Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Horst Rogalla"'
Autor:
H.J.M. ter Brake, Dick Veldhuis, W. Jaszczuk, Horst Rogalla, J. Flokstra, Evert Pieter Houwman, A. Martinez
Publikováno v:
IEEE transactions on magnetics, 27(27), 2955-2958. IEEE
Various DC SQUID sensor configurations were developed for use in a 19-channel neuromagnetometer. Apart from the standard type, resistively and inductively shunted SQUIDs were made, allowing for a large screening factor beta (>1). In this way, signal
Publikováno v:
IEEE transactions on magnetics, 27(2), 2821-2823. IEEE
Due to the very-low-loss properties of ceramic superconductors, high-performance microwave resonators and filters can be realized. The fact that these devices may be operated at liquid nitrogen temperature facilitates integration with semiconductor d
Publikováno v:
IEEE Transactions on Magnetics. 23:1493-1496
For quasiparticle mixers for very high frequencies and ultrafast samplers, tunnel junctions with a large energy gap are needed. Large gap voltages should be possible with high-T c materials like Nb 3 Sn or Nb 3 Ge. We describe an in-situ preparation
Autor:
H. J. Hedbabny, Horst Rogalla
Publikováno v:
IEEE Transactions on Magnetics. 25:1231-1234
Stacks of up to three tunnel junctions were fabricated using the NbN-MgO technique. Different preparation methods were tested, and two gave favorable results. In the first one, the whole stack is prepared in situ and structured afterwards by lift-off
Publikováno v:
IEEE Transactions on Magnetics. 23:1275-1278
A superconducting switch was constructed and tested based on the microwave induced transition of a microbridge or long filament into the resistive flux-flow state. Resistance values of the order of 1 kΩ were obtained by connecting in series several
Publikováno v:
IEEE Transactions on Magnetics. 25:2328-2332
The electric conduction in the new cuprate superconductors suffers from intragrain and intergrain weak links. In transition metal oxides weak links show up in a specific chemistry, which can be measured by X-ray photoelectron spectroscopy and by Auge
Study of preparation techniques for a practical microbridge dc-SQUID structure fabricated from Nb3Ge
Publikováno v:
IEEE Transactions on Magnetics. 21:536-538
Tests with a small area Nb 3 Ge dc-SQUID structure revealed promising results: a wide operating temperature range extending up to 20.2 K was achieved with a best modulation depth of 15%. Here we describe development steps towards a more practical dev