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KMID : 0381920020320020157
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Korean Journal of Microscopy
2002 Volume.32 No. 2 p.157 ~ p.162
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Microstructure Observations in Complex Perovskite (Na1/2 Pr1/2) TiO3)
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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 (Na1/2Pr1/2 TiO3 (NPT) complex perovskite compounds were carried out using X-ray diffractometry and transmission electron microscopy. NPT had not 1:1 chemical ordering of Asite cations but had the antiphase and inphase tilting of oxygen octahedron and the antiparallel shift of cations. Both the antiphase boundaries and the ferroelastic domains were not present in the microstructure. Unidentified second phase was found in the microstructure. The measured dielectric properties were Er=99.6,1 Q fo=1124 GHz1 Tf=-233.64ppm/℃.
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KEYWORD
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Antiphase tilting of oxygen octahedron, Chemical ordering, Complex, Inphase tilting of oxygen octahedron
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