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KMID : 0381920020320030257
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Korean Journal of Microscopy
2002 Volume.32 No. 3 p.257 ~ p.263
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Microstructural Characterizations on (Na1/2Pr1/2)TiO3 Ceramics
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Lee Hwack-Joo
Ryu Hyun
Park Hyun-Min
Cho Yang-Koo
Nahm Sahn
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Abstract
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Microstructural investigations of (L 1/2 P1/2TiO3 (LPT) complex perovskite compounds were carried out using X-ray diffractometry and transmission electron microscopy. LPT has not only the ordering of A-site cation deficiencies but also has the antiphase and inphase tilting of oxygen octahedron and the antiparallel shift of cations. Both the antiphase boundaries and the ferroelastic domains are present in the microstructure. Spinodal decomposition is found in the microstructure. The measured dielectric properties were Er=84.6, Q fo=776 GHz,Tf=-233.66ppm/℃.
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KEYWORD
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iphase tilting of oxygen octahedron , Complex perovskite , Inphase tilting of oxygen octahedron , Ordering of A-site deficiencies
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