Dynamics of oxygen ordering in the cell-doubled phase of YBa{sub 2}Cu{sub 3}O{sub 6+{ital x}}

Journal Article · Thu Aug 01 04:00:00 EDT 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.4357· OSTI ID:286704

Kundrotas, P J; Tornau, E E; Rosengren, A ^[1]

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1. Department of Theoretical Physics, The Royal Institute of Technology, S--100 44 Stockholm (Sweden)

The dynamics of domain growth, related to oxygen ordering into the cell-doubled orthorhombic phase of YBa{sub 2}Cu{sub 3}O{sub 6+{ital x}}, was studied. The growth, described using Monte Carlo simulations of the asymmetric next-nearest-neighbor interaction model without impurities, after annealing and quench from finite temperatures is found to be different at early and late times. At early times of domain growth a growth exponent {ital n}{approx_equal}0.25 is observed for both nearest-neighbor (NN) and next-nearest-neighbor diffusion and {ital n}{approx_equal}0.15 for NN diffusion only. At late times the growth behavior is very close to log{ital t} which is related to the anisotropy of the O-Cu-O chains. The growth dynamics in the case of a small amount of cation substitutional impurities supports the idea that the logarithmic behavior is an intrinsic property of the model chosen and depends very little on impurities. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 286704
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 6 Vol. 54; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANISOTROPY
BARIUM OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
CUPRATES
DIFFUSION
HIGH-TC SUPERCONDUCTORS
IMPURITIES
MONTE CARLO METHOD
ORDER-DISORDER TRANSFORMATIONS
ORTHORHOMBIC LATTICES
OXYGEN
STOICHIOMETRY
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0065-0273 K
TETRAGONAL LATTICES
TRANSITION TEMPERATURE
YTTRIUM OXIDES