MNO2 ADDED PZN-PZT COMPOSITE AND METHOD FOR MANUFACTURING THE SAME

摘要

A method for preparing an MnO2 added PZN-PZT composite is provided to obtain a composite for electronic parts having sufficient dielectric and piezoelectric characteristics including an excellent mechanical quality factor. A method for preparing an MnO2 added PZN-PZT composite comprises the steps of: mixing MnO2 powder with PZN and PZT powder; molding the resultant mixed powder; and sintering the molded product at a low temperature of 1000 deg.C or lower. In the method, MnO2 is added in an amount of 0.1-0.6 wt% based on the weight of the PZN-PZT composite free from MnO2. The raw materials, MnO2, PZN and PZT, are used in such a ratio that the resultant xPZN-(1-x)PZT composite has x ranging from 0.1 to 0.6.