Magnetic properties of amorphous Ge-Fe thin films

S. H. Song, Sang Ho Lim

Research output: Contribution to journalArticle

8 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)64-68
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume304
Issue number1
DOIs
Publication statusPublished - 2006 Sep 1

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Keywords

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

ASJC Scopus subject areas

  • Condensed Matter Physics

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