Armenian Journal of Physics

I-V Characteristics of Pt-Ba0.25Sr0.75 TiO3-Pt Thin Films with Oxygen Vacancies

Buniatyan, V.V. and Melikyan, G.S. and Hovsepyan, R.K. and Papoyan, A.V. (2016) I-V Characteristics of Pt-Ba0.25Sr0.75 TiO3-Pt Thin Films with Oxygen Vacancies. Armenian Journal of Physics, 9 (2). pp. 120-129. ISSN 1829-1171

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Abstract

A new model for calculation of leakage/injection current in ferroelectric perovskite (BST, PZT) metal-ferroelectric-metal structure thin film is considered under the assumption that: a) a high concentration of oxygen vacancies is presence in the interfaced region of metal-ferroelectric contacts, which creates corresponding electron trap levels in the band gap of ferroelectric, and b) the dielectric permittivity of ferroelectric materials have nonlinear dependence on applied electric field. The results of proposed model are compared with the experiment and a good agreement was received.

Item Type:Article
Subjects:Physics > 73.Electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures
Physics > 81.Materials science
ID Code:822
Deposited By:Prof. Vladimir Aroutiounian
Deposited On:01 May 2016 13:44
Last Modified:01 May 2016 13:44

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