Please use this identifier to cite or link to this item:
|Title:||Effect of lanthanum substitution on microstructure and electrical properties of (Bi<inf>0.5</inf>Na<inf>0.5</inf>)<inf>1-1.5x</inf>La<inf>x</inf>Ti<inf>0.41</inf>Zr<inf>0.59</inf>O<inf>3</inf>ceramics|
|Keywords:||Chemical Engineering;Materials Science|
|Abstract:||Bismuth sodium zirconate (BNZ) based ceramics with a composition of (Bi0.5Na0.5)1-1.5xLaxTi0.41Zr0.59O3where x = 0, 0.005, 0.01, 0.02 and 0.03 were prepared by a solid-state mixed oxide method and sintered at the temperature of 900°C for 2 h. All the samples had relative density between 91 and 97% of their theoretical values. Phase analysis using X-ray diffraction indicated single rhombohedral or pseudo-cubic perovskite structure. SEM showed that addition of La caused the average grain size of the BNTZ ceramics to decrease as well as an improvement of sample density. Dielectric properties at room temperature measured at 10 kHz indicated that addition of La increased the dielectric constant. The results of ferroelectric characterization also revealed that adding La caused a decrease in coercive field without affecting the remanent polarization. © 2011 Elsevier Ltd and Techna Group S.r.l.|
|Appears in Collections:||CMUL: Journal Articles|
Files in This Item:
There are no files associated with this item.
Items in CMUIR are protected by copyright, with all rights reserved, unless otherwise indicated.