Upper critical field H c2 and Hall coefficient R H in superconducting per-ovskite M gCN i 3 have been studied. The normal state ρ(T) behavior is similar to that observed in oxide perovskite (Ba, K)BiO 3 (BKBO), in which ρ(T) fits well curve predicted by Bloch-Grüneisen theory consistently with electron-phonon scattering. H c2 (T), determined from the onset of the resis-tive superconducting tran...

An X-ray diffraction technique was used to measure the residual stress in the surface of a specimen containing a coating of a NijAl intermetallic compound produced bythe SHS (Self-propagation High temperature Synthesis) method. The Ni3Al was using the coating material for spherical carbon cast iron substrate and austenite stainless steel substrate. Differences between the coefftcient of thermal...