首页|Dielectric and Ferroelectric Properties of (Cr,Nb)-doped Lead Zirconate Titanate Ceramics

Dielectric and Ferroelectric Properties of (Cr,Nb)-doped Lead Zirconate Titanate Ceramics

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The 3 mol% Nb_2O_5 doped Pb(Zr_(0.52)Ti_(0.48))O_3 with addition of 1-3 mol% Cr_2O_3 prepared via the solid-state reaction technique have been investigated. The XRD shows that a sample is primarily in both tetragonal and rhombohedral phases coexist and the amount of rhombohedral phase decreases that is due to the donor (Nb) dopant reduces the number of oxygen vacancies and leads to a lower amount of rhombohedral phase. The maximum dielectric constant tend to decrease with increasing Cr doping concentration from 0.1 to 1 mol%. Further increase in Cr concentration, the maximum dielectric constant increase dramatically. The hysteresis loop measurements, the electrical coercivity and the remnant polarization do not show a systematic trend at low concentration of Cr doping. It is possibly due to the partial solubility of Cr doping. The observations clearly indicate the hardening behavior at higher concentration because of more solubility of Cr.

PZTco-dopeddielectric propertiesferroelectric properties

Piyachon Ketsuwan、Anurak Prasatkhetragarn、Supon Ananta、Chien-Chih Huang、David P. Cann、Rattikorn Yimnirun

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School of Science and Technology, Naresuan University Phayao, Phayao 56000, Thailand

Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand

School of Mechanical, Industrial, and Manufacturing Engineering, Oregon State University, Corvallis OR 97331, USA

School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000 Thailand

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2010

10.4028/www.scientific.net/KEM.421-422.385

Key engineering materials

Key engineering materials

ISSN：1013-9826
年,卷(期)：2010.421/422
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