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STRESS AND TEMPERATURE EFFECT ON THE FMR RESPONSE OF NEARLY ZERO MAGNETOSTRICTIVE AMORPHOUS MICROWIRES

F. M. Tufescu1, T. A. Óvári2, H. Chiriac2, A. Stancu1,*

Affiliation

  1. “Alexandru Ioan Cuza” University, Faculty of Physics, Iasi, Romania
  2. National Institute of R&D for Technical Physics, Iasi, Romania

Abstract

Results on the ferromagnetic resonance (FMR) investigation of the effect of applied tensile stresses and different temperatures during measurements on the surface magnetic anisotropy of Co68.25Fe4.5Si12.25B15 amorphous glass-covered microwires are reported. Axial stresses determine a decrease of the resonance field and an increase of the absorption intensity that correspond to the resonance peak, indicating a reinforcement of the circumferential magnetoelastic anisotropy from the microwire’s surface region. An increase of the temperature during measurements up to 160 C leads to a significant increase of the resonance field that corresponds to a decrease of the circumferential magnetoelastic anisotropy..

Keywords

Magnetostriction, Amorphous microwire, Ferromagnetic resonance.

Submitted at: July 22, 2002
Accepted at: March 12, 2003

Citation

F. M. Tufescu, T. A. Óvári, H. Chiriac, A. Stancu, STRESS AND TEMPERATURE EFFECT ON THE FMR RESPONSE OF NEARLY ZERO MAGNETOSTRICTIVE AMORPHOUS MICROWIRES, Journal of Optoelectronics and Advanced Materials Vol. 5, Iss. 1, pp. 273-277 (2003)