Kristen Buchanan

Assistant Professor

B.Sc., University of Manitoba, 1998; M.Sc., Ph.D., University of Alberta 2000, 2004.

Nanomagnetism

My research explores lateral confinement and coupling effects in nanomagnets through both experimental investigations and numerical modeling. In addition to being an exciting subject of study from a fundamental perspective, nanomagnets are also important for the advancement of technology, for example, in spintronics devices, storage media, and for medical applications. My present work focuses on the magnetization reversal and spin excitations of patterned magnetic elements. For details on magnetics research at CSU see the Magnetic Materials and Applied Magnetics Laboaratory (MMAML) website and my group's website.

Selected Publications

• Buchanan, K. S., Grimsditch, M., Fradin, F. Y., Bader, S. D., and Novosad, V. Driven dynamic mode-splitting of the magnetic vortex translational resonance. Phys. Rev. Lett. 99, 267201 (2007). (Selected for the January 2008 issue of the Virtual Journal of Nanoscale Science & Technology.)


• Bader, S. D., Buchanan, K. S., Chung, S. -H., Guslienko, K. Yu., Hoffmann, A., Ji, Y., and Novosad, V. Issues in nanomagnetism. Superlattices and Microstructures 41, 72-80 (2007).


• Buchanan, K. S., Roy, P. E., Grimsditch, M., Fradin, F. Y., Guslienko, K. Yu., Bader, S. D., and Novosad, V. Magnetic field tunability of the vortex translational mode in micron-sized permalloy ellipses. Phys. Rev. B 74, 064404 (2006).


• Sort, J., Buchanan, K. S., Novosad, V., Hoffmann, A., Salazar-Alvarez, G., Baro, M. D., Dieny, B., and Nogues, J. Imprinting vortices into antiferromagnets. Phys. Rev. Lett. 97, 067201 (2006).


• Buchanan, K. S., Roy, P. E., Grimsditch, M., Fradin, F. Y., Guslienko, K. Yu., Bader, S. D., and Novosad, V. Soliton pair dynamics in patterned ferromagnetic ellipses. Nature Physics 1, 172-176 (2005).


• Novosad, V., Fradin, F. Y., Roy, P. E., Buchanan, K. S., Guslienko, K. Yu., and Bader, S. D. Magnetic Vortex Resonance in Patterned Ferromagnetic Dots, Phys. Rev. B 72, 024455 (2005). (Selected for the August 2005 issue of the Virtual Journal of Nanoscale Science & Technology.)


• Buchanan, K. S., Zhu, X., Meldrum, A., and Freeman, M. R. Ultrafast dynamics of a ferromagnetic nanocomposite. Nano Letters 5, 383 387 (2005).