Title :
Incoherent rotation in barium ferrite thin film recording media
Author :
Chen, Yingjian ; Yang, Wei ; Lambeth, David N. ; Kryder, Mark H.
Author_Institution :
Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA
fDate :
9/1/1997 12:00:00 AM
Abstract :
The angular dependence of the remanent magnetic properties of uniaxially in-plane oriented barium ferrite films were found to deviate significantly from the Stoner-Wohlfarth (SW) coherent rotation model. The in-plane torque and the rotational hysteresis were studied in both aligned and randomly oriented films. They were found to be different from that calculated from the SW coherent rotation model, and suggested incoherent rotation of magnetization during the switching process. Incoherent rotation was found to be dependent on grain size and intergranular interactions
Keywords :
ferrites; grain size; magnetic hysteresis; magnetic recording; magnetic thin films; magnetisation reversal; remanence; BaFe12O19; aligned films; grain size; in-plane torque; intergranular interactions; magnetisation incoherent rotation; randomly oriented films; remanent magnetic properties; rotational hysteresis; switching process; thin film recording media; uniaxially in-plane oriented films; Barium; Ferrite films; Grain size; Magnetic films; Magnetic hysteresis; Magnetic properties; Magnetic recording; Magnetic switching; Magnetization; Torque;
Journal_Title :
Magnetics, IEEE Transactions on
