Magnetic superconductors: a review

Journal Article · Fri Jan 01 04:00:00 EST 1988 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00683246· OSTI ID:7146240

Kakani, S L; Upadhyaya, U N

The recent discovery of superconductivity in some rare earth ternary and actinide compounds has led to considerable experimental and theoretical activity in the field of magnetic superconductors. The ternary compounds ErRh/sub 4/B/sub 4/ and HoMo/sub 6/S/sub 8/ exhibit reentrant superconductivity. Experimental results indicate that superconductivity and long-range ferromagnetic order coexist in a very narrow range of temperature in these two systems. Superconductivity and antiferromagnetic order truly coexist in several rare earth ternary compounds. The most important result is the anomalous behavior of the upper critical field in the vicinity of the Neel temperature. NdRh/sub 4/B/sub 4/ displays two antiferromagnetic transitions below the superconducting transition. The pseudoternary series Eu/sub x/Sn/sub 1-x/Mo/sub 6/S/sub 8/ containing small amounts of Br or Se exhibits the novel phenomenon of magnetic field-induced superconductivity. The compound Y/sub 9/Co/sub 7/ exhibits very weak itinerant ferromagnetic superconductivity. Several cerium- and uranium-based intermetallic compounds, usually known as heavy-electron metals, have been found to exhibit heavy-fermion superconductivity, characterized by a specific heat at low temperature that is two to three orders of magnitude larger than in ordinary transition metals. Several phenomenological and microscopic theories have appeared to explain the observed exciting properties of these magnetic superconductors. A brief survey of experimental and theoretical activity in this field is presented.

• Research Organization: MLV Government College, Bhilwara (India)
• OSTI ID: 7146240
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 70:1-2; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360104* -- Metals & Alloys-- Physical Properties
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
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360602 -- Other Materials-- Structure & Phase Studies
360603 -- Materials-- Properties
ACTINIDE ALLOYS
ACTINIDE COMPOUNDS
ALLOYS
ANTIFERROMAGNETISM
BERYLLIUM ALLOYS
BORIDES
BORON COMPOUNDS
CHALCOGENIDES
COBALT ALLOYS
CRITICAL FIELD
DOCUMENT TYPES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC SPECIFIC HEAT
ERBIUM BORIDES
ERBIUM COMPOUNDS
FERMIONS
FERROMAGNETISM
HOLMIUM COMPOUNDS
HOLMIUM SULFIDES
INTERMETALLIC COMPOUNDS
MAGNETIC FIELDS
MAGNETISM
MOLYBDENUM COMPOUNDS
MOLYBDENUM SULFIDES
ORDER PARAMETERS
ORDER-DISORDER TRANSFORMATIONS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
REVIEWS
RHODIUM BORIDES
RHODIUM COMPOUNDS
RUTHENIUM COMPOUNDS
SELENIDES
SELENIUM COMPOUNDS
SPECIFIC HEAT
SULFIDES
SULFUR COMPOUNDS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
THORIUM ALLOYS
TRANSITION ELEMENT COMPOUNDS
URANIUM ALLOYS