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title:(Structural AND phase AND diagram AND and AND equilibrium AND oxygen AND partial AND pressure AND of AND YBa<sub>2</sub>Cu<sub>3</sub>O<sub>6</sub><sub>+</sub><sub>x</sub>)

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10 items by relevance
1 Conference paper

Structural phase diagram and equilibrium oxygen partial pressure of YBa2Cu3O6+x

Andersen, N.H.; Lebech, B.; Poulsen, H.F.

15. Congress of the International Union of Crystallography. Collected Abstracts — 1990

Year: 1990

Language: English

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2 Journal article

Structural phase diagram and equilibrium oxygen partial pressure of YBa2Cu3O6+x

Andersen, N.H.; Lebech, B.; Poulsen, H.F.

Journal of the Less-common Metals — 1990, Volume 164-165, Issue 164, pp. 124-131

An experimental technique by which in-situ gas volumetric measurements are carried out on a neutron powder diffractometer, is presented and used for simultaneous studies of oxygen equilibrium partial pressure and the structural phase diagram of YBa2Cu3O6 + x. Experimental data was collected under near equilibrium conditions at 350 points in (x,T)-space with 0.15 < x < 0.92 and 25 °C < T < 725 °C. Precise values of oxygen stoichiometries (absolute values of x within 0.02) were obtained by use of the ideal gas law in connection with iodiometric titration and structural analyses. T...

Year: 1990

Language: English

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3 Journal article

Structural phase diagram and equilibrium oxygen partial pressure of YBa2Cu3O6+x. (PS-08.05.21)

Andersen, N.H.; Lebech, B.; Poulsen, H.F.

Acta Crystallographica Section A: Foundations and Advances — 1990, Volume 46, Issue Suppl.

Year: 1990

Language: English

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4 Conference paper

Study of the structural phase diagram, oxygen bulk in-diffusion, and equilibrium partial pressure of YBa2Cu3O6+x

Andersen, N.H.; Lebech, B.; Poulsen, H.F.

Advances in Superconductivity Iii — 1991, pp. 449-452

Year: 1991

Language: English

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5 Journal article

The structural phase diagram and oxygen equilibrium partial pressure of YBa2CU3O6+x studied by neutron powder diffraction and gas volumetry

Andersen, N.H.; Lebech, B.; Poulsen, H.F.

Physica C: Superconductivity and Its Applications — 1990, Volume 172, Issue 1-2, pp. 31-42

An experimental technique based on neutron powder diffraction and gas volumetry is presented and used to study the structural phase diagram of YBa2Cu3O6+x under equilibrium conditions in an extended part of (x, T)-phase (0.15 < x < 0.92 and 25-degrees-C < T < 725-degrees-C). Our experimental observations lend strong support to a recent two-dimensional anisotropic next-nearest-neighbour Ising model calculation (the ASYNNNI model) of the basal plane oxygen ordering based of first principle interaction parameters. Simultaneous measurements of the oxygen equilibrium partial pressure...

Year: 1990

Language: English

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