Geodesic
Interaction of mutually perpendicular magnetic fields in HTSC
Matematičeskaâ fizika i kompʹûternoe modelirovanie, no. 3 (2015), pp. 55-62.

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In this article a problem of interaction of the crossed magnetic fields in superconductors is considered. Superconducting materials have nonlinear magnetic properties. It allows using a non-linear magnetic susceptibility for measurement of feeble magnetic fields. We place a wire of superconducting material in a constant parallel uniform magnetic field. Then we let through a wire the alternating current leak. Interaction of mutual and perpendicular variation magnetic fields, with adequate accuracy is described by Ginzburg–Landau's equations. Approximate solution of the written equations is received. The component of a magnetic field parallel to a wire contains a variable component. Frequency of a variable component of the magnetic field is equal to the doubled current frequency. Amplitude of the variable component of the magnetic field is proportional to strength of the constant magnetic field. The experimental installation for research of interaction of mutually perpendicular magnetic fields is created. The cylinder from HTSC of ceramics of the $\mathrm{Y {Ba}_2 {Cu}_3 O_{7-x}}$ was used as a sensor. Dependence of amplitude of the second harmonica of a variation magnetic field on strength of a constant magnetic field is received.
Keywords: superconductor, magnetometer, SQUID, crossed magnetic fields, nonlinear magnetic material.
Mots-clés : cryotron 
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A. F. Vasilyev; A. L. Yakimets. Interaction of mutually perpendicular magnetic fields in HTSC. Matematičeskaâ fizika i kompʹûternoe modelirovanie, no. 3 (2015), pp. 55-62. http://geodesic.mathdoc.fr/item/VVGUM_2015_3_a6/

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