Determination of the kinetics of crystallisation of gibbsite using time resolved in situ energy dispersive powder X-ray diffraction

The YBa2Cu3O7−x formation kinetics from a spray-roasted precursor powder containing Y2O3, BaCO3, and CuO was followed via in situ, time-resolved x-ray diffraction as a function of gas atmosphere and temperature. In inert atmospheres, BaCO3 and CuO form BaCu2O2 which subsequently reacts with Y2O3 to form YBa2Cu3O6. However, YBa2Cu3O6 decomposes at temperatures exceeding 725 °C with Y2BaCuO5 being one of the decomposition products. In oxidizing atmospheres, YBa2Cu3O7−x formation involves the BaCuO2. At high temperatures (800–840 °C), oxygen increases the yield of YBa2Cu3O6. A nuclei growth model assuming two-dimensional, diffusion-controlled growth with second-order nucleation rate fits the experimental data.

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In Situ Time-Resolved X-Ray Diffraction Investigation of the ω→ψ Transition in Al-Cu-Fe Quasicrystal-Forming Alloys

Materials Science Forum ◽

10.4028/www.scientific.net/msf.558-559.943 ◽

2007 ◽

Vol 558-559 ◽

pp. 943-947 ◽

Cited By ~ 1

Author(s):

E. Otterstein ◽

R. Nicula ◽

J. Bednarčík ◽

M. Stir ◽

E. Burkel

Keyword(s):

Large Scale ◽

Applied Pressure ◽

High Temperature Phase ◽

Temperature Phase ◽

X Ray Diffraction ◽

Time Resolved ◽

X Ray ◽

In Situ Xrd ◽

Kinetics Of

Quasicrystals are aperiodic long-range ordered solids with a high potential for many modern applications. Interest is nowadays paid to the development of economically viable large-scale synthesis procedures of quasicrystalline materials involving solid-state transformations. The kinetics of the high-temperature phase transition from the complex ω-phase to the icosahedral quasicrystalline (iQC) ψ-phase in AlCuFe nanopowders was here examined by in-situ time-resolved X-ray diffraction experiments using synchrotron radiation. In-situ XRD experiments will allow insight on the influence of uniaxial applied pressure on the kinetics of phase transitions leading to the formation of single-phase QC nanopowders and further contribute to the optimization of sintering procedures for nano-quasicrystalline AlCuFe alloy powders.

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A furnace for the in situ study of the formation of inorganic solids at high temperature using time-resolved energy-dispersive x-ray diffraction

Review of Scientific Instruments ◽

10.1063/1.1315355 ◽

2000 ◽

Vol 71 (11) ◽

pp. 4177 ◽

Cited By ~ 9

Author(s):

Margret J. Geselbracht ◽

Richard I. Walton ◽

E. Sarah Cowell ◽

Franck Millange ◽

Dermot O’Hare

Keyword(s):

High Temperature ◽

Energy Dispersive ◽

X Ray Diffraction ◽

Time Resolved ◽

X Ray ◽

Inorganic Solids ◽

In Situ Study

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Kinetics of the Solid-State Phase Transformation of Form β to γ of Sulfanilamide Using Time-Resolved Energy-Dispersive X-ray Diffraction

Chemistry of Materials ◽

10.1021/cm950349z ◽

1996 ◽

Vol 8 (5) ◽

pp. 1042-1051 ◽

Cited By ~ 24

Author(s):

Andrew K. Sheridan ◽

Jamshed Anwar

Keyword(s):

Phase Transformation ◽

Solid State ◽

Energy Dispersive ◽

X Ray Diffraction ◽

Time Resolved ◽

X Ray ◽

Solid State Phase Transformation ◽

Kinetics Of

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Quantitative Determination of Preferred Orientation by Energy-Dispersive X-Ray Diffraction

Texture of Crystalline Solids ◽

10.1155/tsm.2.95 ◽

1976 ◽

Vol 2 (2) ◽

pp. 95-111 ◽

Cited By ~ 8

Author(s):

L. Gerward ◽

S. Lehn ◽

G. Christiansen

Keyword(s):

Quantitative Determination ◽

Rolling Texture ◽

Tension Test ◽

Preferred Orientation ◽

Energy Dispersive ◽

X Ray Diffraction ◽

X Ray ◽

Fibre Texture

The use of energy-dispersive X-ray diffraction for quantitative determination of preferred orientations in polycrystalline specimens is analysed. The method is applied to determinations of rolling texture and fibre texture. The adaptability of the method to in situ studies is demonstrated by observations of texture changes simultaneous with the deformation of a specimen in a tension test.

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In situ investigation of the selenization kinetics of Cu–Ga precursors using time-resolved high-temperature X-ray diffraction

Thin Solid Films ◽

10.1016/j.tsf.2006.12.173 ◽

2007 ◽

Vol 515 (15) ◽

pp. 5837-5842 ◽

Cited By ~ 20

Author(s):

W.K. Kim ◽

E.A. Payzant ◽

T.J. Anderson ◽

O.D. Crisalle

Keyword(s):

High Temperature ◽

X Ray Diffraction ◽

Time Resolved ◽

X Ray ◽

In Situ Investigation ◽

Kinetics Of

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Structural Evolution of Amorphous Ge2Sb2Te5 Thin Films in the Transition to the Crystalline Phase

MRS Proceedings ◽

10.1557/proc-1072-g02-05 ◽

2008 ◽

Vol 1072 ◽

Author(s):

Riccardo De Bastiani ◽

Alberto Maria Piro ◽

Maria Grazia Grimaldi ◽

Emanuele Rimini ◽

Giuseppe Baratta ◽

...

Keyword(s):

Thin Films ◽

Crystalline Phase ◽

Short Range ◽

Structural Modification ◽

Structural Evolution ◽

X Ray Diffraction ◽

Time Resolved ◽

X Ray ◽

Kinetics Of

ABSTRACTThe crystallization kinetics of as-deposited amorphous Ge2Sb2Te5 thin films has been measured by in situ time resolved reflectivity. X-ray diffraction and Raman scattering analyses of partially transformed samples allowed to correlate the evolution of the transition to the structural modification in the long and short range configuration. The experimental results evidenced that during the early stages of crystallization there is a reduction of Ge-Te tetrahedral bonds, characteristics of the Ge coordination in amorphous Ge2Sb2Te5 films.

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