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Articles you may be interested inGiant magneto-impedance effect in amorphous ferromagnetic wire with a weak helical anisotropy: Theory and experiment J. Appl. Phys. 113, 243902 (2013); 10.1063/1.4812278Direct observation of an anisotropic in-plane residual stress induced by B addition as an origin of high magnetic anisotropy field of Ru/FeCoB film Strictly stress-induced magnetization reversal in magnetostrictive Co 50 Fe 50 /Co 80 B 20 multilayers was studied by magneto-optical Kerr microscopy. The remagnetization takes place by rotational processes in externally applied stress in the absence of magnetic fields. Multiple small-angle domains develop at low magnetic anisotropy. Cross-tie and ''fir-tree''-like domain structures appear. Magnetoelastic energy contributions in the substrate-film structure are responsible for the low-angle domain wall patterns. Additional effects from the crystalline nature of the films are discussed.

The magneto-optic indicator film technique was used to image the magnetic domain structure in a Tb40Fe60/Fe50Co50 multilayer as either a stress or magnetic field was applied 90° to the material’s easy axis. These observations showed that the magnetization vectors rotated under application of the stress, and recovered upon removal of that stress, in general without domain wall motion. However, magnetization rotation under field application was observed to include wall motion, and the magnetic state was found to have been changed upon removal of the field contrary to expectations. In both cases, both inhomogeneous and homogeneous rotations were observed.

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Magnetostrictive amorphous FeCoBSi thin films for sensor applications have been investigated with regard to their magnetic properties dependent on strain. With special test jigs, allowing measurements in a vibrating sample magnetometer, Kerr‐Effect microscope and high frequency permeameter, the magnetic dc and high frequency properties as a function of applied strain were investigated and correlated to the domain behavior. Under the condition that the applied strain stabilizes the magnetic easy axis in an orientation perpendicular to the high frequency magnetic field direction these magnetostrictive thin films can be used as cores of microinductors monitoring the strain via inductance changes. With FeCoBSi films a material quality factor of 10 and a high gauge factor (Δµ/µ0/Δε) of 2400 is obtained at 250 MHz. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)