Title :
Synthesis and properties of Cd1-xMnxS diluted magnetic semiconductor nanoparticles
Author :
Bandaranayake, R.J. ; Smith, M. ; Lin, J.Y. ; Jiang, H.X. ; Sorensen, C.M.
Author_Institution :
Dept. of Phys., Kansas State Univ., Manhattan, KS, USA
fDate :
11/1/1994 12:00:00 AM
Abstract :
Cd1-xMnxS diluted magnetic semiconductor (DMS) nanoparticles of crystallite size ranging from 20 to 300 Å and x from 0 to 8.65 have been chemically synthesized by using aqueous solution precipitation. Subsequent characterization has been carried out by X-ray diffractometry and TEM measurements. Magnetic properties of DMS particles have been measured with a SQUID magnetometer. A transition from a para-magnetic to a spin-glass state at a critical temperature T f has been observed. The applied magnetic field dependence of Tf has also been measured
Keywords :
X-ray diffraction; cadmium compounds; crystallites; magnetic particles; magnetic transitions; manganese compounds; materials preparation; precipitation (physical chemistry); semimagnetic semiconductors; transmission electron microscopy; Cd1-xMnxS diluted magnetic semiconductor nanoparticles; CdMnS; SQUID magnetometer; TEM measurements; X-ray diffractometry; applied magnetic field dependence; aqueous solution precipitation; chemical synthesis; critical temperature; crystallite size; magnetic properties; paramagnetic-spin-glass transition; Chemicals; Crystallization; Magnetic field measurement; Magnetic properties; Magnetic semiconductors; Nanoparticles; Particle measurements; SQUID magnetometers; Temperature; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
