Carl E. Patton

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Fermi-Pasta-Ulam recurrence through soliton dynamics has been realized. The experiment used a magnetic film strip-based active feedback ring. At some ring gain level, a wide spin wave pulse is self-generated in the ring. As the pulse circulates, it separates into two envelop solitons with different speeds. When the fast soliton catches up and collides with(More)
Keywords: Ferrites Spinel Garnet Hexaferrite Ferromagnetic resonance Pulsed laser deposition Liquid phase epitaxy Screen printing Negative index materials Microwave a b s t r a c t Next generation magnetic microwave devices will be planar, smaller, weigh less, and perform well beyond the present state-of-the-art. For this to become a reality advances in(More)
Magnetostatic backward volume spin-wave ͑SW͒ pulses have been cloned and trapped through the use of multiple, properly timed, parametric pumping ͑PP͒ pulses. The experiment was done with 30-ns-wide pulses at 5 GHz in a 7.1-␮m-thick yttrium iron garnet film. Well-timed, large-area, high-power, 2-ns-wide microwave pulses at 10 GHz were used to pump the SW(More)
The longitudinal magneto-optical Kerr effect is used to obtain a calibrated measure of the dynamic magnetization response over the ferromagnetic resonance (FMR) profile for in-plane magnetized Permalloy films excited with high power in-plane transverse microwave fields at 1.25 to 3.75 GHz and in-plane precession angles up to about 20 degrees. The data(More)
The manifestation of fractals in soliton dynamics has been observed for the first time. The experiment utilized self-generated spin-wave envelope solitons in a magnetic film based active feedback ring. At high ring gain, the soliton that circulates in the ring breathes in a fractal pattern. The corresponding power frequency spectrum shows a comb structure,(More)
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