Abstract
The oxygen pressure dependence of magnetic anisotropy in pulse laser deposited manganese ferrite (MnFe₂O₄) films was investigated. Magnetic anisotropy fields (H-a) are shown to exceed 5 kOe when films were processed at oxygen pressures below 5 mTorr. Further, it is shown that the magnetically preferred direction of H-a can be aligned either along the film plane (pO₂< 8 mTorr) or perpendicular to it (pO₂>8 mTorr). The ability to induce large perpendicular magnetic anisotropy in spinel ferrites allows for new applications (i.e., phase shifters, filters, isolators, and circulators) near or above X-band frequencies to be considered.
Keywords
oxygen pressure dependence, magnetic anisotropy, manganese spinel ferrite films, MnFe₂O₄
Subject Categories
Anisotropy, Pulsed laser deposition, Spinel, Ferrites (Magnetic materials)
Disciplines
Electromagnetics and photonics
Publisher
American Institute of Physics
Publication Date
10-10-2005
Rights Information
Copyright 2005 American Institute of Physics.
Rights Holder
American Institute of Physics
Permanent URL
Recommended Citation
Zuo, X.; Yang, A.; Yoon, S. D.; Christodoulides, J. A.; Harris, V. G.; and Vittoria, C., "Large induced magnetic anisotropy in manganese spinel ferrite films" (2005). Electrical and Computer Engineering Faculty Publications. Paper 64. http://hdl.handle.net/2047/d20002235
Figure 1
large_induced_figure_2.ppt (33 kB)
Figure 2
large_induced_figure_3.ppt (28 kB)
Figure 3
large_induced_figure_4.ppt (20 kB)
Figure 4
Click button above to open, or right-click to save.
Additional Files
large_induced_figure_1.ppt (27 kB)Figure 1
large_induced_figure_2.ppt (33 kB)
Figure 2
large_induced_figure_3.ppt (28 kB)
Figure 3
large_induced_figure_4.ppt (20 kB)
Figure 4
Notes
Originally published in Applied Physics Letters 87, 152505 (2005). DOI:10.1063/1.2084341 (http://dx.doi.org/10.1063/1.2084341).