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arXiv · 1605.06869

Soft X-ray Absorption Spectroscopy Study of Multiferroic Bi-substituted Ba(1-x)Bi(x)Ti(0.9)Fe(0.1)O(3)

Hyun Woo Kim·D. H. Kim·Eunsook Lee·Seungho Seong·Deok Hyeon Kim·B. W. Lee·Y. Ko·J. -Y. Kim·J. -S. Kang
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Abstract

The electronic structures of multiferroic oxides of Ba(1-x)Bi(x)Ti(0.9)Fe(0.1)O(3) (0 < x < 0.12) have been investigated by employing photoemission spectroscopy and soft x-ray absorption spectroscopy (XAS). The measured Fe and Ti 2p XAS spectra show that Ti ions are in the Ti4+ states for all x and that Fe ions are Fe2+-Fe3+ mixed-valent for x > 0. The valence states of Fe ions are found to be nearly trivalent for x=0, and decreases with increasing x from being nearly trivalent (v(Fe)~ 3) for x=0 to v(Fe)~ 2.6 for x=0.12. The valence states of both Ti and Ba ions do not change for all x < 0.12. Based on the obtained valence states of Fe ions, the electronic and magnetic properties of Ba(1-x)Bi(x)Ti(0.9)Fe(0.1)O(3) are explored.

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Hyun Woo Kim, D. H. Kim, Eunsook Lee, Seungho Seong, Deok Hyeon Kim, B. W. Lee, Y. Ko, J. -Y. Kim, J. -S. Kang. 2016-05-23. Soft X-ray Absorption Spectroscopy Study of Multiferroic Bi-substituted Ba(1-x)Bi(x)Ti(0.9)Fe(0.1)O(3). https://doi.org/10.3938/jkps.69.361

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