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Título: | Influence of Ni and Co doping on the stability of the ErMnO 3 perovskites processed by mechanochemical synthesis |
Autor: | Moure Arroyo, Alberto CSIC ORCID ; Hungría, Teresa CSIC; Castro, Alicia CSIC ORCID ; Galy, Jean CSIC; Peña, Octavio; Martínez, I.; Tartaj, Jesús CSIC; Moure Jiménez, Carlos CSIC | Palabras clave: | Magnetic materials Nanostructures Ceramics |
Fecha de publicación: | 2012 | Editor: | Elsevier BV | Citación: | Ceramics International 38: 1507- 1513 (2012) | Resumen: | [EN] Mechanosynthesis in tungsten carbide vessels and planetary mill is an effective method to prepare materials with ErMnO 3 derived compositions and perovskite-type structure. In this work, the effect of the doping with low contents of Co and Ni cations on the stability of such oxides is studied. The obtained perovskites are highly distorted for all compositions. The transition to the more stable hexagonal phase occurs at lower temperatures for Co-doped materials, due to the presence of Co 3+ cations that do not involve any change of oxidation state for Mn 3+ Jahn-Teller cations. Spark Plasma Sintering (SPS) was carried out at 900 °C or 950 °C and 120 MPa to obtain dense ceramics, keeping the perovskite-type structures. The magnetic properties of the obtained materials are also shown. © 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved. | Versión del editor: | https://doi.org/10.1016/j.ceramint.2011.09.034 | URI: | http://hdl.handle.net/10261/345485 | DOI: | 10.1016/j.ceramint.2011.09.034 | Identificadores: | issn: 0272-8842 e-issn: 1873-3956 |
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