Magnetic properties of amorphous Ge-Fe thin films

S. H. Song; S. H. Lim

doi:10.1016/j.jmmm.2006.01.133

Magnetic properties of amorphous Ge-Fe thin films

S. H. Song, S. H. Lim

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Thin films of Ge_100-xFe_x (x in at%) alloys, fabricated by thermal co-evaporation, have an amorphous structure at compositions x<∼40, although an unidentified crystalline phase with an FCC symmetry also exists at low Fe content. Magnetization versus temperature curves show that saturation magnetization is non-zero (1 to 2.5 emu/cm³) and remains nearly unchanged up to the highest measured temperature of 350 K. Magnetic hysteresis loops at room temperature show a typical ferromagnetic shape, complete saturation occurring by 1-2 kOe. These results may indicate ferromagnetic ordering at room temperature. No definite tendency is observed in the compositional dependence of saturation magnetization.

Original language	English
Pages (from-to)	64-68
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	304
Issue number	1
DOIs	https://doi.org/10.1016/j.jmmm.2006.01.133
Publication status	Published - 2006 Sep

Keywords

Amorphous Ge-Fe alloys
High Curie temperature
Magnetic properties
Thin films

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Magnetic properties of amorphous Ge-Fe thin films",

abstract = "Thin films of Ge100-xFex (x in at%) alloys, fabricated by thermal co-evaporation, have an amorphous structure at compositions x<∼40, although an unidentified crystalline phase with an FCC symmetry also exists at low Fe content. Magnetization versus temperature curves show that saturation magnetization is non-zero (1 to 2.5 emu/cm3) and remains nearly unchanged up to the highest measured temperature of 350 K. Magnetic hysteresis loops at room temperature show a typical ferromagnetic shape, complete saturation occurring by 1-2 kOe. These results may indicate ferromagnetic ordering at room temperature. No definite tendency is observed in the compositional dependence of saturation magnetization.",

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author = "Song, {S. H.} and Lim, {S. H.}",

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AU - Song, S. H.

AU - Lim, S. H.

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AB - Thin films of Ge100-xFex (x in at%) alloys, fabricated by thermal co-evaporation, have an amorphous structure at compositions x<∼40, although an unidentified crystalline phase with an FCC symmetry also exists at low Fe content. Magnetization versus temperature curves show that saturation magnetization is non-zero (1 to 2.5 emu/cm3) and remains nearly unchanged up to the highest measured temperature of 350 K. Magnetic hysteresis loops at room temperature show a typical ferromagnetic shape, complete saturation occurring by 1-2 kOe. These results may indicate ferromagnetic ordering at room temperature. No definite tendency is observed in the compositional dependence of saturation magnetization.

KW - Amorphous Ge-Fe alloys

KW - High Curie temperature

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