Compression of glycolide-h4 to 6 GPa

This study details the structural characterization of glycolide-h4 as a function of pressure to 6 GPa using neutron powder diffraction on the PEARL instrument at ISIS Neutron and Muon source. Glycolide-h4, rather than its deuterated isotopologue, was used in this study due to the difficulty of deuteration. The low background afforded by zirconia-toughened alumina anvils nevertheless enabled the collection of data suitable for structural analysis to be obtained to a pressure of 5 GPa. Glycolide-h4 undergoes a reconstructive phase transition at 0.15 GPa to a previously identified form (II), which is stable to 6 GPa.

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Structural Characterization of D2 in Cu3(1,3,5-Benzenetricarboxylate)2 Using Neutron Powder Diffraction

Materials Science Forum - PRICM 6 ◽

10.4028/0-87849-462-6.1601 ◽

2007 ◽

pp. 1601-1604

Author(s):

Vanessa K. Peterson ◽

Yun Liu ◽

Craig M. Brown ◽

Cameron J. Kepert

Keyword(s):

Powder Diffraction ◽

Structural Characterization ◽

Neutron Powder Diffraction

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Structural characterization of La2−xMxCuO4 (M = Sr,Ba) samples by synchrotron x-ray and neutron powder diffraction techniques

Journal of Materials Research ◽

10.1557/jmr.1988.1327 ◽

1988 ◽

Vol 3 (6) ◽

pp. 1327-1335 ◽

Cited By ~ 9

Author(s):

D. E. Cox ◽

S. C. Moss ◽

R. L. Meng ◽

P. H. Hor ◽

C. W. Chu

Keyword(s):

High Resolution ◽

Rietveld Refinement ◽

Powder Diffraction ◽

Structural Characterization ◽

Neutron Powder Diffraction ◽

Superconducting Properties ◽

X Ray Diffraction ◽

Neutron Data ◽

X Ray

High-resolution synchrotron x-ray powder diffraction studies on samples of La2−xMxCuO4 (M = Sr,Ba) prepared by standard ceramic techniques show that macroscopic compositional inhomogeneities may exist that are unlikely to be revealed by conventional x-ray diffraction methods. Rietveld refinement of neutron data collected at 200, 50, and 11 K from one such sample, nominally La1.8Sr0.2CuO4, gave satisfactory fits to a tetragonal structure of K2NiF4 type at all three temperatures. However, careful individual peak fits revealed that part of the sample transforms to orthorhombic between 200 and 50 K. It is suggested that this multiphase character has an important influence on the superconducting properties.

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Structural characterization of Bi2Te3 and Sb2Te3 as a function of temperature using neutron powder diffraction and extended X-ray absorption fine structure techniques

Journal of Applied Physics ◽

10.1063/1.4892441 ◽

2014 ◽

Vol 116 (8) ◽

pp. 083513 ◽

Cited By ~ 16

Author(s):

A. N. Mansour ◽

W. Wong-Ng ◽

Q. Huang ◽

W. Tang ◽

A. Thompson ◽

...

Keyword(s):

Fine Structure ◽

Powder Diffraction ◽

Structural Characterization ◽

Neutron Powder Diffraction ◽

X Ray ◽

Absorption Fine ◽

X Ray Absorption

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Structural Characterization of D2 in Cu3(1,3,5-Benzenetricarboxylate)2 Using Neutron Powder Diffraction

Materials Science Forum ◽

10.4028/www.scientific.net/msf.561-565.1601 ◽

2007 ◽

Vol 561-565 ◽

pp. 1601-1604 ◽

Cited By ~ 2

Author(s):

Vanessa K. Peterson ◽

Yun Liu ◽

Craig M. Brown ◽

Cameron J. Kepert

Keyword(s):

Porous Material ◽

Powder Diffraction ◽

Structural Characterization ◽

Host Lattice ◽

Neutron Powder Diffraction ◽

Primary Site ◽

Pore System ◽

Metal Framework ◽

Small Pore

Sorption of ten different quantities of D2 within the porous coordination metal framework Cu3(1,3,5-benzenetricarboxylate)2 were studied using neutron powder diffraction. D2 sorption in the porous material reached saturation (at 25 K) at an amount equivalent to ~6.5 wt. % H2. Rietveld analyses revealed that at saturation there are two saturated small pore and three saturated large pore sites, in addition to the primary site at the coordinatively unsaturated Cu. We reveal that the linked bimodal pore system provides up to nine distinct sites for D2, at moderate D2 concentrations up to saturation. Intermediate sites are attributed to local D2-D2 interaction within the confined pore spaces. Within the small and large pores one, and two, intermediate sites are identified, respectively. The population of D2 at each site was found to affect the host lattice.

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