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Combination of structural and microstructural effects in the multiferroic response of Nd and Ti co-doped BiFeO3 bulk ceramics

AuthorsGumiel, Carlos; Jardiel, Teresa ; Bernardo, M. S. ; Villanueva, Pablo G.; Urdiroz, Unai; Cebollada, F.; Aragó, C.; Caballero Cuesta, Amador ; Peiteado, Marco
rare-earth doping
R3c to Pbam transition
Rhombohedral distortion
Piezoelectric properties
Magnetic properties
Issue Date2019
PublisherPergamon Press
CitationCeramics International 45: 5276- 5283 (2019)
Abstract[EN] Different dopant strategies are currently under investigation in order to overcome the many problems that limit the commercial viability of BiFeO-based ceramic devices. Neodymium substitution onto the A site of the perovskite lattice provokes significant changes in the crystal structure of the parent material which can derive in enhanced multiferroic properties, but the conductivity in the bulk system is still too high. Titanium doping on the other hand generates a distinctive micro-nanostructure in the consolidated ceramics which can largely increase the dc resistivity of the whole material. A combination of these two effects is here attempted in a co-doping approach which evidences that the microstructural effect caused upon Ti-doping, provoking a reduction of the leakage currents, eventually allows the co-doped material to capitalize on the unique piezoelectric and magnetic properties structurally triggered by the Nd-doping.
Publisher version (URL)http://dx.doi.org/10.1016/j.ceramint.2018.11.225
Identifiersdoi: 10.1016/j.ceramint.2018.11.225
issn: 0272-8842
e-issn: 1873-3956
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(ICV) Artículos
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