High-pressure phases in B group element alloys: a new sort of electronic phase
General relationships are discussed for phase formation in B group element alloys with increasing pressure. The main tendency is determined by the homology rule: the effect of pressure is to change the phase equilibria in the same way as when one component is replaced by a heavier element in the same group. The sequence of relative configurations of stability regions for intermediate phases in the phase diagrams depends on the electron density. As the mean number of electrons in the alloy increases, there is a sequence of phases, accompanied by a decrease in the coordination number and packing density of the structure. Phases with identical structures occur in various systems for similar values of the electron density per atomic volume. Isostructural phases in various systems with equal electron densities have similar values of the transition temperature to the superconducting state. These B--B phases, whose crystal structure and properties are governed by the electron density factor, form a new series of electronic phases of the Hume-Rothery type.
- Research Organization:
- Institute of Solid-State Physics, Academy of Sciences of the USSR, Chernogolovka, Moscow Province
- OSTI ID:
- 5581920
- Journal Information:
- Sov. Phys. - Solid State (Engl. Transl.); (United States), Vol. 24:9
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BINARY ALLOY SYSTEMS
CRYSTAL STRUCTURE
PHASE TRANSFORMATIONS
SUPERCONDUCTIVITY
COMPRESSION
DIFFERENTIAL THERMAL ANALYSIS
ELECTRON DENSITY
EQUILIBRIUM
PHASE DIAGRAMS
PRESSURE DEPENDENCE
QUENCHING
STABILITY
VARIATIONS
ALLOY SYSTEMS
DIAGRAMS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
PHYSICAL PROPERTIES
THERMAL ANALYSIS
360102* - Metals & Alloys- Structure & Phase Studies
360104 - Metals & Alloys- Physical Properties
656100 - Condensed Matter Physics- Superconductivity