中国物理B ›› 2013, Vol. 22 ›› Issue (2): 26101-026101.doi: 10.1088/1674-1056/22/2/026101
• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇 下一篇
陈铁锌a, 曹亮a, 张旺a, 韩玉岩a, 郑志远a, 徐法强a, 奎热西b, 钱海杰b, 王嘉鸥b
Chen Tie-Xin (陈铁锌)a, Cao Liang (曹亮)a, Zhang Wang (张旺)a, Han Yu-Yan (韩玉岩)a, Zheng Zhi-Yuan (郑志远)a, Xu Fa-Qiang (徐法强)a, Ibrahim Kurash (奎热西)b, Qian Hai-Jie (钱海杰)b, Wang Jia-Ou (王嘉鸥 )b
摘要: Fe-doped ZnO film has been grown by laser molecular beam epitaxy (L-MBE) and structurally characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), all of which reveal the high quality of the film. No secondary phase was detected. Resonant photoemission spectroscopy (RPES) with photon energies around the Fe 2p-3d absorption edge is performed to detect the electronic structure in the valence band. A strong resonant effect at a photon energy of 710 eV is observed. Fe3+ is the only valence state of Fe ions in the film and the Fe 3d electronic states are concentrated at binding energies of about 3.8 eV and 7 eV~ 8 eV. There are no electronic states related to Fe near the Fermi level. Magnetic measurements reveal a typical superparamagnetic property at room temperature. The absence of electronic states related to Fe near the Fermi level and the high quality of the film, with few defects, provide little support to ferromagnetism.
中图分类号: (X-ray diffraction)