Citation: ZHANG Xiao-Chao, FAN Cai-Mei, LIANG Zhen-Hai, HAN Pei-De. Electronic Structures and Optical Properties of Ilmenite-Type Hexa nal ZnTiO3[J]. Acta Physico-Chimica Sinica, ;2011, 27(01): 47-51. doi: 10.3866/PKU.WHXB20110102 shu

Electronic Structures and Optical Properties of Ilmenite-Type Hexa nal ZnTiO3

  • Received Date: 2 August 2010
    Available Online: 17 November 2010

    Fund Project: 国家自然科学基金(20876104, 20771080) (20876104, 20771080)山西省科技攻关项目(20090311082)资助 (20090311082)

  • The electronic structures of ilmenite (IL)-type hexa nal ZnTiO3 were investigated using the generalized gradient approximation (GGA) and local density approximation (LDA) based on density functional theory (DFT). The optical properties of ZnTiO3 were also calculated by the LDA method. The calculated results were compared with experimental data. Results show that the structural parameters obtained by the LDA calculation are rather close to the experimental values. IL-type hexa nal ZnTiO3 is a kind of direct bandgap (Eg=3.11 eV) semiconductor material at the Z point in the Brillouin zone. An analysis of the density of states (DOS) and the Mulliken charge population clearly reveal that the Zn―O bond is a typical ionic bond whereas the Ti―O bond, which is similar to the Ti―O bond in perovskites ATiO3 (A=Sr, Pb, Ba), is covalent in character. Furthermore, the dielectric function, absorption spectrum, and refractive index were obtained and analyzed on the basis of electronic band structures and the DOS for radiation up to 50 eV.

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