Single Domain Wall Propagation at Low Fields

J. Kostyk, R. Varga, M. Vazquez
2014 Acta Physica Polonica. A  
We have studied the domain wall propagation at low elds regime in thin glass-coated microwire of composition Fe77.5Si7.5B15. It is shown, that power law describes domain wall dynamics at low elds. Such behaviour results from the interaction of the propagating domain wall with the defects present in the material. At high elds, the domain wall mobility becomes negative. This can be explained as a result of domain structure relaxation. The exponent q from power law, which determines the domain
more » ... ines the domain wall shape, has a value of 0.19 for both cases, without applied stress and with applied stress of 20 MPa. This means, that domain wall shape is exible in both measurements.
doi:10.12693/aphyspola.126.30 fatcat:2p5mmi2p25ar7dc4cehm75qbdq