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High-resolution transmission electron microscopy of structural changes at and near surfaces of ZnTe crystals
Ning, XG; AvalosBorja, M; Ye, HQ
Corresponding AuthorNing, XG()
1996
Source PublicationJOURNAL OF APPLIED PHYSICS
ISSN0021-8979
Volume79Issue:1Pages:125-128
AbstractStructural changes on and near surfaces of ZnTe crystals were observed by the surface profile imaging method in a high-resolution transmission electron microscope (HRTEM) with 200 kV accelerating voltage. It was found that ZnO particles form under electron irradiation on surfaces originally covered with a thin amorphous layer. For amorphous coverages thicker than about 7 nm, ZnO particles were not observed. Under the ZnO particles, 2X1 and 2x2 superstructures (about 10 nm in size) were often found in the ZnTe matrix. These superstructures can be described as a metastable Zn2Te3 having a structure similar to the ordered Ga2Te3 structure. This change can be accomplished by Considering the diffusion of zinc from the ZnTe matrix to the surface to form the oxide and evaporation of tellurium out of the surface, leaving behind a matrix with an altered stoichiometry. The HRTEM computer-simulated images for the proposed Zn2Te3 superstructure matched very well the experimental images. The 2x1 and 2x2 superstructures corresponded to the HRTEM images of the new Zn2Te3 structure viewed along its [211] and [100] directions, respectively. (C) 1996 American Institute of physics,
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
WOS IDWOS:A1996TN21100019
PublisherAMER INST PHYSICS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/126667
Collection中国科学院金属研究所
Corresponding AuthorNing, XG
AffiliationCHINESE ACAD SCI, MET RES INST, ATOM IMAGING SOLIDS LAB, SHENYANG 110015, PEOPLES R CHINA
Recommended Citation
GB/T 7714
Ning, XG,AvalosBorja, M,Ye, HQ. High-resolution transmission electron microscopy of structural changes at and near surfaces of ZnTe crystals[J]. JOURNAL OF APPLIED PHYSICS,1996,79(1):125-128.
APA Ning, XG,AvalosBorja, M,&Ye, HQ.(1996).High-resolution transmission electron microscopy of structural changes at and near surfaces of ZnTe crystals.JOURNAL OF APPLIED PHYSICS,79(1),125-128.
MLA Ning, XG,et al."High-resolution transmission electron microscopy of structural changes at and near surfaces of ZnTe crystals".JOURNAL OF APPLIED PHYSICS 79.1(1996):125-128.
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