Valence State of Mn-Doped BiFeO3–BaTiO3 Ceramics Probed by Soft X-ray Absorption Spectroscopy
Valence State of Mn-Doped BiFeO3–BaTiO3 Ceramics Probed by Soft X-ray Absorption Spectroscopy
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DOI：
10.1143/apex.1.011502
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发表时间：
2008-01
影响因子：
2.3
通讯作者：
T. Higuchi;W. Sakamoto;N. Itoh;T. Shimura;T. Hattori;T. Yogo
中科院分区：
文献类型：
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作者：
T. Higuchi;W. Sakamoto;N. Itoh;T. Shimura;T. Hattori;T. Yogo
用软X射线吸收光谱(XAS)研究了掺锰BiFeO_3-BaTiO_3陶瓷的价态。掺锰BiFeO_3-BaTiO_3具有Fe3+和Ti4+的价态，而BiFeO_3和掺锰的BiFeO_3具有Fe~(2+)和Fe~(3+)的混合价态。掺锰BiFeO_3-BaTiO_3的Mn2p-xAs峰位于比掺锰BiFeO_3更低的能级，对应于Mn3+的价态。这些结果可能表明，掺锰BiFeO_3-BaTiO_3的Fe~(3+)价态是通过BaTiO_3中的Ti~(3+)的3d态向Fe~(3+)态的电荷转移而稳定的。
The valence state of Mn-doped BiFeO3–BaTiO3 ceramics has been probed by soft X-ray absorption spectroscopy (XAS). Mn-doped BiFeO3–BaTiO3 has valence states of Fe3+ and Ti4+, although BiFeO3 and Mn-doped BiFeO3 have mixed valence states of Fe2+ and Fe3+. The Mn 2p-XAS peak of Mn-doped BiFeO3–BaTiO3 locates at a lower energy side than that of Mn-doped BiFeO3 that corresponds to the Mn3+ valence state. These findings may indicate that the Fe3+ valence state of Mn-doped BiFeO3–BaTiO3 is stabilized by charge transfer from the Mn 3d state to the Fe 3d state through the Ti 3d state in BaTiO3.