y. X-ray measurements show a single crystallographic phase at all temperatures for y=0.5, with lattice parameter anomalies at temperatures related to electronic and magnetic transitions. The presence of high-frequency vibrational modes in Raman-scattering measurements indicates the existence of charge- and orbital-ordered domains for y = 0.5 and 1.0, which are closely related to the antiferromagnetic component identified by the magnetization experiments. The close relationship between results obtained by magnetic, structural, and optical probes is discussed.
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Rights: aberto
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Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0035108575&partnerID=40&md5=d29d526f44f35d9f2f76af59cd9c56f2
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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