BaTiO3/LaSrMnO3 Heterostructure Grown on Sapphire for Ferroelectric Tunneling Junctions


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Abstract

BaTiO3/LaSrMnO3 (BTO/LSMO) structures with a ferroelectric layer thickness of 10 nm have been formed on r-cut sapphire substrate by means of high-frequency magnetron sputtering. Investigations of the sample structure showed the presence of a crystalline phase, while measurements of electrical properties revealed piezoelectric response of the BTO films. The study of local current–voltage characteristics showed dependence of the sample resistance on the prehistory of voltage application as determined by ferroelectric hysteresis of the BTO layer.

About the authors

A. G. Gagarin

St. Petersburg Electrotechnical University LETI

Author for correspondence.
Email: AGGagarin@gmail.com
Russian Federation, St. Petersburg, 197376

A. V. Tumarkin

St. Petersburg Electrotechnical University LETI

Email: AGGagarin@gmail.com
Russian Federation, St. Petersburg, 197376

E. N. Sapego

St. Petersburg Electrotechnical University LETI

Email: AGGagarin@gmail.com
Russian Federation, St. Petersburg, 197376

T. S. Kunkel’

Peter the Great St. Petersburg Polytechnic University; Ioffe Physical Technical Institute, Russian Academy of Sciences

Email: AGGagarin@gmail.com
Russian Federation, St. Petersburg, 195251; St. Petersburg, 194021

V. M. Stozharov

The Herzen State Pedagogical University of Russia

Email: AGGagarin@gmail.com
Russian Federation, St. Petersburg, 191186

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