PHYSICAL-PROPERTIES AND ENERGY-DISPERSIVE X-RAY-ANALYSIS OF Y1-XPRXBA2CU3O7-DELTA COMPOUNDS

The suppression of transition temperature in Y1-xPr(x)Ba2Cu3O7-delta w ith increasing praseodymium concentration x has given rise to a series of experimental investigations. By making use of the data from energy dispersive x-ray analysis, the ingredients of the materials in the cr ystal-like layers of the samples can be investigated in a systematic w ay. This provides sensible and useful clues to understand the composit ions of various samples. Scanning electron microscopy was used to stud y the relation between the doping concentration of praseodymium and th e grain size. Apart from this, the basic properties of the above-menti oned compound were studied in detail. Both the magnetic pair-breaking mechanism and the hole-filling mechanism can be investigated from thes e properties.