Piezoelectricity in the {AxA`(1-x)}BO3 and A{BxB`(1-x)}O3 Ceramic Alloys

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ABO3 perovskite ceramics due to their chemical nature and size difference of the cations A (where A is a divalent metal) and B (where B is a tetravalent metal) have non-centro-symmetric polymorphs and display significant piezoelectric properties. One path to improve piezoelectric properties is through alloying these materials. In order to assess the feasibility of this, we have investigated the structure, elastic and piezoelectric properties of prototypical cubic and tetragonal phases of ABO3 bulk ceramic oxides and their alloys: {AxA`(1-x)}BO3 and A{BxB`(1-x)}O3 by density functional theory based first-principle calculations. Using 2x2x2 super cells as models in our calculations, we have covered the full alloying range by varying concentration, x, in steps of 12.5%. We have created models using Ba, Sr, Pb, for A and A`, and Ti, Zr for B and B` both in cubic and tetragonal super cells. Here, we will report the structural and piezoelectric properties of tetragonal phases of ABO3 bulk ceramic oxides and their alloys.

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Edited by:

A.G. Mamalis, Masato Enokizono, Antonios Kladas, T. Sawada, Mustafa Güden and Prof. Mustafa M. Demir

Pages:

34-38

Citation:

B. Akgenc et al., "Piezoelectricity in the {AxA`(1-x)}BO3 and A{BxB`(1-x)}O3 Ceramic Alloys", Materials Science Forum, Vol. 915, pp. 34-38, 2018

Online since:

March 2018

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$38.00

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