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Magnetoelastic properties of Co‐based amorphous ferromagnetic microwires
Author(s) -
Gudoshnikov Sergey,
Ignatov Andrey,
Tarasov Vadim,
Gorbunov Sergey,
Molokanov Vyacheslav,
Chueva Tatyana,
Usov Nikolay
Publication year - 2016
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.201532567
Subject(s) - materials science , magnetostriction , condensed matter physics , ferromagnetism , amorphous metal , magnetization , residual stress , anisotropy , giant magnetoimpedance , amorphous solid , magnetometer , magnetic anisotropy , nuclear magnetic resonance , magnetic field , magnetoresistance , alloy , composite material , giant magnetoresistance , optics , crystallography , chemistry , physics , quantum mechanics
Vibrational magnetometry and small‐angle magnetization rotation methods have been used to study magnetoelastic properties of glass‐coated Co‐rich microwires of composition Co 69 Fe 4 Cr 4 Si 12 B 11 with metallic nucleus diameter d = 55 μm and total diameter D = 80 μm. The saturation wire magnetization has been found to be M s = 590 emu cm −3 , the magnetostriction constant λ s = −0.49 × 10 −7 , and the bare anisotropy field H a = 0.24 Oe. The average value of the residual quenching stress has been estimated to be Δ σ ≈ 137 MPa. The diagonal Z φφ component of the giant magnetoimpedance tensor turns out to be significantly dependent on the position along the wire axis. This can be attributed to a non uniformity of the residual stress distribution. It is shown that the measurement of the magnetic characteristics of the microwire enables one to estimate quantitatively the magnitude of the applied mechanical stress.