Publications
  • Cheng, X. M., Keavney, D. J., Buchanan, K. S., Divan, R. and Guslienko, K. Yu. Nonlinear vortex dynamics and transient domains in ferromagnetic disks. Phys. Rev. B 79, 172411 (2009).

  • Keavney, D. J., Cheng, X. M., Buchanan, K. S. Polarity reversal of a magnetic vortex core by a unipolar, non-resonant in-plane pulsed magnetic field. Appl. Phys. Lett. 94, 172506 (2009).

  • Tanase, M. Petford-Long, A. K., Heinonen, O., Buchanan, K. S., Sort, J. and Nogués, J. Magnetization reversal in circularly exchange-biased ferromagnetic disks. Phys. Rev. B 79, 014436 (2009).

  • 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.)

  • Buchanan, K. S., Hoffmann, A., Novosad, V., and Bader, S. D. Translational-mode dynamics of exchange-biased vortices. J. Appl. Phys. 103, 07B102 (2008).

  • Hoffmann, A., Sort, J., Buchanan, K. S., and Nogués, J. Exchange-biased magnetic vortices (invited). IEEE Transactions on Magnetics 44, 1968 - 1973 (2008).

  • Bollero, A., Dieny, B., Sort, J., Buchanan, K. S., Landis, S., and Nogués, J. Exchange bias effects in a nano-patterned system consisting of two perpendicularly-coupled ferromagnets. Appl. Phys. Lett. 92, 022508 (2008).

  • Sort, J., Buchanan, K. S., Pearson, J. E., Hoffmann, A., Menndez, E., Salazar-Alvarez, G., Baro, M. D., Miron, M., Rodamcq, B., Dieny, B., and Nogués, J. Tailoring the magnetization reversal of elliptical dots using exchange bias (invited). J. Appl. Phys. 103, 07C109 (2008).

  • Rose, V., Chen, X. M., Keavney, D. J., Freeland, J. W., Buchanan, K. S., Ilic, B., and Metlushko, V., The breakdown of the fingerprinting of vortices by hysteresis loops in circular multilayer ring arrays. Appl. Phys. Lett. 91, 132502 (2007). (Cover of September 2007 issue.)

  • 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., Fradin, F. Y., Guslienko, K. Yu., Grimsditch, M., Bader, S. D., and Novosad, V. Vortex dynamics in patterned ferromagnetic ellipses. J. Appl. Phys. 99, 08C707 (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).

  • Buchanan, K. S., Guslienko, K. Yu., Doran, A., Scholl, A., Bader, S. D. and Novosad, V. Magnetic remanent states and magnetization reversal in patterned tri-layer nanodots, Phys. Rev. B 72, 134415 (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).

  • Guslienko, K. Yu., Buchanan, K. S., Bader, S. D. and Novosad, V. Dynamics of coupled vortices in layered magnetic nanodots. Appl. Phys. Lett. 86, 223112 (2005).

  • Sort, J., Hoffmann, A., Chung, S.-H., Buchanan, K., Grimsditch, M., Baro, M. D., Dieny, B., and Nogues, J. Exchange biased vortices. Physical Review Letters 95, 067201 (2005). (Selected for the August 2005 issue of the Virtual Journal of Nanoscale Science & Technology.)

  • Buchanan, K. S., Guslienko, K. Yu., S.-B. Choe, A. Doran, A. Scholl, Bader, S. D. and Novosad, V. Magnetization reversal in patterned double-vortex structures. J. Appl. Phys. 97, 10H503 (2005).

  • Buchanan, K. S., Krichevsky, A., Freeman, M. R., and Meldrum, A. Iron nanocrystals in SiO2: Ultrafast magnetic relaxation and giant Faraday rotation. Phys. Rev. B. 70,174436 (2004). (Selected for the December 2004 issue of the Virtual Journal of Ultrafast Science.)

  • Zhu, X., Buchanan, K. S., Blois, C., Liu, Z., Freeman, M. R., and Meldrum, A. Thermal annealing effect on magnetic properties of Fe nanoparticles implanted in single crystal yttrium-stabilized zirconia. J. Appl. Phys. 97, 10A720 (2005).

  • Guslienko, K. Yu., Pishko, V., Novosad, V., Buchanan, K. S., and Bader, S. D. Quantized spin excitation modes in patterned ferromagnetic micro-stripe arrays. J. Appl. Phys. 97, 10A709 (2005).

  • Meldrum, A., Hryciw, A., Buchanan, K. S., Beltaos, A. M., Glover, M., Ryan, C. A. and Veinot, J. C. Two-dimensionally patterned silicon nanocrystal arrays. Optical Materials 27, 812-817 (2005).

  • Hryciw, A., Meldrum, A., Buchanan, K. S., and White, C. W. Effects of particle size and excitation spectrum on the photoluminescence of silicon nanocrystals formed by ion implantation. Nucl. Instr. Meth. B 222, 469 (2004).

  • Meldrum, A., Buchanan, K. S., Hryciw, A., and White, C. W. Micro-pixelated luminescent nanocrystals arrays synthesized by ion implantation. Adv. Mater. 16, 31 (2004).

  • Beaty, K. S., Meldrum, A., Franck, J. P., Sorge, K., Thompson, J. R., White, C. W., Zuhr, R. A., Boatner, L. A., and Honda, S. Controlling the microstructure and magnetic properties of ferromagnetic nanocrystals produced by ion implantation. Mater. Res. Soc. Symp. Proc 703, 331-336 (2002).

  • Meldrum, A., Beaty, K. S., Lam, M., White, C. W., Zuhr, R. A., and Boatner, L. A. Using ion beams to modify nanocrystalline composites: Co nanoparticles in sapphire. Mater. Res. Soc. Symp. Proc 703, 413-418 (2002).

  • White, C. W., Withrow, S. P., Budai, J. D., Boatner, L. A., Sorge, K. D., Thompson, J. R., Beaty, K. S., and Meldrum, A. Formation of ferromagnetic FePt nanoparticles by ion implantation. Mater. Res. Soc. Symp. Proc 704, 187-192 (2002).

  • White, C. W., Withrow, S. P., Budai, J. D., Boatner, L. A., Sorge, K. D., Thompson, J. R., Beaty, K. S., and Meldrum, A. Ferromagnetic FePt nanoparticles formed in Al2O3 by ion implantation. Nucl. Instr. Meth. B 191, 437-441 (2002).

  • Vallet, C. E., White, C. W., Withrow, S. P., Budai, J. D., Boatner, L. A., Sorge, K. D., Thompson, J. R., Beaty, K. S. and Meldrum, A. Magnetic force microscopy of ferromagnetic nanoparticles formed in Al2O3 and SiO2 by ion implantation. J. Appl. Phys. 92(10), 6200-6204 (2002).

  • Meldrum, A., Beaty, K. S., Boatner, L. and White, C. W. Ion-irradiation-induced amorphization of cadmium-niobate pyrochlore. Mater. Res. Soc. Symp. Proc 650, R5.4.1-6 (2001).

  • Beaty, K. S. and Schmitt, D. R. Repeatability of multimode Rayleigh-wave dispersion studies. Geophysics 68, 782-790 (2003).

  • Beaty, K. S., Schmitt, D. R., and Sacchi, M. Simulated annealing inversion of multi-mode Rayleigh wave dispersion curves for geological structure. Geophy. J. Internat. 151(2), 622-631 (2002).

  • Beaty, K. S., Perron, G., Kay, I., and Adam, E. DSISoft - A Matlab VSP processing package. Computers & Geosciences 28(4), 501-511 (2002).

  • Beaty, K. S. and Schmitt, D. R. A study of near-surface seasonal variability using Rayleigh wave dispersion. 70th Ann. Internat. Mtg: Soc. of Expl. Geophys., 1323-1326 (2000).

  • Cowan, M. L, Beaty, K., Page, J. H., Liu, Z. Y., and Sheng, P. Group velocity of acoustic waves in strongly scattering media: Dependence on the volume fraction of scatterers. Phys. Rev. E 58(5) Part B, 6626-6636 (1998).

CSU | Physics Department | Magnetics Labs Last updated 30-June-2009 by David Moffett
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