中国物理B ›› 1995, Vol. 4 ›› Issue (4): 296-300.doi: 10.1088/1004-423X/4/4/008

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SURFACE PHASE DECOMPOSITION IN Bi2Sr2CaCu2O7-y SINGLE CRYSTALS UNDER NITROGEN IONS IRRADIATION

石磊, 汪良斌, 李晓光, 吴文彬, 周贵恩, 张裕恒   

  1. Laboratory of Structure Analysis, University of Science and Technology of China, Academia Sinica, Hefei 230026, China, and Center for Advanced Studies in Science and Technology of Microstructures, Nianjing 210093, China
  • 收稿日期:1994-08-03 出版日期:1995-04-20 发布日期:1995-04-20

SURFACE PHASE DECOMPOSITION IN Bi2Sr2CaCu2O7-y SINGLE CRYSTALS UNDER NITROGEN IONS IRRADIATION

SHI LEI (石磊), WANG LIANG-BIN (汪良斌), LI XIAO-GUANG (李晓光), WU WEN-BIN (吴文彬), ZHOU GUI-EN (周贵恩), ZHANG YU-HENG (张裕恒)   

  1. Laboratory of Structure Analysis, University of Science and Technology of China, Academia Sinica, Hefei 230026, China, and Center for Advanced Studies in Science and Technology of Microstructures, Nianjing 210093, China
  • Received:1994-08-03 Online:1995-04-20 Published:1995-04-20

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摘要： The influence of irradiation by 30 keV nitrogen ions with a fluence 1×1018N+·cm-2 on the crystal structure of single crystal Bi2Sr2CaCu2O7-y was investigated by means of X-ray photoelectron spectroscopy and X-ray diffraction. The irradiation caused a transformation from Bi2Sr2CaCu2O7-y (2212 phase) to Bi2Sr2CuO5-x (2201 phase). It was observed that. a small amount of metallic bismuth with an average thickness of about 6.3nm appeared after the irradiation. The possible reaction mechanism under nitrogen-ion irradiation was discussed.

Abstract: The influence of irradiation by 30 keV nitrogen ions with a fluence 1×1018N+·cm-2 on the crystal structure of single crystal Bi2Sr2CaCu2O7-y was investigated by means of X-ray photoelectron spectroscopy and X-ray diffraction. The irradiation caused a transformation from Bi2Sr2CaCu2O7-y (2212 phase) to Bi2Sr2CuO5-x (2201 phase). It was observed that. a small amount of metallic bismuth with an average thickness of about 6.3nm appeared after the irradiation. The possible reaction mechanism under nitrogen-ion irradiation was discussed.

中图分类号:  (Ion radiation effects)

  • 61.80.Jh
61.66.Fn (Inorganic compounds) 68.35.Rh (Phase transitions and critical phenomena) 79.60.Bm (Clean metal, semiconductor, and insulator surfaces)