Phase development and dielectric responses in PMN-BNT ceramics
(1 - x)Pb(Mg1/3Nb2/3)O3-x(Bi0.5Na0.5)TiO3 ceramics were prepared by the conventional mixed-oxide method. All compositions show complete perovskite solid solutions and the structure to change from cubic to rhombohedral at x = 0.5. The dielectric constant and dielectric loss tangent were measured as a...
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| Main Authors: | , , |
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| Format: | Journal |
| Published: |
2018
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| Subjects: | |
| Online Access: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=77950518458&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/50642 |
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| Institution: | Chiang Mai University |
| Summary: | (1 - x)Pb(Mg1/3Nb2/3)O3-x(Bi0.5Na0.5)TiO3 ceramics were prepared by the conventional mixed-oxide method. All compositions show complete perovskite solid solutions and the structure to change from cubic to rhombohedral at x = 0.5. The dielectric constant and dielectric loss tangent were measured as a function of both temperature and frequency. The results indicated a relaxor ferroelectric behavior for all ceramics. The temperature at maximum of the dielectric constant of PMN-BNT ceramics were seen to increase with increasing BNT content. Moreover, the broadest dielectric peak occurs at x = 0.9, which leads to a morphotropic phase boundary in this system. © 2010 Elsevier Ltd and Techna Group S.r.l. |
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