Peculiarities in the temperature dependence of the loss resistance of YBa2Cu3O<i>x</i> ceramics in the frequency range 105−107 Hz at <i>T</i> &gt; <i>T</i> <i>c</i>
V. M. DmitrievPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovM. N. OfitserovPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovN. N. PrentslauPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Kharkov
ABI
Abstract
It is found that at certain frequencies, the loss resistance in a yttrium ceramic sample at temperatures above the critical temperature increases with decreasing temperature (semiconductor behavior), remains unchanged or decreases (metal behavior). The imaginary component of the impedance of the ceramics is of metal type both with decreasing temperature, and with increasing frequency.
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