Systematic study of the temperature dependence of the saturation magnetization in Fe, Fe-Ni and Co-based amorphous alloys

Author

Liniers, M. ; Flores, J. ; Bermejo, F.J. ; Gonzales, J.M. ; Vicent, J.L. ; Tejada, J.

Author_Institution

Dpto. Fisica de Mater., Univ. Complutense, Madrid, Spain

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

3363

Lastpage

3365

Abstract

Magnetization versus temperature in the temperature interval 2-200 K was measured for amorphous alloys of three different compositions: Fe _81.5B_14.5Si₄, Fe₄₀Ni₃₈Mo₄B₁₈, and Co₇₀Fe₅Ni ₂Mo₃B₅Si₁₅. The measurements were performed by means of a SQUID (superconducting quantum interference device) magnetometer. The aim was to extract information about the different mechanisms contributing to thermal demagnetization. A powerful data analysis technique based on successive minimization procedures has demonstrated that Stoner excitations of the strong ferromagnetic type play a significant role in the Fe-Ni alloy studied. The Fe-rich and Co-rich alloys do not show a measurable contribution from single-particle excitations

Keywords

boron alloys; cobalt alloys; ferromagnetic properties of substances; iron alloys; magnetic properties of amorphous substances; magnetisation; metallic glasses; molybdenum alloys; nickel alloys; silicon alloys; 2 to 200 K; Co₇₀Fe₅Ni₂Mo₃B₅Si₁₅; Fe₄₀Ni₃₈Mo₄B₁₈; Fe_81.5B_14.5Si₄; SQUID magnetometer; Stoner excitations; amorphous alloys; amorphous ribbons; ferromagnetism; saturation magnetization; single-particle excitations; successive minimization procedures; superconducting quantum interference device; temperature dependence; thermal demagnetization; Amorphous materials; Cobalt alloys; Iron alloys; Magnetization; Nickel alloys; Performance evaluation; SQUIDs; Silicon alloys; Superconducting devices; Temperature dependence;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42302

Filename

42302