Vasilyev A.F., Yakimets A.L. Interaction of Mutually Perpendicular Magnetic Fields in HTSC
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http://dx.doi.org/10.15688/jvolsu1.2015.3.6
Vasilyev Aleksandr Fedorovich
Candidate of Physical and Mathematical Sciences, Associate Professor,
Department of Radiophysics,
Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation
Yakimets Andrey Leonidovich
Candidate of Physical and Mathematical Sciences, Associate Professor,
Head of Department of Radiophysics,
Volgograd State University
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Prosp. Universitetsky, 100, 400062 Volgograd, Russian Federation
Abstract. 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 YBa2Cu3O7-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.
Key words: superconductor, magnetometer, SQUID, cryotron, crossed magnetic fields, nonlinear magnetic material.
Interaction of Mutually Perpendicular Magnetic Fields in HTSC by Vasilyev A.F., Yakimets A.L. is licensed under a Creative Commons Attribution 4.0 International License.
Citation in English: Science Journal of Volgograd State University. Mathematics. Physics. №3 (28) 2015 pp. 55-62
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