Nanoscale magnetic hysteresis of Ni80Fe20/Au/Co trilayers using ballistic electron magnetic microscopy

Haq, E. and Gokcan, H. and Banerjee, T. and Postma, F.M. and Siekman, M.H. and Jansen, R. and Lodder, J.C. (2004) Nanoscale magnetic hysteresis of Ni80Fe20/Au/Co trilayers using ballistic electron magnetic microscopy. Journal of Applied Physics, 95 (11). pp. 6930-6932. ISSN 0021-8979

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Abstract:	Ballistic electron magnetic microscopy is used to study spin-dependent hot-electron transport and local magnetic switching of ferromagnetic thin films grown on a Au/Si(100) collector. For Ni80Fe20 films, the collector current is a factor of 2 larger than for Co, consistent with the shorter hot-electron attenuation length of Co. For Ni80Fe20/Au/Co spin valves, the collector current is reduced by a factor of 5 when the relative magnetization of the ferromagnetic layers changes from parallel to antiparallel. By sweeping the applied magnetic field, we obtain nanoscale hysteresis loops, where the hot electrons are collected from an area of about 10 nm.
Item Type:	Article
Copyright:	© 2004 American Institute of Physics
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Transducers Science and Technology (TST)
Link to this item:	http://purl.utwente.nl/publications/62959
Official URL:	http://link.aip.org/link/doi/10.1063/1.1652394
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