Magneto-Optical Properties of Hybrid Magnetic Material Semiconductor Nanostructures
Abstract
Calculations were performed of the formation energies of transition metal carbides and silicides in order to evaluate the thermodynamic limitations to incorporation of these elements as dopants in Silicon carbide. The prospects of SiC as a host for dilute magnetic semiconductor applications by doping with Cr and Mn were evaluated. Calculations were performed for MnN and Mn3N2 compounds and a model developed for explaining their anti ferromagnetic order in terms of exchange interactions between near neighbors. Densities of states calculations of these materials were used to interpret spin-polarized scanning tunneling microscopy data. Calculations were performed for FeN in zincblende and rocksalt structure to compare their relative stability and magnetic properties. Calculations of the preference for ferro or anti ferromagnetic coupling were performed for GdN. Program development work on magneto- optics and methods beyond LDA was initiated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2003
- Accession Number
- ADA417362
Entities
People
- Walter R. Lambrecht
Organizations
- Case Western Reserve University