Simple model for magnetization ratios in doped nanocrystals
Abstract
Recent experiments on Mn-doped ZnS nanocrystals have shown unusual magnetization properties. We describe a nearest-neighbor Heisenberg exchange model for calculating the magnetization ratios of these antiferromagnetically doped crystals, in which the dopant atoms are distributed inhomogeneously within the nanocrystal. This simple inhomogeneous doping model is capable of reproducing the experimental results, and suggests that interior dopant atoms are localized within the crystal.
- Publication:
-
Journal of Applied Physics
- Pub Date:
- February 2004
- DOI:
- 10.1063/1.1637708
- arXiv:
- arXiv:cond-mat/0308180
- Bibcode:
- 2004JAP....95.1436S
- Keywords:
-
- 75.50.Tt;
- 75.60.Ej;
- Fine-particle systems;
- nanocrystalline materials;
- Magnetization curves hysteresis Barkhausen and related effects;
- Condensed Matter
- E-Print:
- 8 pages, 1 figure, 2 tables. Submitted to J. Appl. Phys