Superconducting properties in the Li/sub 1+x/Ti/sub 2-x/O/sub 4/ system with the spinel structure

Journal Article · Thu Dec 01 04:00:00 EST 1988 · J. Solid State Chem.; (United States)

DOI:https://doi.org/10.1016/0022-4596(88)90264-2· OSTI ID:5998944

Ueda, Y; Tanaka, T; Kosuge, K; Ishikawa, M; Yasuoka, H

The spinel system Li/sub 1+x/Ti/sub 2/minus/x/O/sub 4/ was synthesized by a method differing from earlier ones, and the resistivities in magnetic fields were examined. The system was chemically homogeneous over the composition range 0 less than or equal to x less than or equal to 1/3 and no chemical instabilities were observed. The substitution of the Ti by the Li on the octahedral sites changes the electronic state of neighboring Ti ions from a conducting one to a localized state; consequently, nonconducting domains are produced in the conducting domain clusters. The superconducting properties of the system are discussed in terms of percolation paths through superconducting domains.

• Research Organization: Kyoto Univ. (Japan)
• OSTI ID: 5998944
• Journal Information: J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 77:2; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CRITICAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
LATTICE PARAMETERS
LITHIUM COMPOUNDS
LITHIUM OXIDES
MAGNETIC FIELDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS