Resistivity of shock-compressed ytterbium
Results are reported of an experimental investigation of the electric conductivity of shock-compressed ytterbium in the pressure range up to 220 kbar. It is shown that up to approx.30 kbar the resistivity of ytterbium increases with pressure, and the ytterbium acquires semiconducting properties. At pressures on the order of 20 to 30 kbar the ytterbium undergoes a phase transition and becomes metallic again. Further increase of the shock-loading amplitude leads, at 80--150 kbar, to a sharp increase of the ytterbium resistivity, thus attesting to still another transition due to a realignment of the electron structure, a transition not heretofore observed under static compression conditions. The temporal characteristics of the aforementioned transitions were measured under actual shock-loading conditions. It is shown that raising the temperature and increasing the intensity of the shear deformations accelerates the transitions and decreases the values of the corresponding critical pressures.
- OSTI ID:
- 6666069
- Journal Information:
- Sov. Phys. - JETP (Engl. Transl.); (United States), Journal Name: Sov. Phys. - JETP (Engl. Transl.); (United States) Vol. 46:1; ISSN SPHJA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360103 -- Metals & Alloys-- Mechanical Properties
360104* -- Metals & Alloys-- Physical Properties
CRYSTAL-PHASE TRANSFORMATIONS
DYNAMIC LOADS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
ELEMENTS
METALS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
RARE EARTHS
SHEAR
SHOCK WAVES
TEMPERATURE DEPENDENCE
VERY HIGH PRESSURE
YTTERBIUM