Ferryl (Fe=O) termination of the hematite α-Fe2O3(0001) surface

Lemire, Céline; Bertarione, Serena; Zecchina, Adriano; Scarano, Domenica; Chaka, Anne; Shaikhutdinov, Shamil; Freund, Hans-Joachim

doi:10.1103/PhysRevLett.94.166101

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Ferryl (Fe=O) termination of the hematite α-Fe₂O₃(0001) surface

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Lemire, Céline
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Shaikhutdinov, Shamil
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Freund, Hans-Joachim
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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引用

Lemire, C., Bertarione, S., Zecchina, A., Scarano, D., Chaka, A., Shaikhutdinov, S., & Freund, H.-J. (2005). Ferryl (Fe=O) termination of the hematite α-Fe₂O₃(0001) surface. Physical Review Letters, 94(16), 166101–1-166101–4. doi:10.1103/PhysRevLett.94.166101.

引用: https://hdl.handle.net/11858/00-001M-0000-0011-08E1-7

要旨

Using scanning tunneling microscopy and infrared reflection absorption spectroscopy we have observed that the alpha-Fe2O3(0001) surface exhibits ferryl (Fe=O) groups, which may coexist with domains of the Fe-terminated surface. We therefore fully support ab initio calculations recently reported in the literature [W. Bergmeyer, H. Schweiger, and E. Wimmer, Phys. Rev. B 69, 195409 (2004)]. The close similarity to the results on the (0001) surfaces of Cr2O3 and V2O3 strongly suggests that the M=O termination under certain oxygen pressure conditions is the most stable for the close-packed surfaces of transition metal oxides with the corundum structure.