Thermometrics

Ampex Corporation

Therometrics, Inc.

Donald G Wickham

Carol Zwick Rosen

John Carter, Jr

David Sorg

Ho B Im

The present invention relates to making sensors by cutting pieces from a boule or ingot of a metal oxide single crystal. The sensors produced are also described.

Method of making wafer based sensors and wafer chip sensors

A nickel-cobalt-manganese oxide monocrystal having a cubic spinel structure over a broad concentration range of manganese/cobalt/nickel, including the entire possible range of manganese to nickel ratios, provided that the resulting monocrystal has a cubic spinel structure. A flux method is described for producing the monocrystals. Also disclosed are sensors, based on the monocrystals, having desirable electrical properties In particular, the sensors of the present invention are highly accurate temperature sensors or thermistors having high sensitivity, good reproducibility and improved aging characteristics. Performance of a sensor based on the monocrystal permits the preparation of a thermistor standard which can be used to evaluate the performance of ceramic devices.

Monocrystal of nickel-cobalt-manganese oxide having a cubic spinel

Monocrystalline nickel-cobalt-manganese-copper oxide having a cubic spinel structure over a broad range of concentration ratios of manganese/cobalt/nickel/copper, including methods of producing such monocrystals, particularly those having a quaternary cubic spinel structure. Sensors having desirable electrical properties are disclosed, which sensors comprise at least a portion of such monocrystals. In particular, such sensors are highly accurate temperature sensors or thermistors having high sensitivity, good reproducibility and improved aging characteristics.

Monocrystal of nickel-cobalt-manganese-copper oxide having cubic spinel

The invention relates to the growth of nickel-iron-manganese oxide monocrystals having a cubic spinel geometry. Methods of their growth and sensors constructed with same are also described.

Nickel-iron-manganese oxide single crystals

The invention relates to the growth of nickel manganese oxide monocrystals having a cubic spinel geometry. Methods of their growth and sensors constructed with same are also described.

Methods of growing nickel-manganese oxide single crystals

Nickel-manganese oxide single crystals

Lithium ferrites are sintered with a mixture of phosphorus pentoxide and vanadium pentoxide or bismuth trioxide to produce memory cores of high density and small grain size having high figures of merit. The lithium ferrites may contain additional ions such as zinc, nickel and manganese.

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Malibu, CA, United States of America

Donald G Wickham