Mn-Doped BaTiO3Ceramics: Thermal and Electrical Properties for Multicaloric Applications

Autor: Oleg Pakhomov, Yulia Pavlova, Alexander A. Semenov, Alexander Anokhin, A. V. Es’kov, Anton Burovikhin, Andrei Kholkin, Alexander Tselev, Vasiliy Krylov, A. I. Dedyk, I. L. Mylnikov
Rok vydání: 2019
Předmět:
BATIO3 CERAMICS
BaTiO3
Phase transition
Materials science
PHASE TRANSITIONS
BULK RESISTIVITY
Magnetism
PHASE TRANSITION
lcsh:Technology
electrocalorics
MANGANESE
MANGANESE COMPOUNDS
Electric field
Microelectronics
General Materials Science
Multiferroics
MICROELECTRONICS
lcsh:Microscopy
THERMAL AND ELECTRICAL PROPERTIES
lcsh:QC120-168.85
MAGNETOCALORICS
CERAMIC MATERIALS
lcsh:QH201-278.5
Condensed matter physics
lcsh:T
business.industry
SPECIFIC HEAT
Contact resistance
Doping
magnetocalorics
Ferroelectricity
ELECTRIC FIELDS
BARIUM TITANATE
BATIO3
lcsh:TA1-2040
phase transition
ELECTROCALORICS
lcsh:Descriptive and experimental mechanics
lcsh:Electrical engineering. Electronics. Nuclear engineering
specific heat
lcsh:Engineering (General). Civil engineering (General)
HIGH ELECTRIC FIELDS
IV CHARACTERISTICS
business
lcsh:TK1-9971
Zdroj: Materials
Volume 12
Issue 21
Materials, Vol 12, Iss 21, p 3592 (2019)
ISSN: 1996-1944
Popis: Multiferroic materialsare 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 consideredas 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 Schottkylimited current in contrast to earlier observations. As such, these ceramics are promising for multicaloric applications. © 2019 by the authors. Russian Science Foundation, RSF: № 18-19-00512 Funding: This work was supported by the Russian Science Foundation (grant № 18-19-00512).
Databáze: OpenAIRE
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