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Electronic properties of BaTiO3 (110) polar terminations

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Abstract

The band structures, electron density differences, and surface energies of five different BaTiO3 (110) terminations were investigated by first-principles calculations. According to the calculated results of electron density differences, the bonding characteristics of these considered terminations were discussed. The computational results indicate that the BaTiO-terminated surface is metallic, while the O2-, O-, Ba- and TiO-terminated surfaces are all insulative. Furthermore, the computed surface energies suggest that for the considered terminations, the polarity compensation achieved through surface reconstruction or surface defect is more effective than by change in surface electronic structure. The defected or reconstructed terminations predominate over cleavage and construction of BaTiO3 crystal along (110) direction.

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Authors and Affiliations

  1. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, P. R. China

    Ying Xie & Haitao Yu

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  1. Ying Xie
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  2. Haitao Yu
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Correspondence to Haitao Yu.

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Supported by the National Natural Science Foundation of China(Nos.21173072, 21301052).

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Xie, Y., Yu, H. Electronic properties of BaTiO3 (110) polar terminations. Chem. Res. Chin. Univ. 30, 794–799 (2014). https://doi.org/10.1007/s40242-014-4174-z

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  • DOI: https://doi.org/10.1007/s40242-014-4174-z

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