Neutron scattering studies of ternary magnetic superconductors. Final report

Technical Report · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6789463

Lynn, J W

The rare-earth (RE) ternary superconductors belonging to the REMo6X8 (X=S,Se) and RERh4B4 classes of materials have provided the first unambiguous realizations in nature of the coexistence of superconductivity and long range magnetic order. The competitive nature of these two cooperative phenomena is illustrated by the ferromagnetic compounds HoMo6S8 and ErRh4B4, which first become superconducting and then order magnetically at lower temperatures. At first the superconductivity is able to prevent ferromagnetic alignment and a compromise long-wavelength oscillatory magnetization is established at intermediate temperatures. At sufficiently low temperatures, however, the superconductivity is destroyed as ferromagnetism sets in. Antiferromagnetic order, on the other hand, is found to be much less detrimental to superconductivity and there are now a rather large number of ternary materials where antiferromagnetism coexists with superconductivity. Inelastic scattering studies have shown that the crystal field splittings of the rare-earth ions in these materials are generally large in comparison with the magnetic energies.

• Research Organization: National Bureau of Standards, Washington, DC (USA)
• OSTI ID: 6789463
• Report Number(s): PB-82-264136
• Country of Publication: United States
• Language: English

Related Subjects

656102* -- Solid State Physics-- Superconductivity-- Acoustic
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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOY SYSTEMS
ALLOYS
BORIDES
BORON COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
CRYOGENICS
DIFFRACTION
ERBIUM COMPOUNDS
FERROMAGNETISM
HOLMIUM COMPOUNDS
MAGNETISM
MOLYBDENUM ALLOYS
NEUTRON DIFFRACTION
PLATINUM METAL ALLOYS
RARE EARTH COMPOUNDS
RHODIUM ALLOYS
SCATTERING
SULFIDES
SULFUR COMPOUNDS
SUPERCONDUCTORS
TERNARY ALLOY SYSTEMS