Fuji Electric Co., Ltd.

Iii Holdings 1, LLC

Iii Holdings 2, LLC

Eiki Adachi

Yasushi Ogimoto

Haruo Kawakami

A spin valve element may include a plurality of magnetic element groups. Each magnetic element group may be formed, at least in part, by a plurality of magnetic elements being connected in parallel. Each magnetic element may include an intermediate layer and a pair of ferromagnetic layers sandwiching the intermediate layer. The plurality of magnetic element groups may be connected together in series or in parallel. The plurality of magnetic elements may be configured to undergo a microwave oscillation and are placed in proximity sufficient that oscillation signals are configured to be generated with the magnetic elements mutually synchronized. The proximity may include a range equal to a wavelength of the microwave oscillation.

Spin valve element and method of manufacturing same

A spin valve element including parallelly or serially connected magnetic element groups, each magnetic element group having a plurality of magnetic elements that each include an intermediate layer of an insulating member or a nonmagnetic member sandwiched by a pair of ferromagnetic layers. The plurality of magnetic elements are further connected either in series or in parallel.

A method for driving a spin valve element, including passing driving current through the spin valve element to generate an oscillation signal, and performing amplitude modulation of the driving current at a frequency lower than the oscillation frequency of oscillation signals. This amplitude modulation can be ON-OFF modulation, and the interval tin the conducting state of the ON-OFF modulation is made to satisfy the relation t&#x3c;D/&#x3b1;, where &#x3b1; is the thermal diffusivity of the heat diffusion portion, and D is the thickness of the heat diffusion portion.

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Sagamihara, Japan

Eiki Adachi