A bicrystal of Zn with an originally flat 89° <10▪0> symmetrical tilt boundary was annealed in a magnetic field of 25T. The boundary migrated under the action of a magnetic driving force in the direction of the grain with higher diamagnetic susceptibility. In addition, the boundary changed its crystallographic orientation, decreasing length and becoming almost perpendicular to the free surfaces. The results were interpreted in terms of magnetically forced grain boundary motion due to the anisotropy of the magnetic susceptibility in Zn. The absolute boundary mobility was found to be about 5.1 x 10–9m4/Js.

Boundary Migration in Zn Bicrystal Induced by a High Magnetic Field. A.D.Sheikh-Ali, D.A.Molodov, H.Garmestani: Applied Physics Letters, 2003, 82[18], 3005-7