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Microstructural Characterizations on $(Na_{1/2}Pr_{1/2})TiO_3$ Ceramics  

Lee, Hwack-Joo (New Materials Evaluation Center, Korea Research Institute of Standards and Science)
Ryu, Hyun (New Materials Evaluation Center, Korea Research Institute of Standards and Science)
Park, Hyun-Min (New Materials Evaluation Center, Korea Research Institute of Standards and Science)
Cho, Yang-Koo (New Materials Evaluation Center, Korea Research Institute of Standards and Science)
Nahm, Sahn (Division of Materials and Metallurgical Engineering, Korea University)
Publication Information
Applied Microscopy / v.32, no.3, 2002 , pp. 257-263 More about this Journal
Abstract
Microstructural investigations of $(Li_{1/2}Pr_{1/2})TiO_3$ (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 ${\varepsilon}_r=84.6,\;Q\;{\Large f}_o=776\;GHz,\;{\tau}_{f}=-233.66ppm/^{\circ}C$.
Keywords
Antiphase tilting of oxygen octahedron; Complex perovskite; Inphase tilting of oxygen octahedron; Ordering of A-site deficiencies;
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Times Cited By KSCI : 1  (Citation Analysis)
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