JIN Qiang, HUANG Jin-liang, YANG Liu-shuan, LI Qian. Effect of La-doped on Microstructure and Dielectric Properties of (Bi1.5Zn0.5)(Ti1.5Nb0.5)O7 Ceramics[J]. Development and Application of Materials, 2005, 20(2): 16-19. DOI: 10.19515/j.cnki.1003-1545.2005.02.005
Citation:
JIN Qiang, HUANG Jin-liang, YANG Liu-shuan, LI Qian. Effect of La-doped on Microstructure and Dielectric Properties of (Bi1.5Zn0.5)(Ti1.5Nb0.5)O7 Ceramics[J]. Development and Application of Materials, 2005, 20(2): 16-19. DOI: 10.19515/j.cnki.1003-1545.2005.02.005
JIN Qiang, HUANG Jin-liang, YANG Liu-shuan, LI Qian. Effect of La-doped on Microstructure and Dielectric Properties of (Bi1.5Zn0.5)(Ti1.5Nb0.5)O7 Ceramics[J]. Development and Application of Materials, 2005, 20(2): 16-19. DOI: 10.19515/j.cnki.1003-1545.2005.02.005
Citation:
JIN Qiang, HUANG Jin-liang, YANG Liu-shuan, LI Qian. Effect of La-doped on Microstructure and Dielectric Properties of (Bi1.5Zn0.5)(Ti1.5Nb0.5)O7 Ceramics[J]. Development and Application of Materials, 2005, 20(2): 16-19. DOI: 10.19515/j.cnki.1003-1545.2005.02.005
The structure and dielectric properties of (Bi1.5Zn0.5)(Ti1.5Nb0.5)O7-based ceramics with Bi3+ substituted by La3+ were investigated.(Bi1.5-xLaxZn0.5)(Zn0.5Nb1.5)O7samples were prepared by conventional method.The X-ray diffraction and SEM were used to analyze the microstructure.The La-doped samples held primarily pyrochlore single-phase on the whole field, and its stable range was determined by the tolerance factor (RA/RB values).With the increase of amount of La3+ substitution, crystal cell parameters showed a trend from ascent to descent.The dielectric properties varied with the microstructure.The dielectric properties of BLZNT-x samples exhibited as:ε=130~170,tanδ=0.35-0.9×10-3at 1 MHz,and the frequency characteristics at high end (＞100kHz) were optimized through the La-doping.
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