Show simple item record

dc.contributor.authorMartínez Viviente, Félix Lorenzo 
dc.contributor.authorHinojosa Jiménez, Juan 
dc.contributor.authorDoménech Asensi, Ginés 
dc.contributor.authorFernández Luque, Francisco Jesús 
dc.contributor.authorZapata Pérez, Juan Francisco 
dc.contributor.authorRuiz Merino, Ramón Jesús 
dc.contributor.authorPardo Mata, Lorena
dc.identifier.citationMARTÍNEZ VIVIENTE, Félix Lorenzo et al. Dielectric constant tunability at microwave frequencies and pyroelectric behavior of lead-free submicron-structured (Bi0.5Na0.5)1-xBaxTiO3 ferroelectric ceramics. En: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 60, n. 8, p. 1595-1602, 2013. ISSN: 0885-3010.es_ES
dc.description.abstractIn this article we show that the dielectric constant of lead-free ferroelectric ceramics based on the solid solution (1-x)(Bi0.5Na0.5)TiO3-xBaTiO3, with compositions at or near the morphotropic phase boundary (MPB), can be tuned by a local applied electric field. Two compositions have been studied, one at the MPB, with x=0.06 (BNBT6), and another one towards the BNT side of the phase diagram, with x=0.04 (BNBT4). The tunability of the dielectric constant is measured at microwave frequencies between 100 MHz and 3 GHz by a non-resonant method and simultaneously applying a DC electric field. As expected, the tunability is higher for the composition at the MPB (BNBT6), reaching a maximum value of 60 % for an electric field of 900 V/cm, compared with the composition below this boundary (BNBT4), which saturates at 40 % for an electric field of 640 V/cm. The high tunability in both cases is attributed to the fine grain and high density of the samples, which have a submicron homogeneous grain structure with grain size of the order of a few hundred nanometers. Such properties make these ceramics attractive for microwave tunable devices. Finally, we have tested these ceramics for their application as infrared pyroelectric detectors and we have found that the pyroelectric figure of merit is comparable to traditional lead containing pyroelectrics.es_ES
dc.description.sponsorshipThis work was supported by Ministerio de Ciencia e Innovación of Spain (TIN2009-14372-C03-02), Fundación Séneca (15303/PI/10), and CSIC (PIE 201060E069).es_ES
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)es_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.titleDielectric constant tunability at microwave frequencies and pyroelectric behavior of lead-free submicron-structured (Bi0.5Na0.5)1-xBaxTiO3 ferroelectric ceramicses_ES
dc.subjectFerroelectric ceramicses_ES
dc.subjectDielectric permittivityes_ES
dc.subjectMicrowave tunable deviceses_ES
dc.subjectPyroelectric infrared sensorses_ES
dc.subject.unesco2202.10 Radioondas y Microondases_ES

Files in this item


This item appears in the following Collection(s)

Show simple item record

Atribución-NoComercial-SinDerivadas 3.0 España
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 España