Study of the Thermal Properties of Ba_{1 - x}Sr_xTiO₃ Thin Films
by the AC Hot-Probe Method

S. T. Davitadze*, S. N. Kravchun*, B. A. Strukov*, S. A. Taraskin*, B. M. Gol’tsman**,
V. V. Lemanov**, and S. G. Shul’man**

* Moscow State University, Vorob’evy gory, Moscow, 119899 Russia

** Ioffe Physicotechnical Institute, Russian Academy of Sciences,
Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia

Received March 28, 2000

Abstract—The heat capacity and heat conductivity of Ba_1–xSr_xTiO₃ (x = 0.2, 0.5, 0.8) polycrystalline films
1.5–2.0 m thick on a massive substrate have been studied by the ac hot-probe method for three-layer systems
(conducting probe–dielectric film–substrate) at temperatures ranging from 100 to 400 K. It is found that the
thermal properties exhibit anomalies in the phase transition range. © 2000 MAIK “Nauka/Interperiodica”.

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