Neutron scattering observations on the magnetic phases of rareearth ternary superconductors

Technical Report · Mon Jan 01 04:00:00 EST 1979

DOI:https://doi.org/10.2172/6154043· OSTI ID:6154043

Moncton, D E

A number of ternary compounds become superconducting even though they contain a chemically ordered sublattice of magnetic rare-earth ions. Studies of the physical properties of these materials have revealed anomalies below T/sub c/ which have been attributed to magentic ordering transitions. Usng neutron spectrometers at the Brookhaven National Laboratory, a group of us has demonstrated that simple magnetic structures with long-range order do occur, and we have solved some of the magnetic structures of these superconductors. Specifically, we have found that in DyMo/sub 6/S/sub 8/ and TbMo/sub 6/S/sub 8/ an antiferromagnetic structure coexists with superconductivity. In two other compounds, ErRh/sub 4/B/sub 4/ and HoMo/sub 6/S/sub 8/ we have found that the development of ferromagnetism is responsible for the quenching of superconductivity. A study of the critical magnetic neutron scattering near the superconducting ..-->.. ferromagnetic transitions shows the presence of fluctuations into a state with an oscillatory magnetization of wave length lambda = 100A.

• Research Organization: Bell Labs., Murray Hill, NJ (USA); Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: EY-76-C-02-0016
• OSTI ID: 6154043
• Report Number(s): BNL-25342; CONF-781114-9
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOY SYSTEMS
ANTIFERROMAGNETISM
BORIDES
BORON COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
DYSPROSIUM COMPOUNDS
DYSPROSIUM SULFIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ERBIUM BORIDES
ERBIUM COMPOUNDS
HOLMIUM COMPOUNDS
HOLMIUM SULFIDES
MAGNETISM
MOLYBDENUM COMPOUNDS
MOLYBDENUM SULFIDES
NEUTRON DIFFRACTION
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
RHODIUM BORIDES
RHODIUM COMPOUNDS
SCATTERING
SULFIDES
SULFUR COMPOUNDS
SUPERCONDUCTIVITY
TERBIUM COMPOUNDS
TERBIUM SULFIDES
TERNARY ALLOY SYSTEMS
TRANSITION ELEMENT COMPOUNDS