Method of preparing barium titanate ceramics with flattened temperature characteristics

Claim 1

THE METHOD OF MAKING BARIUM TITANATE CERAMIC IN WHICH THE CRYSTALLITES APPEAR CUBIC AT TEMPERATURS BELOW THE CURIE POINT AS OBSERVED BY X-RAY DIFFRACTION WHICH COMPRISES PREPARING A CRYSTALLINE BARIUM TITANATE SALT OF AN ORGANIC ACID, CALCINING THE SALT TO DRIVE OFF THE ACID RADICAL AND TO PRODUCE A FINE POWDER IN WHICH THE CRYSTALLITES APPEAR CUBIC AT TEMPERATURES BELOW THE CURRIE POINT AS OBSERVED BY X-RAY DIFFRACTION, ADDING TO THE CALCINED POWDER IN THE RANGE OF .1% TO 3% BY WEIGHT METAL SELECTGED FROM THE GROUP CONSISTING OF IRON, NICKEL, COBALT, MAGNESIUM, CALCIUM, AND MANGANESE TO INHIBIT GROWTH DURING FIRING OF THE BARIUM TITANATE CRYSTALLITES TO THE FORM WHICH APPEARS TETRAGONAL AT TEMPERATURES BELOW THE CURIE POINT AS OBSERVED BY X-RAY DIFFRACTION, AND FIRING THE MIXTURE TO PRODUCE A DENSE CERAMIC IN WHICH THE CRYSTALLITES APPEAR CUBIC AT TEMPERATURES BELOW THE CURIE POINT.