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Rotatable magnetic anisotropy in epitaxial ferrite layers

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2 Author(s)
Baszynski, J. ; Institute of Molecular Physics, Poland ; Szymanski, B.

Magnetic domain structure and magnetic anisotropy were studied in monocrystalline epilayers of Mg0.9Mn0.3Fe1.8O4ferrite. The layers, several micrometers thick, were obtained by a CVD method on monocrystalline MgO substrates. Domain observations were performed by the Bitter's method. Magnetic anisotropy measurements were performed by torque and FMR methods. In the demagnetized state, a typical stripe structure of 2.0 to 2.8 μm period was observed. From the domains behavior in the in-plane magnetic fields it was found that in these epilayers the rotatable anisotropy was present. The existence of this anisotropy was confirmed by torque measurements in small in-plane fields. The magnetic parameters characterizing these layers are: 4ΠM = 3500 Gs, K1= - 2.2 × 104ergs/cc, KN= 2.3 × 105ergs/cc.

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Magnetics, IEEE Transactions on  (Volume:16 ,  Issue: 5 )