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Ferroelectrics Volume 253, 2001 - Issue 1
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Session 5: Relaxor ferroelectrics

Ferroelectric domains and their dynamics under electric field in PMNT single crystals

Gui-Sheng Xu Laboratory of Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P.R. China
,
Dong-Lin Li Laboratory of Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P.R. China
,
Hao-Su Luo Laboratory of Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P.R. China
,
Hai-Qing Xu Laboratory of Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P.R. China
,
Ping-Chu Wang Laboratory of Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P.R. China
&
Zhi-Wen Yin Laboratory of Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P.R. China
Pages 39-46 | Received 02 Jun 2000, Published online: 26 Oct 2011
 
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Abstract

Domain configurations in PMNT76/24∼67/33 single crystals have been observed using polarizing microscopes. Unpoled PMNT76/24 crystals exhibit disordered cubic phases mixed with ferroelectric rhombohedral phases. With increasing PbTiO3 content from PMN to PMNT67/33, the crystals undergo change from microdomains, irregular macrodomains to regular macrodomains. On the other hand, the transformation from irregular to regular macrodomains can be induced by electric field, which is related to the direction of electric field. The polarization switching can be shown through domain configurations.

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