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| Two step synthesis and characterization of high purer PMN-PT composite powder |
| YU Qiushan1,2, SU Yuchang1, RABIGUL•Tursun1, TAN Jiang1, ZHANG Jing1 |
1. School of Materials Science and Engineering, Central South University, Changsha 410083, China;
2. School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 434023, China |
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Abstract High purity PMN-PT composite powders was synthesized by two step method at lower temperature, two step synthesis method was used. Firstly, MgO or 4MgCO3·Mg(OH)2·4H2O were mixed with Nb2O5 to get MgNb2O6. Secondly, 2PbCO3·Pb(OH)2 and TiO2 were put into MgNb2O6, or Pb(Ac)2·3H2O and TiO2 were put into MgNb2O6, to synthesize PMN-PT powder. The phase composition of the product was qualitatively analyzed by XRD. The morphologies of the powders and the thermal behavior of precursor were analyzed by SEM and TG-DSC. The effects of raw material system, synthesis temperature and milling time on the purity of product were investigated. The results show that under the same technological conditions, the purity of MgNb2O6 prepared by 4MgCO3·Mg(OH)2·4H2O is higher. Using Pb(Ac)2·3H2O as Mg source is benefit to improve the purity of PMN-PT. The lower synthesis temperature and higher product purity of PMN-PT powders can be obtained by using Pb(Ac)2·3H2O crystal with lower melting point and gradually thermal decomposition as raw materials.
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Received: 12 August 2017
Published: 12 July 2019
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2018, Vol. 23 
