Monoclinic phase of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">PbZr</mi></mrow><mrow><mn>0.52</mn></mrow></msub></mrow><mrow><msub><mrow><mi mathvariant="normal">Ti</mi></mrow><mrow><mn>0.48</mn></mrow></msub></mrow><mrow><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></math></span> ceramics: Raman and phenomenological thermodynamic studies

A. G. Souza Filho; K. C. V. Lima; A. P. Ayala; I. Guedes; P. T. C. Freire; J. Mendes Filho; E. B. Araújo; J. A. Eiras

doi:10.1103/PhysRevB.61.14283

Monoclinic phase of ${PbZr}_{0.52} {Ti}_{0.48} O_{3}$ ceramics: Raman and phenomenological thermodynamic studies

A. G. Souza Filho, K. C. V. Lima, A. P. Ayala, I. Guedes, P. T. C. Freire, J. Mendes Filho, E. B. Araújo, and J. A. Eiras

Phys. Rev. B 61, 14283 – Published 1 June 2000

Abstract

This work reports Raman detection of the tetragonal $\to$ monoclinic phase transition in ${PbZr}_{0.52} {Ti}_{0.48} O_{3}$ ceramics near the morphotropic phase boundary at low temperatures. The transition is characterized by changes in the frequency of lattice modes with temperature. The results presented here confirm the previous one recently reported by Noheda et al. [Appl. Phys. Lett. $74,$ 2059 (1999)] using high-resolution synchrotron x-ray powder diffraction technique and dielectric measurements. The stability of the new phase is discussed within the framework of phenomenological Landau-Devonshire theory.

Received 29 November 1999

DOI:https://doi.org/10.1103/PhysRevB.61.14283

Authors & Affiliations

A. G. Souza Filho, K. C. V. Lima, A. P. Ayala^*, I. Guedes, P. T. C. Freire, and J. Mendes Filho

Departamento de Física, Universidade Federal do Ceará, Caixa Postal 6030, Campus do Pici, 60455-760 Fortaleza, Ceará, Brazil

E. B. Araújo and J. A. Eiras

Departamento de Física, Universidade Federal de São Carlos, Caixa Postal 676, 13565-670 São Carlos, SP, Brazil

^*Author to whom correspondence should be addressed. FAX: 55 (85) 2874138. Electronic address: ayala@fisica.ufc.br

Comments & Replies

Comment on “Monoclinic phase of $Pb {Zr}_{0.52} {Ti}_{0.48} O_{3}$ ceramics: Raman and phenomenological thermodynamic studies”

J. Frantti, J. Lappalainen, V. Lantto, S. Nishio, and M. Kakihana

Phys. Rev. B 63, 176102 (2001)

Reply to “Comment on ‘Monoclinic phase of ${PbZr}_{0.52} {Ti}_{0.48} O_{3}$ ceramics: Raman and phenomenological thermodynamic studies’ ”

A. G. Souza Filho, K. C. V. Lima, A. P. Ayala, I. Guedes, P. T. C. Freire, J. Mendes Filho, E. B. Araújo, and J. A. Eiras

Phys. Rev. B 63, 176103 (2001)

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Vol. 61, Iss. 21 — 1 June 2000

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