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新型稀磁半导体Zn_(1-x)Co_xS光谱特性的实验研究

Experimental Study of Spectra in New Diluted Magnetic Semiconductor Zn1-xCoxS

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【作者】 王学忠陈辰嘉刘国彬

【Author】 WANG Xuezhong CHEN Chenjia LIU Guobin(Department of Physics, Peking University, Beijing, 100871 )W Giriat(Centro de Fisica, Instituto Venezolano de Investigaciones Cientificas, Apartado 21827, Caracas 1020A, Venezuela)

【机构】 北京大学物理学系

【摘要】 在73~300K温度范围内,首次测量了不同组分的新型稀磁半导体Zn_(1-x)Co_xS(x=0.001,0.01,0.03,0.048,0.053,0.063)的近红外和可见区的吸收光谱和磁圆二色谱。观测到一系列吸收峰和磁圆二色谱峰,两者互相对应,其峰位与样品组分x值无关。它们分别对应于Co ̄(2+)离子在T_d对称的晶体场中不同能级间的跃迁。

【Abstract】 Absorption and Magnetic Circular Dichroism (MCD ) spectra have been measured in a new diluted magnetic semiconductor Zn1-xCoxS(with x=0. 001,0. 01,0. 03,0. 048,0. 053 and 0. 063)at temperature 73K to 300K in visible and near in-frared region respectively for the first time.A series of absorption and MCD spectra have been observed. Both of the spectra are in good agreement and the peaks are in-dependent on the composition of sample and corresponding to the transitions between the different energy levels of Co ̄(2+)ion in a crystal field of Td symmetry.

【基金】 国家自然科学基金及北京大学稀土材料化学及应用开放实验室资助
  • 【文献出处】 北京大学学报(自然科学版) ,ACTA SCICENTIARUM NATURALUM UNIVERSITIS PEKINESIS , 编辑部邮箱 ,1995年05期
  • 【分类号】O472
  • 【被引频次】6
  • 【下载频次】101
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