Journal
SURFACE SCIENCE
Volume 608, Issue -, Pages 146-153Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.susc.2012.10.004
Keywords
Ab initio calculations; Electronic properties; Surface energy; Surface rumpling; Perovskites
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Funding
- European Social Fund's Doctoral Studies, Internationalization program DoRa
- European Union through the European Regional Development Fund (Centre of Excellence Mesosystems: Theory and Applications) [TK114]
- European Social Fund [GLOFY054MJD]
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The (001) surfaces of cubic perovskite CaZrO3 with two different terminations (CaO and ZrO2) were studied using the first principles density functional theory. The structural, electronic and energetic properties of each surface have been calculated; the differences between the properties of the bulk and slab materials were identified. In particular, changes of the band gap and density of states distributions from atoms located in different layers were revealed. Calculations of the surface rumpling, effective Mulliken charges, and surface energy were compared with data existing for other cubic perovskites. It was also shown that the surface with the CaO-termination has a lower energy than with the ZrO2 termination. (C) 2012 Elsevier B.V. All rights reserved.
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