Low temperature sintering of lead–free (Bi1/2Na1/2)TiO3-SrTiO3-BiFeO3 piezoelectric ceramics by adding excess CuO
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DOI: 10.1007/s10832-018-0151-0
Abstract: This study examined the microstructures, crystal structures, and electrical properties of 0.01 mol CuO–added (1–x)(Bi1/2Na1/2)TiO3–xSrTiO3–2BiFeO3 (BNST100x–2BF, x = 0.20 ~ 0.28) ceramics synthesized at two different sintering temperatures. The sintering temperature of the BNST100x–2BF ceramics could be decreased… read more here.
Keywords: bi1 2na1; cuo; low temperature; temperature ... See more keywords
Dielectric and piezoelectric properties of Bi1/2Na1/2TiO3–SrTiO3 lead–free ceramics
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Electroceramics"
DOI: 10.1007/s10832-018-0161-y
Abstract: This study investigated the microstructure, crystal structure, and electrical properties of (1 − x)Bi1/2Na1/2TiO3–xSrTiO3 (BNST100x; x = 0.20, 0.22, 0.24, 0.26, 0.28, and 0.30) lead−free piezoceramics. The average grain size of BNST100x ceramics decreased with increasing SrTiO3 content. A… read more here.
Keywords: bi1 2na1; lead free; 2na1 2tio3; piezoelectric properties ... See more keywords
Growth and electrical properties of self-flux method grown (1−x)Bi1/2Na1/2TiO3−xBaTiO3 single crystals across the morphotropic phase boundary
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Materials Science: Materials in Electronics"
DOI: 10.1007/s10854-020-03534-0
Abstract: The ferroelectric solid solution 0.94(Bi1/2Na1/2)TiO3–0.06BaTiO3 (BNBT) is a promising material to substitute the environmentally undesired Pb-based ferroelectrics. Lead-free piezoelectric BNBT bulk size single crystals with a composition across the morphotropic phase boundary (MPB) have been… read more here.
Keywords: bi1 2na1; morphotropic phase; single crystals; phase boundary ... See more keywords
Large strain response under low field in SrTiO3 modified Bi1/2Na1/2TiO3-LaFeO3 piezoceramics
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DOI: 10.1016/j.matlet.2019.126793
Abstract: Abstract To further reduce the driving field of Bi1/2Na1/2TiO3-based piezoceramics to meet the requirements for real actuators applications, SrTiO3 modified 0.99Bi1/2Na1/2TiO3-0.01LaFeO3 piezoceramics were synthesized. The 0.79Bi1/2Na1/2TiO3-0.01LaFeO3-0.20SrTiO3 provides the large electrostrains of 405 pm/V at 1.7 kV/mm and… read more here.
Keywords: bi1 2na1; 2na1 2tio3; field; strain response ... See more keywords
Hierarchical domain structures associated with oxygen octahedra tilting patterns in lead-free (Bi1/2Na1/2)TiO3
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DOI: 10.1088/1361-6528/aca030
Abstract: Hierarchical domain structures associated with oxygen octahedra tilting patterns were observed in lead-free (Bi1/2Na1/2)TiO3 ceramics using aberration-corrected high-resolution transmission electron microscopy (HRTEM). Three types of domains are induced by distinct mechanisms: the ‘orientation-domain’ is induced… read more here.
Keywords: bi1 2na1; hierarchical domain; domain; oxygen octahedra ... See more keywords
Composition and temperature dependence of structure and piezoelectricity in (1−x)(K1−yNay)NbO3-x(Bi1/2Na1/2)ZrO3 lead-free ceramics
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DOI: 10.1111/jace.14589
Abstract: Lead-free piezoceramics with the composition (1-x)(K1-yNay)NbO3-x(Bi1/2Na1/2)ZrO3 (KNyN-xBNZ) were prepared using a conventional solid-state route. X-ray diffraction, Raman spectroscopy, and dielectric measurements as a function of temperature indicated the coexistence of rhombohedral (R) and tetragonal (T)… read more here.
Keywords: lead free; bi1 2na1; 2na1 zro3; temperature ... See more keywords