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 Sept

Bibliographical 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.

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

Cite this

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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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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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M3 - Article

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SN - 0304-8853

VL - 304

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JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

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Magnetic properties of amorphous Ge-Fe thin films

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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