Bolometric Detection of Ferromagnetic Resonance in Amorphous Microwires

Author

Kraus, L.

Author_Institution

Inst. of Phys., Prague, Czech Republic

Volume

51

Issue

1

fYear

2015

fDate

Jan. 2015

Firstpage

1

Lastpage

4

Abstract

Ferromagnetic resonance (FMR) of glass-coated amorphous Fe₇₈Ni₈P₁₀B₁₀ and Co₆₇Fe₄Cr₇Si₈B₁₄ microwires was investigated at frequency 9.54 GHz by the standard FMR and the electrically detected FMR techniques. Static magnetic field was applied parallel to the wire axis and the resonance was driven by the microwave current passing through the wire. The field dependences of electrical resistance measured at different levels of microwave power were compared with the resonance curves obtained by the standard FMR method. It was found that the change of resistance observed at the resonance is caused by the increase of temperature due to the energy dissipation by the Gilbert damping of spin-precession motion.

Keywords

amorphous magnetic materials; boron alloys; chromium alloys; cobalt alloys; ferromagnetic materials; ferromagnetic resonance; glass; iron alloys; magnetoresistance; micromagnetics; nickel alloys; phosphorus alloys; silicon alloys; Gilbert damping; SiO₂-Co₆₇Fe₄Cr₇Si₈B₁₄; SiO₂-Fe₇₈Ni₈P₁₀B₁₀; bolometric detection; electrical resistance; electrically detected FMR techniques; energy dissipation; ferromagnetic resonance; frequency 9.54 GHz; glass-coated amorphous microwires; microwave current; microwave power; spin-precession motion; standard FMR techniques; static magnetic field; wire axis; Electrical resistance measurement; Magnetic resonance; Microwave measurement; Microwave theory and techniques; Resistance; Temperature measurement; Wires; Amorphous microwires; anisotropic magnetoresistance (AMR); bolometric effect; ferromagnetic resonance (FMR);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2357074

Filename

7029257