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Full-Text Articles in Physical Sciences and Mathematics
Critical Phenomena From Diamagnetic Signal In High Tc Perovskites, Juana Acrivos, M. Chen Lei
Critical Phenomena From Diamagnetic Signal In High Tc Perovskites, Juana Acrivos, M. Chen Lei
Faculty Publications, Chemistry
Critical phenomena in nearly two-dimensional high Tc superconductors are detected by induction measurements of the shielding current produced by bulk quantization of flux vs Hz.
Interaction Of Pyridine With Ba2casr2cu20x, Juana Acrivos, C. Lin
Interaction Of Pyridine With Ba2casr2cu20x, Juana Acrivos, C. Lin
Faculty Publications, Chemistry
The adsorption of of pyridine on single crystals of Bi2CaSr2Cu2Ox has been followed by optical microscopy on the crystal surface, where a blue solution is formed as a first step of reaction. The superconducting properties of the single crystal and its structure were monitored by ac susceptibility and by x-ray diffraction measurements. The results (as observed by the growth of the blue solution boundary versus time with Daa = 3.7x10-10 cm2/s.) indicate that the reaction starts at nucleation sites on the basal surface of the crystal. The edges of the crystal also show blue nucleation sites but these do not …