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A Study of 90°Ferroelectric Domains in Potassium Tantalate Niobate Crystals by Means of Transmission Electron Microscopy |
| XU Huiping1;LI Qi1;SHEN Guangjun2;WANG Luchun1,
SHA Zhenshun3;ZHU Jianming1;FENG Duan1;WANG Jiyang4
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| 1National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210008
2Analysis Center, Southeastern University, Nanjing 210008
3Department of Physics, Nanjing University, Nanjing 210008
4Institute of Crystal Materials, Shandong University, Jinan 250100
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| Cite this article: |
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XU Huiping, LI Qi, SHEN Guangjun et al 1993 Chin. Phys. Lett. 10 298-301 |
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Abstract By flux method, potassium tantalate niobate crystals with 46% Nb contents were prepared. In this material 90°a-type domains with (011) and (01 ī) walls were observed by a transmission electron microscope, and the nature of fringe patterns associated with these domain walls was analysed. According to the extinction rules for the domain walls, the displacement vector R along < 01 ī > direction can be determined. Finally, using a selected area electron diffraction method, we examined the crystallographic character of these 90°domains and defined the ratio of lattice parameters c to a.
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| Keywords:
61.90.+d
73.40.-c
77.80.-e
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Published: 01 May 1993
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| PACS: |
61.90.+d
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(Other topics in structure of solids and liquids; crystallography)
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73.40.-c
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(Electronic transport in interface structures)
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77.80.-e
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(Ferroelectricity and antiferroelectricity)
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