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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Dielectric characterization of microwave sintered lead zirconate titanate ceramics

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Goncalves, Mayra D. ; Souza, Flavio L. ; Longo, Elson ; Leite, Edson R. ; Camargo, Emerson R.
Total Authors: 5
Document type: Journal article
Source: CERAMICS INTERNATIONAL; v. 42, n. 13, p. 14423-14430, OCT 2016.
Web of Science Citations: 6

Highly reactive lead zirconate titanate powders (PZT) with different compositions were successfully synthesized by the oxidant-peroxo method (OPM) and used to prepare dense ceramic samples with composition near to the morphotropic phase boundary (MPB) sintered at 1000 degrees C for 2 h using a tubular conventional oven and a commercial microwave system. Crystalline phases were identified in the powder and ceramic samples by X-ray powder diffraction and FT-Raman spectroscopy at room temperature. The fractured surface of the ceramic sample showed a high degree of densification with fairly uniform grain sizes. Dielectric constants measured in the range from 30 to 500 degrees C at different frequencies (1,10 and 100 kHz) indicated a normal ferroelectric behavior regardless of the sintering method. Samples sintered by a microwave radiation (MW) method and composition near to the MPB region showed a maximum dielectric constant of 17.911 and an anomalous high Curie temperature of 465 degrees C. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved. (AU)

FAPESP's process: 09/01587-0 - Synthesis by means of the OPM route of PZT perovskites modified with rare-earth and their characterization using Raman, X ray diffraction and electronic microscopies.
Grantee:Mayra Dancini Gonçalves
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC