RT Journal Article
T1 New Fe3+/ Cr3+ Perovskites with Anomalous Transport Properties: The Solid Solution LaxBi1–xFe0.5Cr0.5O3 (0.4 ≤ x ≤ 1)
A1 Villafuerte-Castrejón, Maria Elena
A1 García-Guaderrama, Marco
A1 Fuentes, Lelia
A1 Prado Gonjal, Jesús de la Paz
A1 González Fuente, Ana María
A1 de la Rubia, Maria Angeles
A1 García-Hernández, Maite
A1 Morán, Eduardo
AB In this work, the sol–gel synthesis, structural characterization, and transport properties of a new solid solution of the general formula LaxBi1–xFe0.5Cr0.5O3 (0.4 ≤ x ≤ 1) are presented. The solubility limit x has been determined and variation of the lattice parameters measured through profile fitting. The cell parameters, space group, and atomic positions, as obtained by the Rietveld refinement of X-ray diffraction data, are reported. This analysis and electron diffraction studies as well do not reveal any evidence of Fe/Cr ordering. Regarding the transport properties, magnetic and electric characterizations are described. The electrical response with the temperature and frequency has been studied, and a “positive temperature coefficient” for the resistivity has been found for temperatures between 270 and 400 °C. The magnetic behavior is striking because, for all materials studied, zero-field-cooling curves appear above field-cooling ones, an anomalous feature that is interpreted as being due to complex ferromagnetic/antiferromagnetic interactions in the B perovskite sublattice.
SN 0020-1669
YR 2011
FD 2011
LK https://hdl.handle.net/20.500.14352/94020
UL https://hdl.handle.net/20.500.14352/94020
LA eng
NO M. E. Villafuerte-Castrejón, M. García-Guaderrama, L. Fuentes, J. Prado-Gonjal, A. M. González, M. Á. de la Rubia, M. García-Hernández, and E. MoránInorganic Chemistry 2011 50 (17), 8340-8347DOI: 10.1021/ic2008864
NO Ministerio de Ciencia, Innovación y Universidades (España)
NO Comunidad de Madrid
NO European Commission
DS Docta Complutense
RD 26 feb 2026