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Magnetic and luminescent properties of iron-doped ZnSe crystals

机译:掺杂铁的ZnSe晶体的磁性和发光性质

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Magnetic and luminescent properties of ZnSe crystals doped with Fe by various methods are studied. It is established that Fe impurity is responsible for photoluminescence (PL) bands at 980, 1320, 1450 nm and quenches PL band at 630-645 nm. It is found that magnetic properties of ZnSe:Fe crystals are sensitive to the doping method. At low fields, two magnetic subsystems may be observed for the samples doped with Fe during the growth process-weak paramagnetic subsystem and antiferromagnetic subsystem with T_C=130 K. For the samples doped with Fe by high-temperature annealing in Zn melt, few magnetic subsystems may be distinguished, however, the magnetic properties are typical for spin glasses with the transition temperature T_(sg)=(45-50) K.
机译:研究了各种方法掺杂Fe的ZnSe晶体的磁和发光性能。已确定,Fe杂质负责980、1320、1450 nm的光致发光(PL)带,并淬灭630-645 nm的PL带。发现ZnSe:Fe晶体的磁性对掺杂方法敏感。在低场下,生长过程中掺入Fe的样品可能会观察到两个磁性子系统,顺磁性子系统和T_C = 130 K的反铁磁子系统都很弱。对于在锌熔体中高温退火掺杂的Fe样品,几乎没有磁性子系统可以区别开来,但是,磁性能是转变温度T_(sg)=(45-50)K的自旋玻璃的典型特征。

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