Premium
Low‐field non‐resonant microwave absorption in glass‐coated Co‐rich microwires
Author(s) -
Valenzuela Raul,
Montiel Herlinda,
Alvarez Guillermo,
Zamorano Rafael
Publication year - 2009
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200881268
Subject(s) - giant magnetoimpedance , microwave , anisotropy , amorphous solid , materials science , ferromagnetic resonance , absorption (acoustics) , condensed matter physics , magnetization , field (mathematics) , ferromagnetism , nuclear magnetic resonance , magnetic field , optics , chemistry , composite material , physics , giant magnetoresistance , magnetoresistance , crystallography , mathematics , quantum mechanics , pure mathematics
A study of low‐field non‐resonant microwave absorption (LFA) at 9.8 GHz, on as‐cast amorphous Co‐rich CoFeBSi microwires under different measuring geometries is presented. Results confirm that LFA is associated with the magnetization processes from the unmagnetized state ( H DC = 0) to the saturated condition, in many aspects similar to Giant Magnetoimpedance (GMI), and clearly different from ferromagnetic resonance (FMR). LFA signal showed large variations in its maximum–minimum separation as a function of the measuring geometry, which is interpreted in terms of the total anisotropy in the process. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)