Journal of the Korean Ceramic Society (한국세라믹학회지)
- Volume 32 Issue 9
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- Pages.967-976
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- 1995
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- 1229-7801(pISSN)
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- 2234-0491(eISSN)
Micro-Macro Domain Switching and Thermoelastic Martensitic Transformation in $PbZrO_3$ -doped $Pb(Ni_{1/3}Nb_{2/3})O_3-PbTiO_3$ System
$PbZrO_3$ 가 첨가된 $Pb(Ni_{1/3}Nb_{2/3})O_3-PbTiO_3$ 계의 미소-거시 분역 반전과 열탄성 마르텐사이트 변태
Abstract
The possiblity of the existence of a spontaneous relaxor-normal ferroelectric transition was proposed and examined using 1~5 mol% PbZrO3-doped Pb(Ni1/3Nb2/3)O3-PbTiO3 (PNN-PT) systems having tetragonal symmetry at rom temperature. On cooling, the system with 60mol% Pb(Ni1/3Nb2/3)O3 underwent a spontaneous transition from a relaxor to a normal ferroelectric state. A microscopic examination demonstrates that the relaxornormal ferroelectric transition corresponds to a micro-macro domain switching accompanied with thermoelastic martensitic transformation. The long-range macrodomains below the transition temperature were characterized by twinlike 90
Keywords
- Micro-macro domain switching;
- Relaxor-normal ferroelectric transition;
- Thermoelastic martensitic transformation;
- Twinlike $90^{\circ}$macrodomains;
- $Pb(Ni_{1/3}Nb_{2/3})O_3