Title :
The effect of anisotropy in Co66Fe4Ni1 B14Si15 ribbon on the transverse incremental permeability and magnetoimpedance
Author :
Cho, Wan-Shik ; Lee, Heebok ; Lee, Seoung-Won ; Kim, Chong-Oh
Author_Institution :
Chungnam Nat. Univ., Taejon, South Korea
fDate :
9/1/2000 12:00:00 AM
Abstract :
The transverse incremental permeability and magneto-impedance effects in amorphous Co66Fe4Ni1B14 Si15 ribbons treated with various annealing and etching conditions have been investigated in conjunction with their magnetic anisotropy. The shape and the depth of double peaks in magneto-impedance ratio (MIR) and transverse permeability ratio (TPR) curves show the existence of the uniaxial magnetic anisotropy. The direction of magnetic anisotropy in samples annealed under magnetic field was induced parallel to their magnetic field. The direction of magnetic anisotropy in samples annealed without the magnetic field has changed ribbon to width direction. The surface etching of an as-quenched sample helps to orient the magnetic anisotropy to the ribbon axis. The maximum values of MIR and TPR depend on the magnetic softness rather than the direction of magnetic anisotropy. However, the shapes of MIR and TPR curves strongly depend on their uniaxial magnetic anisotropy
Keywords :
amorphous magnetic materials; annealing; boron alloys; cobalt alloys; etching; iron alloys; magnetic anisotropy; magnetic permeability; magnetoresistance; metallic glasses; nickel alloys; soft magnetic materials; Co66Fe4Ni1B14Si 15; amorphous ribbons; anisotropy effect; annealing; double peaks; etching; magnetic softness; magnetoimpedance ratio; metallic glasses; transverse incremental permeability; uniaxial magnetic anisotropy; Amorphous magnetic materials; Amorphous materials; Anisotropic magnetoresistance; Annealing; Etching; Magnetic anisotropy; Magnetic fields; Permeability; Perpendicular magnetic anisotropy; Shape;
Journal_Title :
Magnetics, IEEE Transactions on
