Phase-locking in double-point-contact spin-transfer devices

Article Abstract:

The magnetization oscillations induced by spin-transfer in two 80-nm-diameter giant-magneto-resistance point contacts in close proximity to each other can phase-lock into a single resonance over a frequency range from approximately less than 10 to greater than 24 Ghz for contact spacing of less than approximately 200 nm. Phase-locking might enable control of large arrays of coupled spin-transfer devices with increased power output for microwave oscillator applications.

Microwave IC Oscillators, Observations, Magnetization, Microwave oscillators, Parametrons

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An organic thyristor

Article Abstract:

The discovery of a giant nonlinear resistance effect in the conducting organic salt, the voltage-current characteristics of which are essentially the same as those of a conventional thyristor is reported. The present salt exhibits giant nonlinear resistance as a bulk phenomenon, whereas conventional thyristors consist of a series of diodes.

Thyristors, Usage, Organic salts

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Giant magneto-elastic coupling in multiferroic hexagonal manganites

Article Abstract:

A combination of several diffraction techniques is employed to analyze and explain the phenomenon of giant magneto-elastic coupling in multiferroic hexagonal manganites. The results show that the manganites undergo an isostructural transition with strong magneto-elastic decoupling, which causes the magneto-elastic coupling.

Analysis, Technology application, Diffraction, Mechanical properties, Magnetism, Structure, Manganese alloys, Spin coupling

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