AGING BEHAVIOR OF NB-DOPED PB(ZR0.52TI0.48)O3 CERAMICS

Siripong  Somwan; Piyachon  Ketsuwan; Athipong Ngamjarurojana

Authors

Siripong Somwan Faculty of Science and Agricultural Technology, Rajamangala University of Technology Lanna, Chiang Mai 50300, Thailand.
Piyachon Ketsuwan Division of Physics, School of Science, University of Phayao, Phayao 56000, Thailand.
Athipong Ngamjarurojana Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.

Keywords:

Ferroelectric, optical interferometry, soft doped PZT, aging

Abstract

In this work, Pb(Zr0.52Ti0.48)O3 PZT ceramics with the addition of x mole% Nb2O5, wherex = 0.1, 0.2, 0.3, 0.4, 0.5, and 0.6, were prepared by a mixed-oxide technique and solid-statesintering. Poled samples were heated at 500 and 600C for temperature treatment, and then left for 30 and 60 days aging. To observe the aging behavior, the strain and polarization were measured by modified interferometry technique with a Sawyer- Towercircuit at the time after heat treatment and aging. The results showed that 600C was required to release the poling effect. The accompanied electrical loss due to heat treatment disappeared when the samples were aged and there was, therefore, less spontaneous polarization.

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