Proximity detector circuits: An alternative to tunnel diode oscillators for contactless measurements in pulsed magnetic field environments | Zendy

M. M. Altarawneh | Zendy; C. H. Mielke | Zendy; J. S. Brooks | Zendy

Open Access

Proximity detector circuits: An alternative to tunnel diode oscillators for contactless measurements in pulsed magnetic field environments

Author(s) -

M. M. Altarawneh,

C. H. Mielke,

J. S. Brooks

Publication year - 2009

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.3152219

Subject(s) - tunnel diode , detector , electronic circuit , diode , inductor , optoelectronics , rlc circuit , magnetic field , physics , electrical engineering , materials science , circuit design , voltage controlled oscillator , voltage , optics , capacitor , engineering , quantum mechanics

A new radio frequency oscillator circuit based on a proximity detector integrated circuit is described as an alternative for the traditional tunnel diode oscillator used for pulsed magnetic field measurements at low temperatures. The new circuit has been successfully applied to measure the superconducting upper critical field in Ba{sub 0.55}K{sub 0.45}Fe{sub 2}As{sub 2} single crystfl.ls up to 60 T. The new circuit design avoids many of the problems associated with tunnel diode circuits while keeping the advantages of contact less measurements in pulsed magnets

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