Patent ID: 8647737

Claim:
A crack-free dielectric comprising: a substrate; a dielectric layer overlaying the substrate, whereby the layer is formed by depositing a first dielectric precursor sol-gel layer having a thickness from about 0.3 μm to about 1.0 μm on a substrate, heating the first dielectric precursor sol-gel layer at a low temperature from about 100° C. to about 200° C. for a low temperature heating time from about 1 minute to about 30 minutes, increasing the temperature from about 275° C. to about 325° C. in a prepyrolysis step and maintaining the temperature at the prepyrolysis temperature for a prepyrolysis period of time, increasing the temperature from about 375° C. to about 425° C. in a first pyrolysis step and maintaining the temperature at the first pyrolysis temperature for a first pyrolysis period of time, increasing the temperature from about 425° C. to about 475° C. in a second pyrolysis step and maintaining the temperature at the second pyrolysis temperature for a second pyrolysis period of time, increasing the temperature from about 600° C. to about 800° C. for a period of time to crystallize at least one layer; repeating the deposition step, initial heating step, pyrolyzing and crystallization steps to form a dielectric precursor layer having a total thickness from about 1.5 μm to about 20.0 μm on the substrate to form a crystallized dielectric layer.