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Modification of Ferroelectric Properties of TGS Crystals Grown under a dc Electric field

Published online by Cambridge University Press:  18 March 2011

G. Arunmozhi
Affiliation:
Departamento de Física, Universidade do Minho, Campus de Gualtar 4710-057 Braga, Portugal
E. Nogueira
Affiliation:
Departamento de Física, Universidade do Minho, Campus de Gualtar 4710-057 Braga, Portugal
E.de Matos Gomes
Affiliation:
Departamento de Física, Universidade do Minho, Campus de Gualtar 4710-057 Braga, Portugal
S. Lanceros-Mendez
Affiliation:
Departamento de Física, Universidade do Minho, Campus de Gualtar 4710-057 Braga, Portugal
R. Costa
Affiliation:
Departamento de Física, faculdade de Ciências e Tecnologia, Universidade de Coimbra, 3000 Coimbra, Portugal
A. Criado
Affiliation:
Departamento de Física de la Materia Condensada, Universidad de Sevilla, Apartado 1065, 41080 Sevilla, Spain
J. F. Mano
Affiliation:
Departamento de Engenharia de Polímeros, Universidade do Minho, Campus de Azurém 4800-058 Guimarães, Portugal
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Abstract

Ferroelectric triglycine sulphate crystals have been grown under the influence of an intense electric field of 6×104 V/m. Relative to crystals grown under ambient conditions (TGS) the crystals grown under the electric field (TGS-E) display a dielectric permittivity a factor of two lower. Significant differences are observed in the Curie-Weiss behavior of the ferroelectric phase, in the x-ray diffraction patterns and in the differential calorimetry measurements.

Type
Research Article
Copyright
Copyright © Materials Research Society 2001

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References

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