KERAMIKZUSAMMENSETZUNG.

摘要

A ceramic composition particularly useful for use in thin film magnetic heads, the composition having the general formula: xNaO.yNb2O5 wherein the ratio x/y is at least 0.74 but less than 1.00, the composition having a coefficient of thermal expansion closely matching that of the magnetic alloy film with which it is used so as to prevent separation of the two upon changes in temperature.