The Barkhausen Effect

Investigation of shot-peened austenitic stainless steel 304L by means of magnetic Barkhausen noise

“…When a magnetic field is applied, such magnetic structures are reorganized, and if the Bloch walls are not totally free to move under the influence of this field, sudden and irreversible motions occur. In this case, the local magnetization variations induced give rise to the so-called Barkhausen effect [14,15].…”

One Million Percent Tunnel Magnetoresistance in a Magnetic van der Waals Heterostructure

“…The hysteresis and jumps observed below T * for perpendicular field are suggestive of domain flips analogous to the Barkhausen effect. 35 Indeed, magneto-optical measurements by Zhong et al on CrI3 flakes of comparable thickness report complex domain dynamics within a similar field range. 20 One possibility is that the different layers are coupled ferromagnetically and all flip spin within a given domain.…”

Multiple-mode excitation in spin-transfer nanocontacts with dynamic polarizer

“…An in-plane field elongates the orbit of the vortices and off-center them. 8 The displacement is inversely proportional to the product M S d, 10,16 therefore the vortex in the Py is particularly sensitive to the field. At intermediate currents and in absence of in-plane field, when the vortex in the Co is expelled from the contact, the STT on the Py suddenly increases.…”