利用MPMS-XL型超导量子干涉仪 (superconducting quantum interference device, SQUID)对本实验室生长的Hg0.89Mn0.11Te 晶体的磁化强度和磁化率进行了研究.结果表明,Hg0.89Mn0.11Te在2 K恒温下,-0.5~0.5 kOe磁场范围内出现不可逆磁化. 在温度低于2.8 K时该晶体出现自旋-玻璃转变,以磁化率在冻结温度处出现拐点和低于冻结温度时磁化过程不可逆为主要鉴别特征.这是目前在该材料中发现的最小磁性离子浓度下限(渗透极限).
参考文献
[1] | Furdyna J K .Diluted Magnetic Semiconductors[J].Journal of Vacuum Science and Technology,1982,21:220. |
[2] | Shoichi Nagata;Galazka R R;Mullin D P et al.Magnetic Susceptibility,Specific Heat,and the Spin-glass Transition in Hg1-xMnxTe[J].Physical Review B:Condensed Matter,1980,22(07):3331-3334. |
[3] | Otto M;Dietl T;Mycielski A.Magnetic and Magnetooptical Properties of Hg1-xMnxTe and Hg1-xMnxSe[A].Jaszowiec,Poland,1980 |
[4] | Mycielski A;Rigaux C;Menant M et al.Spin Glass Phase Transition in Hg1-tkMnkTe Semimagnetic Semiconductors[J].Solid State Communications,1984,50(03):257-260. |
[5] | Zewen Wang;Wanqi Jie;Yong Xie;Haoliang Wang .Characterization of HgMnTe crystals grown by vertical Bridgman method[J].Journal of Crystal Growth,2007(1):104-108. |
[6] | Spalek J;Lewichi A;Tarnawski Z et al.Magnetic Susceptibility of Semimagnetic Semiconductors:The high-temperature Regime and the Role of Superexchange[J].Physical Review,1986,B33(05):3407-3418. |
[7] | 王泽温,介万奇.稀磁半导体Hg0.89Mn0.11Te磁化强度及磁化率的研究[J].物理学报,2007(02):1141-1145. |
[8] | Galazka R R;Shoichi Nagata;Keesom P H .Paramagnetic-spin-glass-antiferromagnetic Phase Transitions in Cd1-xMnxTe from Specific Heat and Magnetic Susceptibility Measurements[J].Physical Review B:Condensed Matter,1980,22(07):3344-3355. |
[9] | Oseroff S B .Magnetic Susceptibility and EPR Measurements in Concentrated Spin-glasses:Cd1-xMnxTe and Cd1-xMnxSe[J].Physical Review B:Condensed Matter,1982,25(11):6584-6594. |
[10] | Mcalister S P;Furdyna J K;Giriat W .Magnetic Susceptibility and Spin-glass Transition in Zn1-xMnxTe[J].Physical Review B:Condensed Matter,1984,29(03):1310-1314. |
[11] | Villeret M;Rodriguze S .Energy-level Spectra of Transition-metal Ions in II-VI Semiconductors[J].Physical Review B:Condensed Matter,1990,41(14):10028-10042. |
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