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蓝色氧化钨的光电子能谱研究
《物理学报》1990年第5期809-813,共5页谢侃 齐上雪 伍乃娟 林彰达 
本文用光电子能潜技术对蓝色氧化钨的表面价态进行了一系列研究。结果表明:蓝色氧化钨并不是单一价态的氧化钨,而是由W^(+5)和W^(+6)两种价态组成。氩离子刻蚀,真空高温处理都是一个失氧还原过程,也是钨由高价态向低价态的转变过程。同...
关键词：氧化钨 光电子能谱 价态 蓝色 
Co淀积到γ-Fe_2O_3表面的光电发射谱研究
《物理学报》1989年第5期859-863,共5页伍乃娟 齐上雪 曹建明 谢侃 
在γ-Fe_2O_3表面蒸镀不同厚度Co,观察到低Co覆盖度,Co具有很大活力与O_2结合,而使Fe还原.在θ=0.2—0.8时,表面上形成类 CoFe_2O_4.Co覆盖度进一步增加,Fe在表面偏析,Co开始形成第二层,破坏了形成这种氧化物的条件.因此,这种铁钴氧化...
关键词：CO淀积 Γ-FE2O3 磁粉 光电发射谱 
XPS STUDY OF SUPERCONDUCTOR Ba_2YCu_3O_(7-δ) BY VACUUM ANNEALING
《Chinese Science Bulletin》1989年第4期269-273,共5页胡典文 伍乃娟 沈电洪 齐上雪 
Project supported by the National Natural Science Foundation of China & Academia Sinics.
Discovery of the superconductivity in Ba-Y-Cu-O system above liquid nitrogen transition temperature has stimulated the extensive studies. The properties of superconducting material depend on the temperature and atmosp...
关键词：high T_c SUPERCONDUCTOR PHOTOELECTRON spectroscopy vacuum ANNEALING Ba2YCu3O7-8. 
DOUBLE PEAK STRUCTURE OF O_(18) IN PHOTOEMISSION SPECTRA OF Bi-Sr-Ca-O HIGH-Tc SUPERCONDUCTORS
《Chinese Physics Letters》1989年第6期261-264,共4页LIU Zhenxiang XIE Kan WU Naijuan SHEN Dianhong LIN Zhangda 
supported by The National Center for Research and Development on Superconductivity.
The double peak structure of O_(18) in photoemission spectra of Bi-Sr-Ca-Cu-O superconductor is studied by XPS,and compared with that of SrCO_(3).The result indicates that the double peak structure of O_(18) spectra i...
关键词：SPECTRA SUPERCONDUCTOR 
ANHARMONIC EFFECT ON ORIENTATIONAL ORDERING IN ADSORBED INCOMMENSURATE MONOLAYERS
《Chinese Physics Letters》1986年第12期553-556,共4页FENG Kean WU Naijuan ZHAO Lihua 
the Science Fund of the Chinese Academy of Sciences。
The orientational ordering in adsorbed incommensurate monolayers is discussed in an anharmonic approach.A nonlinear relationship is predicted between the orientation of the monolayer relative to the substrate and the ...
关键词：parameter. MONOLAYER adsorbed 
A STUDY OF INCOMMENSURATE STRUCTURE ON Mo(100) SURFACE BY DOMAIN MODULATION MODEL
《Chinese Physics Letters》1986年第6期261-264,共4页FENG Kean WU Naijuan ZHAO Lihua 
This work was supported by the Science Fund of the Chinese Academy of Sciences.
By introducing mass density waves,we have determined the positions and intensities of a quartet of spots around the(±1/2,±1/2)positions on a clean Mo(100)surface at low temperature.lt is shown that the Mo(100)-C(2x2...
关键词：TEMPERATURE Mo(100) POSITIONS 
QUANTITATIVE EVALUATION OF ISLAND SEPARATION AND ISLAND SIZE DISTRIBU TIONS IN CHEMISORPTION
《Chinese Physics Letters》1987年第11期509-512,共4页ZHAO Lihua LUO Enzhou WU Naijuan FENG Kean 
supported by the Science Fund of the Chinese Academy of Sciences。
The two-dimensional autocorrelation function of island separations for commensurately adsorbed overlayers is evaluated and used to calculate the angular profiles of the diffracted beams from arbitrary distribution of ...
关键词：surface adsorbed ARBITRARY 
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