Studies on Magnetization Reversal in 2-dimensional Spin Photonic Crystals of Cobalt Anti-dot Arrays
Cobalt anti-dot square-lattice arrays of different periodicities were fabricated using the photolithography and wet-etching process. The dimensions of these 2-dimensional spin photonic crystals were checked by using scanning electron microscopy and atomic force microscopy whereas the magnetic properties were studied using the magnetooptical Kerr effect (MOKE) and magnetic force microscopy (MFM). The in-plane azimuthal MOKE measurements showed uniaxial two-fold anisotropy with the hard and the easy axes along the nearest neighbor rows/columns and the diagonal making an angle of 45? with respect to the nearest neighbor row/column, respectively. The coercive field was strongly influenced by changes in the lattice periodicity. The remanent state revealed well-defined domain structures, which varied periodically with the lattice geometry as was clearly seen from the MFM imaging. To elucidate the domain configuration, we also performed micromagnetic simulations and the results are presented in this report.
Spin photonic crystals Magneto-optical Kerr effect Magnetic anisotropy Magnetic force microscopy Magnetic reversals
N. G. Deshpande W. C. Nam M. S. Seo X. R. Jin S. J. Lee Y. P. Lee J. Y. Rhee
Quantum Photonic Science Research Center and Department of Physics, Hanyang University, Seoul 133-79 Department of Physics, Sungkyunkwan University, Suwon 440-746
国际会议
2009 Korea-China Symposium on Advanced Functional Films for Information(2009中韩先进信息功能薄膜研讨会)
兰州
英文
1345-1349
2009-08-16（万方平台首次上网日期，不代表论文的发表时间）