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陈丽娜 , 皮雳 , 谭舜 , 屈哲
低温物理学报
我们用X射线光电子能谱、以及相关的电性和磁性测量研究了Sr2Fe1-xMnxM0O6(0 关键词: 双钙态矿 , 隧道磁电阻 , X射线光电子能谱
关键词: 双钙态矿 , 隧道磁电阻 , X射线光电子能谱
Rui XIONG
材料科学技术(英文)
The electronic structure of the quasi-two-dimensional (2D) semiconducting molybdenum purple bronze Bi0.2MoO3 was presented by X-ray photoemission spectroscopy. The valence band of Bi0.2MoO3 is made up of Opπ non-bonding level, π and σ bonding bands. The peak at 1.5 eV and the shoulder at 0.5 eV in the forbidden band may be formed from the non-bonding dxy orbitals of some Mo atoms. The O1s core-level spectrum demonstrates the presence of two inequivalent bonds of oxygen ions in Bi0.2MoO3. Bi4f core-level spectrum shows two bonding characters of Bi atoms in bismuth molybdenum single crystal. Mo3d core-level spectrum confirms two kinds of valence states of Molybdenum (Mo+5 and Mo+6). Ar+ ion irradiation induces more significant distortion of MoO6 octahedra.
关键词: Bi0.2MoO3 single crystal , null , null