The measurement of the anisotropy field of cylindrical thin magnetic films

The described method for the anisotropy field measurement uses two fields H
L
and H
T
. The deviation of magnetization from the easy direction, and hence also sense signals, are proportional to these fields. The ratio of two integrated sense signals at
H_{L} = 0
and
H_{L} \neq 0
reaches a certain value (∼ 2.5) with field
H_{T} = H_{k}
. In this way, H
k
may be measured by a device designed for the coercive force measurement.