RT Journal Article
T1 Microwave-Assisted Synthesis, Microstructure, and Physical Properties of Rare-Earth Chromites
A1 Prado Gonjal, Jesús de la Paz
A1 Schmidt, Rainer
A1 Romero, Juan-José
A1 Ávila Brande, David
A1 Amador, Ulises
A1 Morán Miguélez, Emilio
AB The full rare-earth (RE) chromites series (RE)CrO3 with an orthorhombic distorted (Pnma) perovskite structure and the isostructural compound YCrO3 can be synthesized through a simple microwave-assisted technique, yielding high-quality materials. Magnetization measurements evidence that the Néel temperature for antiferromagnetic Cr3+–Cr3+ ordering strongly depends on the RE3+ ionic radius (IOR), and a rich variety of different magnetic spin interactions exists. Dielectric spectroscopy on sintered pellets indicates electronic inhomogeneity in all samples as manifested by the presence of at least two dielectric relaxation processes associated with grain boundary and grain interior bulk contributions. X-ray diffraction, Raman spectroscopy, and temperature-dependent dielectric permittivity data do not indicate potential noncentrosymmetry in the crystal or concomitant ferroelectricity. Strong correlations between the magnetic and dielectric properties were not encountered, and microwave-synthesized (RE)CrO3 may not be classified as magnetoelectric or multiferroic materials.
PB American Chemical Society
SN 0020-1669
YR 2012
FD 2012
LK https://hdl.handle.net/20.500.14352/92287
UL https://hdl.handle.net/20.500.14352/92287
LA eng
NO Prado-Gonjal, Jesús, et al. «Microwave-Assisted Synthesis, Microstructure, and Physical Properties of Rare-Earth Chromites». Inorganic Chemistry, vol. 52, n.o 1, enero de 2013, pp. 313-20. https://doi.org/10.1021/ic302000j.
NO Comunidad de Madrid
NO Ministerio de Ciencia e Innovación (España)
DS Docta Complutense
RD 7 abr 2025