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In this study, the effect of Al 2 O 3  nano-particles on Ba(Zr 0.95 Ti 0.05 )O 3  or BZT ceramics prepared by mixed oxide method with various amount of Al 2 O 3  were investigated. The BZT powders were calcined at 1100 °C for 3   h with heating rate of 5 °C/min. The sintering procedure of BZT + x wt.% Al 2 O 3  nano-particles ( x  =   0.3, 0.7 and 1.0) was carried out at 1300 °C for 2   h with heating rate of 5 °C/min. The results showed that, all XRD patterns of BZT + x wt.% Al 2 O 3  nano-particles ceramics could be matched with a JCPDS data file number 06-0399. The BZT   +   0.7   wt.% Al 2 O 3  nano-particles ceramic was showed the highest density about 5.9   g/cm 3 , Vickers micro-hardness was 8.9   GPa, dielectric constant was 2005 and dielectric loss was 0.01 at 1   kHz frequency.

Effect of Al 2 O 3 nano-particles on Ba(Zr 0.95 Ti 0.05 )O 3 ceramics prepared by mixed oxide method