Monte Carlo simulation of reorientation driven by oxygen transport in YBa sub 2 Cu sub 3 O sub 6. 5

Journal Article · Sat Jun 01 00:00:00 EDT 1991 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.43.13614· OSTI ID:5810802

Szabo, G ^[1]

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1. Central Research Institute for Physics, H-1525 Budapest, P.O. Box 49, Hungary (HU)

We studied the effect of an external field on the rearrangement of hopping particles in a quarter-filled lattice-gas model introduced to investigate the oxygen ordering in YBa{sub 2}Cu{sub 3}O{sub {ital x}}. In the fourfold-degenerate, cell-doubled phase of YBa{sub 2}Cu{sub 3}O{sub 6.5}, oxygen diffusion is anisotropic due to the presence of Cu-O chains. Monte Carlo simulations show that these chains prefer an orientation parallel to the applied field. In the presence of an applied field, the two possible chain directions are distinguished analytically by using a a simple mean-field approximation.

• OSTI ID: 5810802
• Journal Information: Physical Review, B: Condensed Matter; (USA), Vol. 43:16; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
ATOM TRANSPORT
COPPER OXIDES
OXYGEN
DIFFUSION
YTTRIUM OXIDES
ANISOTROPY
ELECTRIC FIELDS
MEAN-FIELD THEORY
MONTE CARLO METHOD
ORIENTATION
SIMULATION
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
ELEMENTS
NEUTRAL-PARTICLE TRANSPORT
NONMETALS
OXIDES
OXYGEN COMPOUNDS
RADIATION TRANSPORT
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties