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Neutron scattering studies of the coexistence of long-range magnetic order and superconductivity in Dy/sub 1/ /sub 2/Mo/sub 6/S/sub 8/ and Tb/sub 1/ /sub 2/Mo/sub 6/S/sub 8/

Conference ·
OSTI ID:6515497
; ; ; ;
Both Dy/sub 1/ /sub 2/Mo/sub 6/S/sub 8/ and Tb/sub 1/ /sub 2/Mo/sub 6/S/sub 8/ are superconducting below T/sub c/ = 2.05 K. Neutron scattering studies show that these compounds in zero applied magnetic field develop long-range antiferromagnetic order (greater than 300 A) at T/sub M/ = 0.4 K and T/sub M/ = 1.0 K, respectively, which does not destroy the superconducting state. Magnetization measurements at temperatures below T/sub M/ suggest the development of ferromagnetic order as the applied magnetic field increases. In the case of Tb/sub 1/ /sub 2/Mo/sub 6/S/sub 8/ the neutron data show long-range ferromagnetic order developing for H greater than or equal to H/sub c2/ = 1.9 kOe where H/sub c2/ is the upper critical field for superconductivity. However, for Dy/sub 1/ /sub 2/Mo/sub 6/S/sub 8/ long-range ferromagnetic order begins to develop at H = 200 Oe, a field much less than H/sub c2/ = 1.2 kOe. As the ferromagnetic intensity increases, the antiferromagnetic intensity decreases. Between H = 200 Oe and H = 1.2 kOe both ferromagnetic and antiferromagnetic order occur with the sample in the superconducting state.
Research Organization:
Brookhaven National Lab., Upton, NY (USA); Bell Labs., Murray Hill, NJ (USA); Geneva Univ. (Switzerland)
DOE Contract Number:
EY-76-C-02-0016
OSTI ID:
6515497
Report Number(s):
BNL-25243; CONF-781114-7
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
654003 -- Radiation & Shielding Physics-- Neutron Interactions with Matter
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
CHALCOGENIDES
COHERENT SCATTERING
CRITICAL FIELD
DIFFRACTION
DYSPROSIUM COMPOUNDS
DYSPROSIUM SULFIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FERROMAGNETISM
MAGNETIC FIELDS
MAGNETISM
MAGNETIZATION
MOLYBDENUM COMPOUNDS
MOLYBDENUM SULFIDES
NEUTRON DIFFRACTION
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SCATTERING
SULFIDES
SULFUR COMPOUNDS
SUPERCONDUCTIVITY
TERBIUM COMPOUNDS
TERBIUM SULFIDES
TRANSITION ELEMENT COMPOUNDS