RT Journal Article
T1 Structural and physical properties of microwave synthesized orthorhombic perovskite erbium chromite ErCrO3
A1 Prado Gonjal, Jesús de la Paz
A1 Schmidt, Rainer
A1 Ávila Brande, David
A1 Amador, Ulises
A1 Morán Miguélez, Emilio
AB Rare-earth chromite ErCrO3 powder was synthesized from metal nitrate precursors using microwave synthesis. (Micro-) structural characterizations were performed using X-ray diffraction, Rietveld refinement, High Resolution Transmission Electron Microscopy and Electron Micro-Diffraction. Magnetization vs. temperature measurements revealed anti-ferromagnetism with TNeel ≈ 135 K. An anti-ferrimagnetic moment of ≈0.4 μB was determined from magnetization vs. applied field measurements. Temperature dependent impedance spectroscopy (IS) indicated 3 dielectric relaxation processes: electrode interface, grain boundary and bulk. The intrinsic bulk activation energy was found to be 0.27 eV and the dielectric permittivity ɛr was ≈23 in excellent agreement with Clausius–Mossotti predictions and showed no perceptible temperature dependence. This and the low ɛr value suggested that ErCrO3 is a dielectric rather than ferroelectric compound. IS measurements with applied dc bias revealed the signs of an unconventional type of Schottky barrier at the metallic Au electrode/ceramic ErCrO3 interface.
PB Elsevier
SN 0955-2219
YR 2012
FD 2012
LK https://hdl.handle.net/20.500.14352/92285
UL https://hdl.handle.net/20.500.14352/92285
LA eng
NO Prado-Gonjal, Jesús, et al. «Structural and Physical Properties of Microwave Synthesized Orthorhombic Perovskite Erbium Chromite ErCrO3». Journal of the European Ceramic Society, vol. 32, n.o 3, marzo de 2012, pp. 611-18.  https://doi.org/10.1016/j.jeurceramsoc.2011.10.002.
NO Comunidad de Madrid
NO Ministerio de Ciencia e Innovación (España)
DS Docta Complutense
RD 18 may 2025