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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Possible misleading interpretations on magnetic and transport properties in BiFeO3 nanoparticles caused by impurity phase

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Author(s):
Ramirez, Fabian E. N. [1] ; Pasca, Gabriel A. C. [1] ; Souza, Jose A. [1]
Total Authors: 3
Affiliation:
[1] Univ Fed ABC, BR-09090400 Santo Andre, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Physics Letters A; v. 379, n. 24-25, p. 1549-1553, JUL 31 2015.
Web of Science Citations: 12
Abstract

BiFeO3 nanoparticles were synthesized by a wet chemical method. X-ray powder diffraction indicated single phase samples. The sample Si shows a ferromagnetic-like behavior whereas S2 exhibits an antiferromagnetic-like character with lower magnetic moment and coercive field. Magnetic measurements at high temperature reveal two phase transitions, one related to BiFeO3 and another from alpha-Fe2O3 magnetic impurity in contrast to X-ray diffraction. We observed an increase of remanent polarization, coercive electrical field, and the appearance of interfacial polarization due to higher leakage current density. We discuss how an apparently single phase sample can lead to misleading interpretations in magnetic and dielectric properties. (C) 2015 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 10/18364-0 - Physical properties and critical phenomena in strong correlated systems.
Grantee:Fabian Enrique Nima Ramirez
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 13/16172-5 - Synthesis and characterization of physical properties of nanosized materials
Grantee:José Antonio Souza
Support Opportunities: Regular Research Grants