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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10.1016/j.jmmm.2006.01.133

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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.",

keywords = "Amorphous Ge-Fe alloys, High Curie temperature, Magnetic properties, Thin films",

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

note = "Funding Information: Financial support from the Research Center of Advanced Magnetic Materials at CNU is gratefully acknowledged. The authors wish to thank W. B. Paek for her help in structural characterizations. ",

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T1 - Magnetic properties of amorphous Ge-Fe thin films

AU - Song, S. H.

AU - Lim, S. H.

N1 - Funding Information: Financial support from the Research Center of Advanced Magnetic Materials at CNU is gratefully acknowledged. The authors wish to thank W. B. Paek for her help in structural characterizations.

PY - 2006/9

Y1 - 2006/9

N2 - 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.

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

KW - Magnetic properties

KW - Thin films

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DO - 10.1016/j.jmmm.2006.01.133

M3 - Article

AN - SCOPUS:33646874375

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EP - 68

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

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Magnetic properties of amorphous Ge-Fe thin films

Abstract

Keywords

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