Search Results - "Ozatay, O."

Magnetic Radial Vortex Stabilization and Efficient Manipulation Driven by the Dzyaloshinskii-Moriya Interaction and Spin-Transfer Torque by Siracusano, G, Tomasello, R, Giordano, A, Puliafito, V, Azzerboni, B, Ozatay, O, Carpentieri, M, Finocchio, G

“…Solitons are very promising for the design of the next generation of ultralow power devices for storage and computation. The key ingredient to achieving this…”
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Magnetic vortex oscillator driven by d.c. spin-polarized current by Krivorotov, I. N, Buhrman, R. A, Pribiag, V. S, Fuchs, G. D, Braganca, P. M, Ozatay, O, Sankey, J. C, Ralph, D. C

“…Transfer of angular momentum from a spin-polarized current to a ferromagnet provides an efficient means to control the magnetization dynamics of nanomagnets. A…”
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Magnetic anisotropy switching induced by shape memory effect in NiTi/Ni bilayer by Kyianytsia, A., Ponçot, M., Letoffe, A., Boulet, P., Migot, S., Ghanbaja, J., Cinar, I., Lima de Miranda, R., Bechtold, C., Kierren, B., Ozatay, O., Hauet, T.

“…Strain modulation during a two-way shape memory effect (TWSME) in a sputtered nitinol NiTi is used to reliably induce and switch by 90° a uniaxial magnetic…”
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Magnetic switching driven by nanosecond scale heat and magnetic field pulses: An application of macrospin Landau-Lifshitz-Bloch model by Kilic, U., Finocchio, G., Hauet, T., Florez, S. H., Aktas, G., Ozatay, O.

“…High-temperature (near Curie-point) magnetization-behavior in materials with strong-perpendicular-magnetocrystalline-anisotropy has recently gained importance…”
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Sidewall oxide effects on spin-torque- and magnetic-field-induced reversal characteristics of thin-film nanomagnets by Ozatay, O, Gowtham, P. G, Tan, K. W, Read, J. C, Mkhoyan, K. A, Thomas, M. G, Fuchs, G. D, Braganca, P. M, Ryan, E. M, Thadani, K. V, Silcox, J, Ralph, D. C, Buhrman, R. A

“…The successful operation of spin-based data storage devices depends on thermally stable magnetic bits. At the same time, the data-processing speeds required by…”
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Spin-torque-induced rotational dynamics of a magnetic vortex dipole by Finocchio, G., Ozatay, O., Torres, L., Buhrman, R. A., Ralph, D. C., Azzerboni, B.

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Spin-torque ferromagnetic resonance measurements of damping in nanomagnets by Fuchs, G. D., Sankey, J. C., Pribiag, V. S., Qian, L., Braganca, P. M., Garcia, A. G. F., Ryan, E. M., Li, Zhi-Pan, Ozatay, O., Ralph, D. C., Buhrman, R. A.

“…The authors directly measure the magnetic damping parameter α in thin-film CoFeB and Permalloy (Py) nanomagnets at room temperature using a recently developed…”
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Reducing the critical current for short-pulse spin-transfer switching of nanomagnets by Braganca, P. M., Krivorotov, I. N., Ozatay, O., Garcia, A. G. F., Emley, N. C., Sankey, J. C., Ralph, D. C., Buhrman, R. A.

“…We have fabricated permalloy∕copper∕permalloy nanopillar spin valves designed to reduce the critical current for spin-transfer switching while maintaining…”
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Time-resolved spin-torque switching and enhanced damping in permalloy/Cu/permalloy spin-valve nanopillars by Emley, N C, Krivorotov, I N, Ozatay, O, Garcia, A G F, Sankey, J C, Ralph, D C, Buhrman, R A

“…We report time-resolved measurements of current-induced reversal of a free magnetic layer in Permalloy/Cu/Permalloy elliptical nanopillars at temperatures…”
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Enhancement in spin-torque efficiency by nonuniform spin current generated within a tapered nanopillar spin valve by Braganca, P. M., Ozatay, O., Garcia, A. G. F., Lee, O. J., Ralph, D. C., Buhrman, R. A.

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Micromagnetic Modeling of Magnetization Reversal in Nano-Scale Point Contact Devices by Finocchio, G., Ozatay, O., Torres, L., Carpentieri, M., Consolo, G., Azzerboni, B.

“…This paper deals with micromagnetic model of magnetization reversal in nano scale-point contact devices driven by nonuniform injection of a spin-polarized…”
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Strong linewidth variation for spin-torque nano-oscillators as a function of in-plane magnetic field angle by Thadani, K. V., Finocchio, G., Li, Z.-P., Ozatay, O., Sankey, J. C., Krivorotov, I. N., Cui, Y.-T., Buhrman, R. A., Ralph, D. C.

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Andreev reflection measurements of spin polarization by Chalsani, P., Upadhyay, S. K., Ozatay, O., Buhrman, R. A.

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Spin transfer induced coherent microwave emission with large power from nanoscale MgO tunnel junctions by Houssameddine, D., Florez, S. H., Katine, J. A., Michel, J.-P., Ebels, U., Mauri, D., Ozatay, O., Delaet, B., Viala, B., Folks, L., Terris, B. D., Cyrille, M.-C.

“…In low resistance-area product MgO magnetic tunnel junction nanopillars, we observe high integrated power (up to 43nW), narrow linewidth (down to 10MHz), spin…”
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Coherent and incoherent spin torque oscillations in a nanopillar magnetic spin-valve by Braganca, P. M., Lee, O. J., Ozatay, O., Liu, L., Finocchio, G., Ralph, D. C., Buhrman, R. A.

“…We report enhanced spin-torque oscillator results obtained in spin-valve nanopillars. When biased within the optimal range of a moderate, ≤600 Oe, hard axis…”
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Effects of radio-frequency current on spin-transfer-torque-induced dynamics by Florez, S. H., Katine, J. A., Carey, M., Folks, L., Ozatay, O., Terris, B. D.

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Probing activation energy barrier distribution for reversal of strongly exchange-coupled magnetic multilayer thin films by Ozatay, O., Hauet, T., Florez, S. H., Katine, J. A., Moser, A., Thiele, J.-U., Folks, L., Terris, B. D.

“…We demonstrate a measurement technique with zero-applied magnetic field to deduce and spatially map the activation energy barrier distribution of strongly…”
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Spin transfer by nonuniform current injection into a nanomagnet by Ozatay, O., Emley, N. C., Braganca, P. M., Garcia, A. G. F., Fuchs, G. D., Krivorotov, I. N., Buhrman, R. A., Ralph, D. C.

“…We have used nanofabrication techniques to incorporate an ∼ 20 - 30 nm diameter nanoaperture within a 150 × 250 nm 2 elliptical magnetic multilayer to enable…”
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Probing activation energy barrier distribution for reversal of strongly exchange-coupled magnetic multilayer thin films by Ozatay, O, Hauet, Thomas, S.H., Florez, Katine, J. A., Moser, A, Thiele, J.-U, Folks, L, Terris, B. D.

“…We demonstrate a measurement technique with zero-applied magnetic field to deduce and spatially map the activation energy barrier distribution of strongly…”
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Analytical electron microscopy study of growth mechanism for smoothing of metallic multilayer thin films by Ozatay, O., Mkhoyan, K. A., Thomas, M. G., Fuchs, G. D., Silcox, J., Buhrman, R. A.

“…We have used scanning transmission electron microscopy and electron energy-loss spectroscopy techniques to study the nature of interfacial interactions in a Ta…”
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