Abstract
We have studied the possibility of introducing the high-temperature superconductivity into student experiments of general physics at (university) general education courses in an attempt to modernize them. In this paper, we describe the results of the following experiments : 1. Preparation of bulk samples, confirmation of Meissner effect, and measurement of critical temperature, T_c. 2. Measurement of temperature-dependence of electrical resistivity of a wire made by rolling Ag-sheath filled with a superconductor. The resistivity of such a wire is shown to decrease rapidly near T_c. 3. Superconductivity experiments usually require considerable time. In order to remedy such shortcoming a method of experiment was developed by which a superconductive sample is prepared and the phenomenon can be confirmed within about 50 minutes. Though this method is not suited for quantitative analysis, it provides an effective way in understanding the essence of the phonomena. Applicability of the high-temperature superconductivity in physics education can be expanded significantly by such a "quick experiment". 4. By heat-treating YBCO type superconductive substance at around 1OOO℃, a superconductive magnet was prepared. By combining the above experiments properly, the high-temperature superconductivity can be a modern and attractive experimental theme with versatile physics content.
