2023   04   az   p.03-06 A.R. Imamaliyev, G.F. Ganizade,
Investigation of volt-farad characteristics of barium titanate particles - oleic acid mixture


In this work, the dielectric properties of a mixture of 300 nm sized monodisperse barium titanate particles and oleic acid are experimentally investigated. The volt-farad characteristic of the thin film of the mixture shows hysteresis property. The coercive field has a high value (2.5 kV/cm) compared to the bulk barium titanate crystal (1.5 kV/cm). And the value of spontaneous polarization of particles (0.3 μC/cm2) is two orders of magnitude lower than that of the bulk crystal (26 μC/cm2). Explanations of the obtained results on the basis of existing models are given.

Keywords: barium titanate, dielectric hysteresis, spontaneous polarization, submicron particles.
PACS: 77.55.fe, 77.80.Dj, 78.20.Ci


Received: 06.10.2023


Institute of Physics Ministry of Science and Education Republic of Azerbaijan, 131 H.Javid ave., Baku, AZ-1143
E-mail: Rahimoglu@mail.ru

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