Spiraling spin structure in an exchange-coupled antiferromagnetic layer
Using trilayers of permalloy/FeMn/Co with various thicknesses t(AF) of the antiferromagnetic FeMn, we have observed evidence of a spiraling spin structure within FeMn. For t(AF)<90 A, the turn angle straight theta of the spiral varies as straight theta = (1.76 degrees /A)t(AF).
Yang
FY
Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Maryland 21218, USA.
Chien
CL