Synthesis and properties of Cd1-xMnxS diluted magnetic semiconductor ultrafine particles

被引：27

作者：

Bandaranayake, RJ ^{[1
]}

Lin, JY ^{[1
]}

Jiang, HX ^{[1
]}

Sorensen, CM ^{[1
]}

机构：

[1] KANSAS STATE UNIV,DEPT PHYS,MANHATTAN,KS 66506

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1997年 / 169卷 / 03期

基金：

美国国家科学基金会;

关键词：

diluted magnetic semiconductor; ultrafine particles; spin-glass properties;

D O I：

10.1016/S0304-8853(96)00746-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cd1-xMnxS diluted magnetic semiconductor ultrafine particles with sizes in the range 20 to similar to 1200 Angstrom and 0 less than or equal to x less than or equal to 0.5 have been synthesized by using aqueous solution precipitation. We find that size has a significant effect on the magnetic spin-glass (SG) properties of these systems. The SG freezing temperature T-f decreases with size, and there is a minimum size below which the SG does not form. The field dependence of T-f and the relaxation of the isothermal remanent magnetization are also significantly different than in the bulk.

引用

页码：289 / 302

页数：14

共 34 条

[1] DIMENSIONAL-CROSSOVER STUDIES OF MAGNETIC-SUSCEPTIBILITY IN DILUTED-MAGNETIC-SEMICONDUCTOR SUPERLATTICES [J].