Characterization of magnetic recording tapes with the rotating-sample magnetometer

Disks cut from three types of commercial magnetic recording tape have been measured over a range of temperatures with the rotating-sample magnetometer to obtain information about the magnitude, temperature dependence, and origin of the anisotropies present, and about the coercive field and its temperature dependence. The experimental method has the advantage of giving continuous d.c. output signals which can be easily recorded vs. temperature.