Snap-Shots
of YBCO Preparation and Characterization (Summer 2001)
Group 1
Fig. 1(a)
Fig. 1(b)
Fig. 1(c)
In Figs. 1(a) to 1(c) Devor and Julius and show weighing YBCO starting materials, grinding the combined powders and initiating the solid state reaction process by placing the sample in a high temperature furnace.
Fig. 2. Julius and Devor at their desks writing reports and conducting literature searches.
Fig. 3.
Observation of levitation of a magnet above a superconductor (at temperature
below the critical temperature)- the Meissner Effect. The frost covered
gray cylinder is the
magnet. The black disk below it is the superconductor (YBCO).
In addition to this test, x-ray diffraction and Raman scattering measurements
were used to determine the chemical composition and properties of the reacted
powder.
