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Ferroelectrics Volume 368, 2008 - Issue 1
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SECTION H: PIEZOELECTRICS AND ACTUATORS

Determination of the Pyroelectric Coefficient for (Bi0.5Na0.5)0.935Ba0.065TiO3 Piezoelectric Ceramics

R. RodrÍguez-Ruiz Centro de Investigación y de Estudios Avanzados del IPN, Electrical Engineering Department, Bioelectronic Section, Av. IPN 2508, Col. San Pedro Zacatenco, C.P. 07360, México, D.F., Mexico
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R. González-Ballesteros Centro de Investigación y de Estudios Avanzados del IPN, Electrical Engineering Department, Bioelectronic Section, Av. IPN 2508, Col. San Pedro Zacatenco, C.P. 07360, México, D.F., Mexico; Universidad Politécnica de Pachuca, Carretera Pachuca-Cd. Sahagún, km 20, Ex-Hacienda de Santa Bárbara, C.P. 43841, Zempoala, Hidalgo, México
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A. Flores-Cuautle Centro de Investigación y de Estudios Avanzados del IPN, Electrical Engineering Department, Bioelectronic Section, Av. IPN 2508, Col. San Pedro Zacatenco, C.P. 07360, México, D.F., Mexico
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E. Suaste-Gómez Centro de Investigación y de Estudios Avanzados del IPN, Electrical Engineering Department, Bioelectronic Section, Av. IPN 2508, Col. San Pedro Zacatenco, C.P. 07360, México, D.F., Mexico
Pages 216-223 | Received 17 Aug 2007, Accepted 11 Mar 2008, Published online: 20 Sep 2010
 
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Abstract

In this work, the dielectric and pyroelectric characteristics of the (Bi 0.5 Na 0.5 ) 0.935 Ba 0.065 TiO 3 lead-free ferroelectric ceramic are studied in order to determine its usefulness for infrared detectors. Dielectric constant and pyroelectric coefficient of these ceramics were measured. The ceramics present high values of the dielectric constant at its Curie temperature at 425°C. The pyroelectric coefficient was determined by the Byer-Roundy method. The relationship for pyroelectric detectors was calculated and compared with other materials used as infrared detectors.

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