Change in physical properties of superconducting molybdenum sulfides after irradiation and subsequent annealing

Journal Article · Thu Sep 01 00:00:00 EDT 1983 · Sov. Phys. - JETP (Engl. Transl.); (United States)

OSTI ID:6638534

Alekseevskii, N E; Mitin, A V; Samosyuk, V N; Firsov, V I

The changes in critical temperature T/sub c/, upper critical field H/sub c/2(T), and electrical resistivity rho(T) of Pb/sub 1-x/U/sub x/Mo/sub 6/S/sub 8/ (x< or =0.5) after thermal neutron irradiation (Phi< or =7 x 10/sup 18/ cm/sup -2/) and subsequent annealing at temperatures between 300 and 900 /sup 0/C have been investigated. It is found that with increasing uranium content the effect of irradiation on the critical parameters and rho(T) increases sharply and a correlation is observed between T/sub c/ and the ratio ..cap alpha.. = rho(300 K)/rho(15 K). The increase of electrical resistivity induced by irradiation and subsequent annealing at intermediate temperatures (T/sub a/<600 /sup 0/C) up to rho(15 K)> or =10/sup -2/..cap omega.. cm results in a change in sign of the derivative partialrho/partialT which is negative over practically the whole range from 15 to 300 K. After annealing at T/sub a/ = 700--900 /sup 0/C the quantities T/sub c/, H/sub c/2, and rho(T) return to approximately their previous values; in samples with x = 0.3 or 0.5 even a small increase of T/sub c/ and ..cap alpha.. is observed. The relation between possible alterations of the electronic structures of the compounds investigated and their characteristics in the superconducting and normal states is discussed.

• Research Organization: Institute of Physics Problems, Academy of Sciences of the USSR
• OSTI ID: 6638534
• Journal Information: Sov. Phys. - JETP (Engl. Transl.); (United States), Vol. 58:3
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
LEAD SULFIDES
ANNEALING
PHYSICAL RADIATION EFFECTS
SUPERCONDUCTIVITY
MOLYBDENUM SULFIDES
URANIUM SULFIDES
CRITICAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRONIC STRUCTURE
EXPERIMENTAL DATA
HIGH TEMPERATURE
NEUTRONS
QUANTITY RATIO
TRANSITION TEMPERATURE
VERY HIGH TEMPERATURE
ACTINIDE COMPOUNDS
BARYONS
CHALCOGENIDES
DATA
ELECTRICAL PROPERTIES
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HEAT TREATMENTS
INFORMATION
LEAD COMPOUNDS
MAGNETIC FIELDS
MOLYBDENUM COMPOUNDS
NUCLEONS
NUMERICAL DATA
PHYSICAL PROPERTIES
RADIATION EFFECTS
SULFIDES
SULFUR COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
URANIUM COMPOUNDS
360603* - Materials- Properties
360605 - Materials- Radiation Effects
656102 - Solid State Physics- Superconductivity- Acoustic
Electronic
Magnetic
Optical
&amp; Thermal Phenomena- (-1987)