Title :
Perpendicular uniaxial magnetic anisotropy of Fe16N2(001) single crystal films grown by molecular beam epitaxy
Author :
Takahashi, H. ; Igarashi, M. ; Kaneko, A. ; Miyajima, H. ; Sugita, Y.
Author_Institution :
Central Res. Lab., Hitachi Ltd., Tokyo, Japan
fDate :
9/1/1999 12:00:00 AM
Abstract :
The uniaxial magnetic anisotropies by torque measurement have been measured for Fe16N2(001) single crystal films grown by molecular beam epitaxy (MBE). It has been found that Fe16 N2(001) films exhibits perpendicular uniaxial anisotropy which makes the easy axis along the [001] direction, and those anisotropy constants KU1 and KU2 for Fe16N2 were 1.6×107 and 0.4×107 erg/cm3 respectively. Those KU1 and KU2 for Fe16N2 were constant in the thickness range from 34 to 83 nm. The ferromagnetic resonance of Fe16N2(001) single crystal films have been measured. The saturation magnetic flux densities, 4πMs for Fe16N2 measured by the magnetic torques and resonance fields agreed well with the values measured with a vibrating sample magnetometer (VSM)
Keywords :
ferromagnetic materials; ferromagnetic resonance; iron alloys; iron compounds; magnetic epitaxial layers; magnetic flux; magnetic thin films; perpendicular magnetic anisotropy; Fe16N2; Fe16N2(001) single crystal films; MBE; anisotropy constants; ferromagnetic resonance; molecular beam epitaxy; perpendicular uniaxial magnetic anisotropy; resonance fields; saturation magnetic flux densities; torque measurement; vibrating sample magnetometer; Anisotropic magnetoresistance; Density measurement; Iron; Magnetic anisotropy; Magnetic field measurement; Magnetic films; Magnetic resonance; Molecular beam epitaxial growth; Torque measurement; Vibration measurement;
Journal_Title :
Magnetics, IEEE Transactions on
