Prado Gonjal, Jesús de la PazSchmidt, RainerÁvila Brande, DavidAmador, UlisesMorán Miguélez, Emilio2024-01-102024-01-102012Prado-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.2011.10.002.0955-221910.1016/j.jeurceramsoc.2011.10.002https://hdl.handle.net/20.500.14352/92285Rare-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.engAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/journal articlehttps://doi.org/10.1016/j.jeurceramsoc.2011.10.002open access546Microwave processingMicrostructureX-ray diffractionDielectric propertiesQuímica inorgánica (Química)Materiales2303 Química Inorgánica2210.28-1 Preparación y Caracterización de Materiales Inorgánicos