Electrocaloric properties of epitaxial strontium titanate films

Zhang, J. and Mısırlıoğlu, Burç and Alpay, S. P. and Rossetti, G. A., Jr. (2012) Electrocaloric properties of epitaxial strontium titanate films. Applied Physics Letters, 100 (22). ISSN 0003-6951 (Print) 1077-3118 (Online)

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Official URL: http://dx.doi.org/10.1063/1.4721668


The electrocaloric (EC) response of strontium titanate thin films is computed as a function of misfit strain, temperature, electric field strength, and electrode configuration using a nonlinear thermodynamic theory. For films in a capacitor configuration on compressive substrates, the transition between paraelectric and strain-induced ferroelectric tetragonal phases produces a large adiabatic temperature change, Delta T = 5K, at room temperature for electric field changes Delta E = 1200 kV/cm. For films on tensile substrates, the transition between the paraelectric and strain-induced ferroelectric orthorhombic phases can also be accessed using inter-digitated electrodes (IDEs). The maximum EC response occurs for IDEs with a [110] orientation.

Item Type:Article
Additional Information:Article Number: 222909
Subjects:Q Science > QC Physics
ID Code:19144
Deposited By:Burç Mısırlıoğlu
Deposited On:04 Jul 2012 15:12
Last Modified:31 Jul 2019 11:07

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