Abstract: Absorption and Magnetic Circular Dichroism(MCD) spectra have been measured in a new diluted magnetic semiconductor Zn_1-xCo_xS(with x=0.001, 0.01, 0.03, 0.048, 0.053 and 0.063) at temperature 73K to300K in visible and near infrared 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 independent on the composition of sample and corresponding to the transitions between the different energy levels of Co²⁺ ion in a crystal field of T_d symmetry.

Key words: diluted magnetic semiconductor, absorption spectra, magneticcircular dichroism spectra

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-xCo_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Co²⁺离子在T_d对称的晶体场中不同能级间的跃迁。

关键词: 稀磁半导体, 吸收光谱, 磁圆二色谱