Japanese Journal of Applied Physics · 1988 · 23 citations · 11 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsCrystal StructureSolid State PhysicsPhase TransitionsPowder MetallurgyPowder ProcessingSinteringSolid-state Phase TransitionsSuperconducting MaterialsCrystalline PolymorphismCrystalline StructureCuprate SuperconductorsPowder X-ray DiffractionSuperconducting CeramicsSuperconducting Phase TransitionsSuperconducting PropertiesX-ray Diffraction Analysis
The ac susceptibility χ=χ'- i χ'' was used for examining the superconducting nature of a two-step transition in a Bi-Sr-Ca-Cu-O specimen. The X-ray diffraction pattern indicates that the crystalline habit of our specimen is tetragonal ( a =3.81 Å, c =30.7 Å). Although both bulk and weakly coupled components appeared in the lower- T c phase of the sintered pellet, the latter phase was fully depressed by pulverization. The pulverization remarkably altered the transition profile of the higher- T c phase. The implications of these results are discussed.
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Sputter Deposition of BiSrCaCuO Thin Films
Masao Fukutomi, Junichi Machida, Yoshiaki Tanaka et al. · Japanese Journal of Applied Physics · 1988 · 692 citations
Filamentary Structure in Superconductors
E. Maxwell, Myron Strongin · Physical Review Letters · 1963 · 142 citations