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18.97.14.84
18.97.14.84
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Regular Paper : First-principles Predictions of Structures and Piezoelectric Properties of PbTiO3 Single Crystal
( Min Chan Kim ) , ( Sang Goo Lee ) , ( Cheeyoung Joh ) , ( Hee Seon Seo )
UCI I410-ECN-0102-2016-560-000774314
This article is 4 pages or less.

Using the various exchange-correlation functionals, such as LDA, GGA-PBE, GGA-PBEsol and GGA-AM05 functionals, first principle studies were conducted to determine the structures of paraelectric and ferroelectric PbTiO3. Based on the structures determined by the various functionals, the piezoelectric properties of PbTiO3 are predicted under the density-functional perturbation theory (DFPT). The present prediction with the various GGA functionals are closer to the experimental findings compared to the LDA values. The present DFT calculations using the GGAPBEsol functional estimate the experimental data more reasonably than the conventional LDA and GGA fucntionals. The GGA-AM05 functional also predicts the experimental data as well as the GGA-PBEsol. The piezoelectric tensor calculated with PBEsol is relatively insensitive to pressure.

1·INTRODUCTION
2·METHODOLOGY
3·RESULTS AND DISCUSSION
4·CONCLUSIONS
ACKNOWLEDGMENT
REFERENCES
[자료제공 : 네이버학술정보]
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