Superconducting and normal state properties of Li/sub 1+x/Ti/sub 2-x/O/sub 4/ spinel compounds. II. Low-temperature heat capacity

Journal Article · Fri Oct 01 04:00:00 EDT 1976 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00654828· OSTI ID:7140060

McCallum, R W; Johnston, D C; Luengo, C A; Maple, M B

Heat capacity data are reported which confirm as a bulk effect the previously reported superconductivity in LiTi/sub 2/O/sub 4/. These data also establish LiTi/sub 2/O/sub 4/ as a weak coupling d-band superconductor with superconducting state properties well described by the Bardeen--Cooper--Schrieffer theory of superconductivity. The properties of LiTi/sub 2/O/sub 4/ are compared with those of other superconducting spinel compounds, and the composition dependence of T/sub c/ for Li/sub 1+x/Ti/2-x/O/sub 4/ is discussed. The disappearance of superconductivity for x greater than or approximately equal to 0.1 was found to be correlated with a rapid decrease in the normal-state linear heat capacity coefficient.

• Research Organization: Univ. of California, San Diego, La Jolla
• OSTI ID: 7140060
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 25:1/2; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
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& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BCS THEORY
CHALCOGENIDES
CHEMICAL COMPOSITION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
LITHIUM COMPOUNDS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SPECIFIC HEAT
SPINELS
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS