Forschungszentrum Julich Gmbh

Other

Ulrich Poppe

Helmut Soltner

Mikhail Faley

Knut Urban

Chunlin Jia

Horst Halling

Egon Zimmermann

Walter Glaas

Norbert Klein

Klaus Schieber

Bernd Jungbluth

Ricardo Hojczyk

Jin-Won Seo

Yuri Divin

Indra Ghosh

Rolf Speen

Klaus W Kehr

Robert L Fagaly

Kiaresch Mussawisade

Thomas Wichmann

The invention relates to a magnetic flow sensor () comprising a) a loop-shaped magnetic field conductor comprising a point () which expands to form a bar or a film (), a loop-shaped part () and at least one part () which guides back the magnetic field lines of the probe, b) SQUID (), c) and a diaphragm () comprising a hole (), whereby the part (&#x2033;) which guides the magnetic field lines of the probe back to the loop-shaped magnetic field conductor is connected to the diaphragm ().

Magnetic flow sensor comprising a magnetic field conductor and a hole diaphragm

The invention concerns a tunable cavity resonator that comprises a resonator body ( ) defining a cavity ( ), a tuning plate ( ) whose position with respect to the resonator body ( ) is modifiable and which influences the resonance frequency (&ohgr; ) of the cavity resonator, and an adjustment device ( ) for mechanically changing the position of the tuning plate ( ), which is characterized in that a conversion ratio mechanism ( ) couples the adjustment device ( ) to the tuning plate ( ) in terms of movement and converts a linear excursion (&Dgr;x ) generated by the adjustment device ( ), at a predefined ratio (U), into a reduced linear excursion (&Dgr;x ) that acts on the tuning plate ( ), the conversion ratio mechanism ( ) comprising a first spring element ( ) whose end toward the adjustment device is deflectable with the linear excursion (&Dgr;x ) generated by the adjustment device ( ), and a second spring element ( ) which impinges with an opposing force on the end of the first spring element ( ) remote from the adjustment device.

Tuneable cavity resonator

The invention relates to a component having a rectifying function, fulfilled by means of charge transfer by ions. To this end, the component is composed of multiple layers which have, successively, an asymmetric energy level course, and an electric field applied to these multiple layers.

Component with rectifying function, fulfilled by means of charge transport by ions

The invention concerns a layered arrangement comprising at least one layer based on a high-temperature superconductive material with at least one unit cell having a CuO plane, the layer being connected to a non-supeconductive layer. A modified interface layer is provided between the two layers. Alternatively, at least one of the contacting layers can be modified in the interface region. Modification can be brought about by doping with metallic ions or implantation.

Layered arrangement and component containing the latter

The invention relates to a series of layers containing at least one layer on the basis of REBa,CU,O7,or with a comparable crystallographic structure, wherein said layer is connected to a non-superconductive layer. The only material chosen for the non-superconductive layer is material containing atomic components which are chemically compatible with the superconductive material of the high temperature superconductive layer. Such a series of layers enables a multilayer system or also a cryogenic component, e.g. a Josephson contact, to be formed.

Series of layers and component containing such

Layer structure with an epitaxial, non-c-axis oriented HTSC thin film

c-axis oriented YBa.sub.2 Cu.sub.3 O.sub.7 layers are grown with intervening SrTiO.sub.3 layers bridged over steps at which there is a transformation to a-axis crystal-oriented growth. The multilayer superconductor has YBa.sub.2 Cu.sub.3 O.sub.7 layers which are not thicker than 500 nm while the intervening layers of SrTiO.sub.3 have thicknesses of 20 to 30 nm.

Method of producing an SrTiO.sub.3 /YBa.sub.2 Cu.sub.3 O.sub.7 layer

Growing community of inventors

Düren, Germany

Ulrich Poppe