کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1450650 | 988740 | 2007 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Enhanced piezoelectricity due to phase transitions and coexistence in 0.7Pb(Mg1/3Nb2/3)–0.3PbTiO3 single crystal Enhanced piezoelectricity due to phase transitions and coexistence in 0.7Pb(Mg1/3Nb2/3)–0.3PbTiO3 single crystal](/preview/png/1450650.png)
Using scanning electron acoustic microscopy, the spatial distribution of different phases and inhomogeneous electric-field-induced phase transitions have been observed in 0.7Pb(Mg1/3Nb2/3)–0.3PbTiO3 single crystals. The experimental results initially confirm that electric-field-induced phase transitions result in the enhanced piezoelectric properties in relaxor-based ferroelectrics with morphotropic phase boundary compositions. It is also revealed that the regions where phases coexist initially have the highest local piezoelectric property when increasing, decreasing and removing the applied electric-field. Therefore, it is suggested that increasing the volume fraction of the phase coexistence region is a feasible way to further enhance the overall piezoelectricity of PMNT single crystals.
Journal: Acta Materialia - Volume 55, Issue 16, September 2007, Pages 5614–5620