Lead zirconate titanate ceramics comprise from about 92 to 99.0 weight percent of lead zirconate and lead titanate in ratio from 0.505 to 0.54:0.495 to 0.46 respectively from about 0.5 to about 2 weight percent of one or more fluorides or chlorides of an alkali metal or alkaline earth except francium or radium, and 0.5 to 6 weight percent of one or more oxides of magnesium, barium, chromium, scandium, aluminum, ...
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