D. Steininger, A. K. Huettel, M. Ziola, M. Kiessling, M. Sperl, G. Bayreuther, Ch. Strunk
We investigate submicron ferromagnetic PdNi thin-film strips intended as contact electrodes to carbon nanotube-based spintronic devices. The strips are studied for their magnetic properties with respect to magnetic anisotropy and micromagnetic structure, depending on temperature and aspect ratio. Magnetic hysteresis measurements of Pd0.3Ni0.7 using SQUID magnetometry are performed on arrays containing strips of various width, and point towards a magnetically easy axis transversal to the strip direction. For further investigation of spontaneous magnetization, the anisotropic magnetoresistance is measured on individual Pd0.3Ni0.7 contact strips, and magnetic force microscopy is performed. Both confirm independently this magnetic structure of the electrodes.
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http://arxiv.org/abs/1208.2163
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