Results 251 to 260 of about 265,660 (291)

Magnetic Bloch oscillations

EPL (Europhysics Letters), 2014
It is shown that the orbit quasi-center of a Bloch electron in a magnetic field is a conserved quantity. This is similar to the conservation of the quasi-momentum for an electron in a periodic potential. When an electric field is turned on, the orbit quasi-center oscillates in a similar way to the oscillations of a Bloch electron without a magnetic ...
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Rescuing magnetic oscillations by microwave shocks

Nature Materials
Takis Kontos
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Magnetic Domain Wall Oscillator

Applied Physics Express, 2008
We show that the rotation of a magnetic domain wall (DW) can be induced by the injection of a dc current into a magnetic wire with a DW. A novel three-terminal device that produces microwaves by utilizing the current-induced DW rotation is proposed. The frequency of the microwaves can be tuned by adjusting the current density through the wire, and the ...
Teruo Ono, Yoshinobu Nakatani
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Oscillating-field misalignment in magnetic resonance

Il Nuovo Cimento B Series 11, 1976
The influence of a r.f. field component parallel to the static magnetic field is investigated for magnetic resonance in a two-level system. For the shift of the resonant field accurate analytical expressions are derived. A continued-fraction solution is presented to include relaxation.
ALLEGRINI, MARIA, ARIMONDO, ENNIO
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Repairing Polymers Using Oscillating Magnetic Field

Advanced Materials, 2009
Repair of physically separated thermoplastic polymers containing γ-Fe2 O3 nanoparticles without sacrificing their mechanical properties is achieved by applying an oscillating magnetic field. As γ-Fe2 O3 nanoparticles oscillate at the frequency of the magnetic field, localized amorphous flow occur, and a permanent repair of physically separated ...
Corten, Cathrin C., Urban, Marek W.
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Oscillations of Elementary Magnets

Nature, 1947
In previous researches discussed in the papers “The Resonance of Magnetons”1 and “Band Distribution in Magnetic Spectra”2, it was established that there may be two types of magnetic dispersion bands. Whereas in the infra-low, acoustic and ultra-acoustic frequency-ranges the magnetic dispersion and absorption bands for ferromagnetic metals can be ...
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Oscillators using ring magnets

Physics Education, 1970
The strong dependence of the forces between magnets on their separation or orientation can be used to demonstrate some of the properties of oscillating systems. Ring magnets are very suitable for this type of demonstration because it is rather easy to arrange the mechanical constraint necessary to give a stable equilibrium position about which the ...
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Magnetically tunable TRAPATT oscillator

1974 IEEE International Solid-State Circuits Conference. Digest of Technical Papers, 1974
A TRAPATT oscillator fabricated on a ferrite substrate and tuned by a magnetic field will be described. Pulsed-power outputs of 50 W at 2 GHz and 30 W at 4 GHz with a frequency tuning range of 100 MHz have been achieved.
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Quantum oscillations in small magnetic particles

Physical Review B, 1992
Quantum oscillations in small magnetic particles, induced by external magnetic field, are considered. It is shown that, due to tunneling of the total magnetization ${\mathit{M}}_{0}$, the ground-state energy of the system oscillates as a function of the external-magnetic-field strength with period \ensuremath{\delta}H=(\ensuremath{\mu}/${\mathit{M}}_{0}
, Bogachek, , Krive
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Plasma Oscillations in a Magnetic Field

Journal of the Physical Society of Japan, 1965
The small amplitude plasma oscillations of a fully ionized plasma, in which collisions are neglected, in a constant external magnetic field are studied by expanding the velocity distribution about its equilibrium value. Use is made of full set of Maxwell's equation.
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