Influence of dynamic dislocation drag on amplitude dependences of damping decrement and modulus defect in lead
Journal Article
·
· Sov. Phys. - Solid State (Engl. Transl.); (United States)
OSTI ID:5937737
A study was made of the amplitude dependences of the damping decrement and the modulus defect in lead at low temperatures at frequencies of 100 kHz and 5 MHz. It was shown that in pure lead at high frequencies a change in the amplitude dependences of the damping decrement and the modulus defect under the superconducting transition is due mainly to the change in the losses caused by the dynamic drag of dislocations whereas in measurements at low frequencies the influence of the superconducting transition is due to the change in the conditions of dislocation unpinning from point defects. The influence of the dynamic dislocation drag on the amplitude dependences of the damping decrement and the modulus defect is calculated and a method is presented for experimental estimation of the contribution of dynamic effects to the amplitude-dependent internal friction.
- Research Organization:
- Institute of Solid State Physics, Academy of Sciences of the USSR, Chernogolovka, Moscow Oblast', Noginsk Region
- OSTI ID:
- 5937737
- Journal Information:
- Sov. Phys. - Solid State (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Solid State (Engl. Transl.); (United States) Vol. 23:6; ISSN SPSSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLITUDES
BOUNDARY CONDITIONS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DAMPING
DISLOCATIONS
DRAG
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
FREQUENCY RANGE
FRICTION
INTERNAL FRICTION
KHZ RANGE
KHZ RANGE 100-1000
LEAD
LINE DEFECTS
METALS
MHZ RANGE
MHZ RANGE 01-100
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SUPERCONDUCTIVITY
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLITUDES
BOUNDARY CONDITIONS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DAMPING
DISLOCATIONS
DRAG
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
FREQUENCY RANGE
FRICTION
INTERNAL FRICTION
KHZ RANGE
KHZ RANGE 100-1000
LEAD
LINE DEFECTS
METALS
MHZ RANGE
MHZ RANGE 01-100
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SUPERCONDUCTIVITY