Magnetic properties of MnAs nanocrystals embedded in GaAs
Publikation/Tidskrift/Serie: Journal of Magnetism and Magnetic Materials
Förlag: Elsevier Science B.V
A phenomenological model for explaining the magnetic properties of MnAs nanocrystals embedded in GaAs is proposed. It is shown that experimental data of DC magnetization as a function of temperature, obtained according to zero-field-cooled and field-cooled protocols, can be understood assuming a transition of the system from a low temperature state in which very slow dynamics is observed(frozen state) to a high-temperature state in which dynamics is fast(quasi superparamagnetic state). (C) 2009 Elsevier B. V. All rights reserved.
- Physics and Astronomy
- ISSN: 0304-8853