Physical Review Letters · 1979 · 56 citations · 8 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsPhase TransformationsSolid State PhysicsAlloysHigh-pressure ThermodynamicsHigh-temperature MaterialsMetalsPhase TransitionsSuperconducting MaterialsElectrical Resistance MeasurementHigh-pressure Phase BehaviorHigh-pressure Phase RelationsHigh-pressure Phase TransformationsHigh-pressure Phase TransitionsHigh-temperature Phase RelationsHigh-temperature SuperconductorsSuperconducting Critical Temperature
A phase transformation is observed in scandium metal at a pressure of approximately 170 kbar as seen from a rise of the electrical resistance by a factor of 4. The high-pressure phase (Sc II) is a superconductor. ${T}_{c}$ is found to increase with pressure from \ensuremath{\simeq} 50 mK at 186 kbar to \ensuremath{\simeq} 0.35 K at 210 kbar. Experimentally, sintered diamond anvils have been used in a six-lead Bridgman setup with internal manometer.
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