Low-dimensional magnetic ordering and Ising- and XY-like anisotropy of Er/sup 3+/ in the system ErBa/sub 2/Cu/sub 3/O/sub x/ with 6

Journal Article · Mon May 01 04:00:00 EDT 1989 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.39.9099· OSTI ID:6182571

Simizu, S; Bellesis, G H; Lukin, J; Friedberg, S A; Lessure, H S; Fine, S M; Greenblatt, M

Magnetic ordering of Er/sup 3+/ ions in ErBa/sub 2/Cu/sub 8/O/sub x/ with 6.12less than or equal toxless than or equal to6.91 has been studied for both orthorhombic and tetragonal phases by means of magnetic-susceptibility and heat-capacity measurements. Superconductivity in the orthorhombic phase samples was confirmed by the onset of a diamagnetic susceptibility. The superconducting transition temperature T/sub c/ was observed to decrease from 92 to 55 K as x was reduced from 6.91 to 6.31. The tetragonal samples with x = 6.23 and 6.12 remained paramagnetic down to 1.2 K and showed no overt trace of diamagnetism. The states of Er/sup 3+/ ions in ErBa/sub 2/Cu/sub 3/O/sub 6/ and ErBa/sub 2/Cu/sub 3/O/sub 7/ were calculated by means of crystalline electric field (CEF) theory using both a point-charge model and scaled inelastic neutron scattering results for HoBa/sub 2/Cu/sub 3/O/sub 7/.

• Research Organization: Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213
• OSTI ID: 6182571
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 39:13; 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
ALKALINE EARTH METAL COMPOUNDS
ANISOTROPY
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHARGED PARTICLES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL FIELD
CRYSTAL LATTICES
CRYSTAL MODELS
CRYSTAL STRUCTURE
DIAMAGNETISM
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ERBIUM COMPOUNDS
ERBIUM IONS
ERBIUM OXIDES
IONS
ISING MODEL
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETISM
MATHEMATICAL MODELS
NEUTRON DIFFRACTION
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SCALING LAWS
SCATTERING
SPECIFIC HEAT
SUPERCONDUCTIVITY
TETRAGONAL LATTICES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE