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Cluster approach to order-disorder transformations in alloys
D De Fontaine - Solid state physics, 1994 - Elsevier
Publisher Summary This chapter presents the formalism and applications of cluster
expansions to the problem of ab initio calculations of thermodynamic properties of crystalline …
expansions to the problem of ab initio calculations of thermodynamic properties of crystalline …
Oxygen diffusion in the superconductors of the YBaCuO family: isotope exchange measurements and models
K Conder - Materials Science and Engineering: R: Reports, 2001 - Elsevier
The thermodynamic and kinetic aspects of the oxygen exchange in the solid oxide-oxygen
phase system are discussed for the YBaCuO compounds. For both YBa2Cu3O7− x (Y123) …
phase system are discussed for the YBaCuO compounds. For both YBa2Cu3O7− x (Y123) …
Charge distribution and electric-field gradients in
The electric-field gradients (EFG's) of YBa 2 Cu 3 O 7, YBa 2 Cu 3 O 6.5, and YBa 2 Cu 3 O
6 are calculated on a first-principles basis using the full-potential linear augmented-plane …
6 are calculated on a first-principles basis using the full-potential linear augmented-plane …
Relation between superconducting transition temperature and oxygen ordering in YBa2Cu306+x
H Friis Poulsen, N Hessel Andersen… - Nature, 1991 - nature.com
THE superconducting transition temperature, T c, of the ceramic high-temperature
superconductor YBa2Cu3O6+ xis known to depend not only on the oxygen stoichiometry x …
superconductor YBa2Cu3O6+ xis known to depend not only on the oxygen stoichiometry x …
Magnetic properties of nonmetallic lanthanide compounds
Publisher Summary This chapter discusses the magnetic properties of lanthanide
compounds.. Specific magnetic and magnetoelastic properties of the crystals are determined …
compounds.. Specific magnetic and magnetoelastic properties of the crystals are determined …
Oxygen-ordering superstructures in underdoped studied by hard x-ray diffraction
M Zimmermann, JR Schneider, T Frello, NH Andersen… - Physical Review B, 2003 - APS
High-energy x-ray diffraction is used to investigate the bulk oxygen-ordering properties of
YBa 2 Cu 3 O 6+ x. Four different superstructures of Cu-O chains aligned along the b axis …
YBa 2 Cu 3 O 6+ x. Four different superstructures of Cu-O chains aligned along the b axis …
Computation of the OI-OII-OIII phase diagram and local oxygen configurations for YBa2Cu3Oz with z between 6.5 and 7
We have computed the low-temperature portion of a phase diagram for the YBa 2 Cu 3 O z
compound between the stoichiometries z= 6.5 and z= 7. Apart from the OI and OII phases …
compound between the stoichiometries z= 6.5 and z= 7. Apart from the OI and OII phases …
Effective cluster interactions from cluster-variation formalism. II
Using the recently developed direct-configurational-averaging method, we have considered
the expansion of formation energies of the random and ordered states in terms of effective …
the expansion of formation energies of the random and ordered states in terms of effective …
The structural phase diagram and oxygen equilibrium partial pressure of YBa2Cu3O6+ x studied by neutron powder diffraction and gas volumetry
NH Andersen, B Lebech, HF Poulsen - Physica C: Superconductivity, 1990 - Elsevier
An experimental technique based on neutron powder diffraction and gas volumetry is
presented and used to study the structural phase diagram of YBa 2 Cu 3 O 6+ x under …
presented and used to study the structural phase diagram of YBa 2 Cu 3 O 6+ x under …
Structural transformations in nonstoichiometric
S Semenovskaya, AG Khachaturyan - Physical Review B, 1992 - APS
Structural-transformation kinetics in YBa 2 Cu 3 O 6+ δ caused by oxygen ordering is
considered. The effect of long-range interaction between oxygen atoms, Coulomb repulsion …
considered. The effect of long-range interaction between oxygen atoms, Coulomb repulsion …