AC Complex Susceptibility of Superconducting La–Sr–Cu–O and Y–Ba–Cu–O Systems
نویسندگان
چکیده
منابع مشابه
ON THE FIELD COOLED SUSCEPTIBILITY OF SUPERCONDUCTING YBaCuO SAMPLES
Using a SQUID magnetometer, we have studied the magnetization of different sampls of high T, sintered superconductors in field cooled (FC) conditions. Depending on the sample, very different trends in the variation of the saturation value of the FC magnetization with the field have been observed; in particular for good samples it increases progressively with decreasing H. We ascribe the differe...
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Direct current SQUIDs based on YBaCuO thin film nanobridges have been investigated. Critical current densities Jc of the devices are up to 3310 6 A/cm at T577 K and show a temperature dependence of (12T/Tc) . High values of the voltage-flux modulation are observed ~8 mV peak to peak at 77 K, 45 mV at 4.2 K!. The temperature dependence of the SQUID modulation is found to be essentially different...
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AC magnetic measurements, in which an AC field is applied to a sample and the resulting AC moment is measured, are an important tool for characterizing many materials. Because the induced sample moment is time-dependent, AC measurements yield information about magnetization dynamics which are not obtained in DC measurements, where the sample moment is constant during the measurement time. This ...
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ژورنال
عنوان ژورنال: Japanese Journal of Applied Physics
سال: 1987
ISSN: 0021-4922,1347-4065
DOI: 10.7567/jjaps.26s3.1023