Sol-gel synthesis of Pb-free thin-film nanomaterials for electrocaloric devices
E V AbrashovaSaint-Petersburg Electrotechnical University LETI, Pr. Popova 5, St. Petersburg, 197376 RussiaИ. Е. КононоваSaint-Petersburg Electrotechnical University LETI, Pr. Popova 5, St. Petersburg, 197376 RussiaВ. А. МошниковSaint-Petersburg Electrotechnical University LETI, Pr. Popova 5, St. Petersburg, 197376 RussiaС. С. НалимоваSaint-Petersburg Electrotechnical University LETI, Pr. Popova 5, St. Petersburg, 197376 Russia
2014en
ABI
Abstract
Lead-free BaxCa(1-x)TiO3, BaSnyTi(1-y)O3 and composite BaxCa(1-x)TiO3 / BaSnyTi(1-y)O3 thin films were synthesized by a sol-gel technique. A large electrocaloric effect is expected in the obtained films. Atomic force microscopy studies revealed that the thin films consists of ellipsoidal objects enclosed by an amorphous matrix. The electrical properties of synthesized nanomaterials were investigated by impedance spectroscopy.
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