Magnetically driven migration of planar <10•0> tilt grain boundaries with various misorientations in high purity zinc bicrystals was measured in situ by means of a specially designed polarization microscopy probe. The absolute grain boundary mobility and its temperature dependence were measured in the regime between 330 and 415C. The results revealed that there was a pronounced misorientation dependence of grain boundary mobility in the investigated angular range. The migration activation enthalpy was found to vary between 1.18 and 2.15eV.

Magnetically Driven Migration of Specific Planar Grain Boundaries in Zn Bicrystals. C.Günster, D.A.Molodov, G.Gottstein: Scripta Materialia, 2010, 63[3], 300-3