Observation of s-d exchange force between domain walls and electric current in very thin Permalloy films
- 15 February 1985
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 57 (4) , 1266-1269
- https://doi.org/10.1063/1.334524
Abstract
Large dccurrent pulses, ≂2 μs long, are sent through 30–40‐nm‐thick Ni8 7Fe1 3 films containing Néel walls. Wall displacements are seen for current densities ≥1.2×107 A/cm2. Displacements reverse when current sense is reversed. Walls always move in direction of charge carriers in this electronlike material. Our results agree with a theory of s‐dexchange interaction between walls and 4sconduction electrons. Hydromagnetic ‘‘domain‐drag’’ forces are too small in such very thin films to explain our data.This publication has 22 references indexed in Scilit:
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