Magnetic characteristics of epitaxial Ge(Mn,Fe) diluted films —a new room temperature magnetic semiconductor?

Autor:	R. R. Gareev, H. Braak, R. Schreiber, Claus M. Schneider, Daniel E. Bürgler, Peter Grünberg
Rok vydání:	2005
Předmět:	Materials science Condensed matter physics chemistry Analytical chemistry Curie temperature chemistry.chemical_element Germanium Magnetic semiconductor Condensed Matter Physics Epitaxy Deposition (law) Electronic Optical and Magnetic Materials Molecular beam epitaxy
Zdroj:	Journal of Magnetism and Magnetic Materials. 286:46-50
ISSN:	0304-8853
Popis:	We prepare 100 nm thick, epitaxial Ge 100 - ( x + y ) (Mn x ,Fe y ) diluted films with Mn and Fe concentrations of several at% using a layer-by-layer deposition scheme at elevated temperature. We measure saturation magnetization m S versus temperature curves for a variety of ( x , y ) combinations and find for fixed temperatures a non-trivial dependence of m S on x and y. Within a certain window in the ( x , y ) parameter space Ge 100 - ( x + y ) (Mn x ,Fe y ) exhibits a Curie temperature of 350 K and m S ≈ 10 emu/cm 2 at room temperature.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4e1b9f3db840165d1eef84ad68be6ef0 https://doi.org/10.1016/j.jmmm.2004.09.034 Zobrazit plný text záznamu Full Text from ScienceDirect