Thermal Expansion Behavior of (Bi0.5Na0.5)Zr1-x Ti x O3 Ceramics |
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| Authors: | Panupong Jaiban Sukanda Jiansirisomboon Anucha Watcharapasorn Rattikorn Yimnirun Ruyan Guo Amar S Bhalla |
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| Affiliation: | 1. Department of Physics and Materials Science, Faculty of Science , Chiang Mai University , Chiang Mai , 50200 , Thailand;2. Department of Physics and Materials Science, Faculty of Science , Chiang Mai University , Chiang Mai , 50200 , Thailand;3. Materials Science Research Center, Faculty of Science , Chiang Mai University , Chiang Mai , 50200 , Thailand;4. School of Physics , Institute of Science, Suranaree University of Technology and NANOTECH-SUT Center of Excellence on Advanced Functional Nanomaterials , Nakorn Ratchasima , 30000 , Thailand;5. Department of Electrical and Computer Engineering, College of Engineering , The University of Texas at San Antonio , San Antonio , Texas , 78249 , USA |
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| Abstract: | (Bi0.5Na0.5)Zr1-xTixO3 with x = 0, 0.1, 0.2, 0.3, 0.4, 0.5 and 0.6 ceramics were fabricated by a conventional sintering technique at 850–950°C for 2 h. From X-ray diffraction study, three regions of different phases were observed in the ceramic system; i.e., orthorhombic phase region (0 ≤ x ≤ 0.2), mixed-phase region (0.3 ≤ x ≤ 0.4), and rhombohedral phase region (0.5 ≤ x ≤ 0.6). The thermal expansion coefficient data indicated the phase transition in the temperature range from 100°C–150°C of the ceramics. The thermal strain curve of all compositions suggested a decrease of local polarization with temperature increment up to the Burns temperature. |
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| Keywords: | BNZT thermal expansion local polarization Burns temperature |
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