Temperature dependence of conventional and effective pyroelectric coefficients for compositionally graded BaxSr1−xTiO3 films

Autor:	Joseph V. Mantese, Adolph L. Micheli, Ratna Naik, Majed Mohammed, Norman W. Schubring, Gregory W. Auner, Antonio B. Catalan
Rok vydání:	1998
Předmět:	Charge pumping Materials science chemistry Ac field Ferroelectric thin films Analytical chemistry General Physics and Astronomy chemistry.chemical_element Platinum Pyroelectric crystal Decomposition Ferroelectricity Pyroelectricity
Zdroj:	Journal of Applied Physics. 84:3322-3325
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.368516
Popis:	Ferroelectric thin films (∼1.2 μm) of BaxSr1−xTiO3 with gradients in composition normal to the growth surface were formed on platinum substrates by metalorganic decomposition. Effective (pseudo) pyroelectric coefficients as large as 0.06 μC/cm2 K have been obtained from these active ferroelectric devices under the application of an ac field (charge pumping). In contrast, a value of only −0.003 μC/cm2 K has been measured for the conventional pyroelectric coefficient.
Databáze:	OpenAIRE
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