A heatable large volume pressure cell for neutron powder diffraction: The Kiel–Berlin Cell II

1999 ◽  
Vol 70 (2) ◽  
pp. 1501-1504 ◽  
Author(s):  
K. Knorr ◽  
B. Annighöfer ◽  
W. Depmeier
Keyword(s):  
Powder Diffraction ◽  
Large Volume ◽  
Neutron Powder Diffraction ◽  
Pressure Cell

ChemInform Abstract: In situ Neutron Powder Diffraction on Intermediate Hydrides of MgPd3in a Novel Sapphire Gas Pressure Cell.

ChemInform ◽  
2010 ◽  
Vol 41 (9) ◽  
Author(s):  
Holger Kohlmann ◽  
Nadine Kurtzemann ◽  
Richard Weihrich ◽  
Thomas Hansen
Keyword(s):  
Powder Diffraction ◽  
Neutron Powder Diffraction ◽  
Gas Pressure ◽  
Pressure Cell

scholarly journals Design and use of a sapphire single-crystal gas-pressure cell for in situ neutron powder diffraction

2021 ◽  
Vol 54 (3) ◽  
Author(s):  
Raphael Finger ◽  
Nadine Kurtzemann ◽  
Thomas C. Hansen ◽  
Holger Kohlmann
Keyword(s):  
Single Crystal ◽  
Powder Diffraction ◽  
Neutron Powder Diffraction ◽  
Gas Pressure ◽  
Sample Holder ◽  
Pressure Cell ◽  
Hydrogen Deuterium ◽  
Sapphire Single Crystal ◽  
Deuterium Gas

A sapphire single-crystal gas-pressure cell without external support allowing unobstructed optical access by neutrons has been developed and optimized for elastic in situ neutron powder diffraction using hydrogen (deuterium) gas at the high-intensity two-axis diffractometer D20 at the Institut Laue-Langevin (Grenoble, France). Given a proper orientation of the single-crystal sample holder with respect to the detector, parasitic reflections from the sample holder can be avoided and the background can be kept low. Hydrogen (deuterium) gas pressures of up to 16.0 MPa at 298 K and 8.0 MPa at 655 K were tested successfully for a wall thickness of 3 mm. Heating was achieved by a two-sided laser heating system. The typical time resolution of in situ investigations of the reaction pathway of hydrogen (deuterium) uptake or release is on the order of 1 min. Detailed descriptions of all parts of the sapphire single-crystal gas-pressure cell are given, including materials information, technical drawings and instructions for use.

Neutron powder diffraction study of phase separation in La2CuO4+δ

1994 ◽  
Vol 235-240 ◽  
pp. 841-842 ◽  
Author(s):  
F. Izumi ◽  
Y.-I. Kim ◽  
E. Takayama-Muromachi ◽  
T. Kamiyama
Keyword(s):  
Phase Separation ◽  
Diffraction Study ◽  
Powder Diffraction ◽  
Neutron Powder Diffraction

Neutron powder diffraction study of orthorhombic Ba 2 YCu 3 O 6.5

1987 ◽  
Vol 22 (12) ◽  
pp. 1733-1740 ◽  
Author(s):  
S. Miraglia ◽  
F. Beech ◽  
A. Santoro ◽  
D. Tran Qui ◽  
S.A. Sunshine ◽  
...  
Keyword(s):  
Diffraction Study ◽  
Powder Diffraction ◽  
Neutron Powder Diffraction

Use of Neutron Diffraction for Describing Texture of Isostatically-Pressed Molybdite Powders

2005 ◽  
Vol 105 ◽  
pp. 83-88 ◽  
Author(s):  
H. Sitepu ◽  
Heinz Günter Brokmeier
Keyword(s):  
Crystal Structure ◽  
Neutron Diffraction ◽  
Powder Diffraction ◽  
Quantitative Description ◽  
Neutron Powder Diffraction ◽  
Powder Diffraction Data ◽  
Neutron Powder Diffraction Data ◽  
Pole Figures ◽  
Diffraction Patterns ◽  
Excellent Tool

The modelling and/or describing of texture (i.e. preferred crystallographic orientation (PO)) is of critical importance in powder diffraction analysis - for structural study and phase composition. In the present study, the GSAS Rietveld refinement with generalized spherical harmonic (GSH) was used for describing isostatically-pressed molybdite powders neutron powder diffraction data collected in the ILL D1A instrument. The results showed that for texture in a single ND data of molybdite the reasonable crystal structure parameters may be obtained when applying corrections to intensities using the GSH description. Furthermore, the WIMV method was used to extract the texture description directly from a simultaneous refinement with 1368 whole neutron diffraction patterns taken from the sample held in a variety of orientations in the ILL D1B texture goniometer. The results provided a quantitative description of the texture refined simultaneously with the crystal structure. Finally, the (002) molybdite pole-figures were measured using the GKSS TEX2 texture goniometer. The results showed that neutron diffraction is an excellent tool to investigate the texture in molybdite.

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