Superconducting properties of a single-crystal sphere of ErRh sub 4 B sub 4

Journal Article · Sun Oct 01 04:00:00 EDT 1989 · Physical Review (Section) B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.40.6548· OSTI ID:5486111

Behroozi, F ^[1]; Hall, L N; Crabtree, G W; Hinks, D G ^[2]

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1. Biomolecular Engineering Branch, Naval Research Laboratory, Washington, D.C. 20375 (US)
2. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439

We report on the superconducting and magnetic properties of a single-crystal sphere of the primitive tetragonal phase of ErRh{sub 4}B{sub 4}. Our data consist of magnetization and susceptibility measurements in fields up to 50 kOe and at temperatures down to 0.4 K. The crystal exhibits extreme anisotropy in its response to a magnetic field. It is a weak paramagnet when the external field is along the tetragonal {ital {bar c}} axis but reverts to a strong paramagnet when the field is in the basal plane. The magnetization curves reveal a first-order phase transition at {ital H}{sub {ital c}2} when the field is in the basal plane. Evidence for a temperature domain in which superconductivity and long-range ferromagnetic order appear to coexist is also presented. The magnetization curves are further analyzed to obtain the critical fields, the Ginzburg-Landau parameters, Curie plot, and the ferromagnetic moment of the system.

• OSTI ID: 5486111
• Journal Information: Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 40:10; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
BORIDES
BORON COMPOUNDS
CRITICAL FIELD
CRYSTAL FIELD
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ERBIUM BORIDES
ERBIUM COMPOUNDS
GINZBURG-LANDAU THEORY
LOW TEMPERATURE
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETISM
MAGNETIZATION
MEDIUM TEMPERATURE
PARAMAGNETISM
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
RHODIUM BORIDES
RHODIUM COMPOUNDS
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
TETRAGONAL LATTICES
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE