Relaxation of ferromagnetic ordering in pseudoternary superconductors

Journal Article · Wed Aug 01 04:00:00 EDT 1984 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.30.1188· OSTI ID:6465940

Brossard, L; Torikachvili, M S; Maple, M B; Suhl, H; Majkrzak, C F; Shirane, G; Tachiki, M

The low-temperature phase diagrams of the superconducting and magnetic pseudoternary systems Ho/sub 1.2-x/R/sub x/Mo/sub 6/S/sub 8/ with R = Tb and Er have been determined by means of low-frequency ac magnetic susceptibility and neutron-diffraction measurements and are qualitatively described with a molecular-field model. A very slow transition from a ferromagnetic to a superconducting state was observed at 100 mK in Ho-rich Ho/sub 1.2-x/Er/sub x/Mo/sub 6/S/sub 8/ compounds with x values between 0.2 and 0.4. This unusual behavior can be interpreted in terms of the similarity of the free energies of the antiferromagnetic superconducting and normal ferromagnetic states at very low temperatures. Neutron-diffraction measurements on a Ho/sub 1.0/Tb/sub 0.2/Mo/sub 6/S/sub 8/ sample revealed the presence of a long-wavelength oscillatory magnetic phase which coexists with superconductivity, similar to the one that occurs in pure Ho/sub 1.2/Mo/sub 6/S/sub 8/.

• Research Organization: Institute for Pure and Applied Physical Sciences, University of California, San Diego, La Jolla, California 92093
• OSTI ID: 6465940
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 30:3; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
CHALCOGENIDES
COHERENT SCATTERING
DATA
DIAGRAMS
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY
ERBIUM COMPOUNDS
ERBIUM SULFIDES
EXPERIMENTAL DATA
FREE ENERGY
HOLMIUM COMPOUNDS
HOLMIUM SULFIDES
INFORMATION
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETISM
MATERIALS
MOLYBDENUM COMPOUNDS
MOLYBDENUM SULFIDES
NEEL TEMPERATURE
NEUTRON DIFFRACTION
NUMERICAL DATA
PHASE DIAGRAMS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
SCATTERING
SULFIDES
SULFUR COMPOUNDS
SUPERCONDUCTIVITY
TERBIUM COMPOUNDS
TERBIUM SULFIDES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE