Journal
RSC ADVANCES
Volume 5, Issue 110, Pages 90508-90514Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra17781b
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Funding
- National Natural Science Foundation of China [51372110, 51402144, 51302124, 51302025, 51502127]
- National High Technology Research and Development Program of China [2013AA030801]
- Science and Technology Planning Project of Guangdong Province, China [2013B091000001]
- Independent innovation and achievement transformation in Shandong Province special, China [2014CGZH0904]
- Shandong Province Higher Educational Science and Technology Program [J14LA11, J14LA10]
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The structure, electric field-induced strain (EFIS), polarization and piezoelectric response of lead-free Sr3FeNb2O9-modified (Bi1/2Na1/2)(0.935)Ba0.065TiO3 (BNBT-xSFN, with x = 0-0.012) ceramics were investigated. XRD patterns show that all compositions have a pure perovskite structure and SFN effectively diffused into the BNBT lattice during sintering to form a solid solution. A large EFIS of 0.35% was obtained at the critical composition of x = 0.009 which corresponds to a normalized strain (S-max/E-max) of 583 pm V (1). A maximum value of piezoelectric constant (254 pC N-1) was obtained for x = 0.006. These results show our research can benefit the developments of Bi1/2Na1/2TiO3 ceramics and widen their range of applications.
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