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Issue 24, 2018
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Direct measurement of Ni incorporation into Fe3O4(001)

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Abstract

The normal incidence X-ray standing wave (NIXSW) technique has been used to follow the evolution of the adsorption geometry of Ni adatoms on the Fe3O4(001)-(√2 × √2)R45° surface as a function of temperature. Two primary surface region sites are identified: a bulk-continuation tetrahedral site and a sub-surface octahedral site, the latter site being preferred at higher annealing temperatures. The ease of incorporation is linked to the presence of subsurface cation vacancies in the (√2 × √2)R45° reconstruction and is consistent with the preference for octahedral coordination observed in the spinel compound NiFe2O4.

Graphical abstract: Direct measurement of Ni incorporation into Fe3O4(001)

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Publication details

The article was received on 19 Apr 2018, accepted on 24 May 2018 and first published on 08 Jun 2018


Article type: Paper
DOI: 10.1039/C8CP02516A
Phys. Chem. Chem. Phys., 2018,20, 16469-16476
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    Direct measurement of Ni incorporation into Fe3O4(001)

    P. T. P. Ryan, Z. Jakub, J. Balajka, J. Hulva, M. Meier, J. T. Küchle, P. J. Blowey, P. K. Thakur, C. Franchini, D. J. Payne, D. P. Woodruff, L. A. Rochford, F. Allegretti, T.-L. Lee, G. S. Parkinson and D. A. Duncan, Phys. Chem. Chem. Phys., 2018, 20, 16469
    DOI: 10.1039/C8CP02516A

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