Correlations Between Optical Transmission and Magnetic Properties of Doped and Undoped GaMnN

Autor: E. A. Berkman, Amr M. Mahros, A. Emara, M. O. Luen, John F. Muth, Salah M. Bedair, X. Zhang, Nadia A. El-Masry, F. E. Arkun
Rok vydání: 2007
Předmět:
Zdroj: MRS Proceedings. 999
ISSN: 1946-4274
0272-9172
DOI: 10.1557/proc-0999-k06-06
Popis: Ferromagnetism (FM) in GaMnN was found to be related to the position of the Fermi level relative to the Mn deep-level band. The location of the Fermi level can be altered by doping GaMnN with Si (n-type) and Mg (p-type) dopants, resulting in a ferromagnetic to paramagnetic transformation. We have found that this manipulation of the Fermi level also can affect the optical properties of GaMnN, GaMnN: Mg and GaMnN: Si. The major optical absorption bands were found either to be enhanced or diminished depending on the level and nature of the doping elements. Therefore, a correlation between optical properties and saturation magnetization of GaMnN can be established.
Databáze: OpenAIRE
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