Large induced magnetic anisotropy in manganese spinel ferrite films
Originally published in Applied Physics Letters 87, 152505 (2005). DOI:10.1063/1.2084341 (http://dx.doi.org/10.1063/1.2084341).
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.
X. Zuo, A. Yang, S. D. Yoon, J. A. Christodoulides, V. G. Harris, and C. Vittoria. "Large induced magnetic anisotropy in manganese spinel ferrite films" Electrical and Computer Engineering Faculty Publications (2005).
Available at: http://works.bepress.com/cvittoria/29