The critical state stability and oscillations in hard superconductors
نویسنده
چکیده
The limited thermomagnetic instabilities in the critical state have been investigated in hard superconductors under an incomplete penetration of the magnetic flux into the sample and under different external cooling conditions. A flat plate is considered in an external magnetic field parallel to the plate surface. Conditions have been found under which it is possible to observe the electric field and temperature oscillations in a sample; their period and number have been evaluated. The theory is compared with the reported experimental data.
منابع مشابه
Thermomagnetic effects , stability and oscillations in the critical state in hard superconductors
The influence of thermomagnetic (Ettingshausen and Nernst) effects on the stability and dynamics of the critical state in hard superconductors has been considered. Both the criteria for stability against flux jumps and the nature of a developing instability have been investigated in some simple cases. It is shown that thermomagnetic effects lead to essential changes in the dynamics of the criti...
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تاریخ انتشار 1980