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《Piezoelectrics & Acoustooptics》 2002-05
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Preparation of Pb(Sc~ 0.5 Ta~0.5 )O~3 Relaxor Ferroelectric Ceramic Fine Powders Via Mechanochemical Method

ZHANG Ming fu 1,2 ,YANG Li jian 2,WANG Jing 3,WANG Biao 2,WANG Shi zhong 3 (1 Lab.of Solid State Microstructure Physics,Nanjing University,Nanjing 210093,China; 2 Center for Composite Materils and Optic electric Technology Center,Harbin In  
Fine powders of single phase Pb(Sc 0 5 Ta 0 5 )O 3 relaxor ferroelectric ceramic were synthesized by mechanochemical method.Heat treatment analyzed reaction mechanism of starting materials and the powder as milled for 5 h.The results indicated that single phase Pb(Sc 0 5 Ta 0 5 )O 3 with the particle size of 30~40 nm was obtained with milling for 7 h,and the size is consisted with the value calculated from Scheerer.The heat treatment results of as milled 5 hours shown that the pyrochloride phase was not avoided under the milling process,that of the starting powders exhibited the pyrochloride phase with little amount still existed in the product that calcined at 1 350 °C for 4 h.The comparison experiments suggested that the starting powders must be milled adequately in order to synthesize single phase Pb(Sc 0 5 Ta 0 5 )O 3
【CateGory Index】: TM282
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