Journal
JOURNAL OF MATERIALS SCIENCE
Volume 47, Issue 1, Pages 282-288Publisher
SPRINGER
DOI: 10.1007/s10853-011-5796-x
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Funding
- Science and Technology Commission of Shanghai Municipality [10ZR1422300, 09520501000]
- Shanghai Municipal Education Commission [11YZ82, 11YZ83, 11ZZ117]
- Shanghai Normal University [SK201026, PL929]
- National Natural Science Foundation of China [60807036]
- Condensed Physics of Shanghai Normal University [DZL712]
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In this study, the temperature and composition dependence of the dielectric, ferroelectric properties, and polarization current characteristics of the (0.935 - x)Bi0.5Na0.5TiO3-0.065BaTiO(3)-xSrTiO(3) (BNBSTx) with x ranging from 0.02 to 0.22 were systematically investigated. At elevated temperature the BNBSTx solid solution with x < 0.18 underwent a transition from ferroelectric to short-range displacement order and then to non-polar phases. The corresponding transition temperature decreased with Sr content x increasing and the critical composition x was determined to be around 0.18-0.22. In addition, the maximum-permittivity temperature T (m), which exhibited broad peaks with nearly frequency-independent behavior, almost disappeared for x > 0.18, which may be related with the formation of certain sublattices in the complex solid solution.
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