Abstract
The pyroelectric properties of Bi4Ti3O,12(BIT)-based ceramics have been investigated from the viewpoint of their application to pyro-sensor materials. Here, BIT ceramics are added with Nb2O5 for improving the electrical properties. Furthermore, lanthanum modified BIT ceramics with composition of (Bi4-xLax)Ti3O12+1.0mol% Nb2O5(x=0 ∼ 1.10) are also studied for obtaining higher pyroelectric coefficient in the wide temperature range because Tc of this system is decreasing with increase of the La2O3. Therefore, the compositionally graded materials in the BIT based ceramics may be expected to obtain much improved pyroelectric properties.
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