Mn-Doped BaTiO3 Ceramics: Thermal and Electrical Properties for Multicaloric Applications
authors Semenov, A; Dedyk, A; Mylnikov, I; Pakhomov, O; Es'kov, A; Anokhin, A; Krylov, V; Burovikhin, A; Pavlova, Y; Tselev, A; Kholkin, A
nationality International
author keywords BaTiO3; electrocalorics; magnetocalorics; phase transition; specific heat
abstract Multiferroic materials are widely used in microelectronics because they are sensitive to elastic, magnetic, and electric fields and there is an intrinsic coupling between them. In particular, transition metal-doped BaTiO3 is considered as a viable multiferroic because of the simultaneous presence of ferroelectricity and magnetism. In this work, we study the electrical and thermal properties of Mn-doped BaTiO3 ceramics that can be used for multicaloric applications. We found that Mn doping leads to the broadening and shifting of the phase transition accompanied with simultaneous decrease of latent heat and entropy. Mn doping causes a decrease in the bulk resistivity while contact resistance remains intact. Doped ceramics can withstand high electric fields (up to 40 kV/cm) and exhibit linear I-V characteristics followed by the Schottky limited current in contrast to earlier observations. As such, these ceramics are promising for multicaloric applications.
publisher MDPI
isbn 1996-1944
year published 2019
volume 12
issue 21
digital object identifier (doi) 10.3390/ma12213592
web of science category Materials Science, Multidisciplinary
subject category Materials Science
unique article identifier WOS:000502798800133
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journal impact factor 3.057
5 year journal impact factor 3.424
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