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Salmon PS, Zeidler A. Networks under pressure: the development of in situ high-pressure neutron diffraction for glassy and liquid materials. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2015; 27:133201. [PMID: 25743915 DOI: 10.1088/0953-8984/27/13/133201] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The pressure-driven collapse in the structure of network-forming materials will be considered in the gigapascal (GPa) regime, where the development of in situ high-pressure neutron diffraction has enabled this technique to obtain new structural information. The improvements to the neutron diffraction methodology are discussed, and the complementary nature of the results is illustrated by considering the pressure-driven structural transformations for several key network-forming materials that have also been investigated by using other experimental techniques such as x-ray diffraction, inelastic x-ray scattering, x-ray absorption spectroscopy and Raman spectroscopy. A starting point is provided by the pressure-driven network collapse of the prototypical network-forming oxide glasses B2O3, SiO2 and GeO2. Here, the combined results help to show that the coordination number of network-forming structural motifs in a wide range of glassy and liquid oxide materials can be rationalised in terms of the oxygen-packing fraction over an extensive pressure and temperature range. The pressure-driven network collapse of the prototypical chalcogenide glass GeSe2 is also considered where, as for the case of glassy GeO2, site-specific structural information is now available from the method of in situ high-pressure neutron diffraction with isotope substitution. The application of in situ high-pressure neutron diffraction to other structurally disordered network-forming materials is also summarised. In all of this work a key theme concerns the rich diversity in the mechanisms of network collapse, which drive the changes in physico-chemical properties of these materials. A more complete picture of the mechanisms is provided by molecular dynamics simulations using theoretical schemes that give a good account of the experimental results.
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JEDLOVSZKY BPAL, VALLAURI RENZO. Computer simulation study of liquid HF with a new effective pair potential model. Mol Phys 2010. [DOI: 10.1080/002689797170536] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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CABACO BMI, DANTEN Y, GUILLOT MBESNARDYGUISSANIAB. Structural studies of liquid cyclopropane: from room temperature up to supercritical conditions. Mol Phys 2010. [DOI: 10.1080/002689797172174] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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CABACO MI, DANTEN Y, BESNARD M. Neutron diffraction and molecular dynamics investigations of the temperature dependence of the local ordering in liquid cyclopropane. Mol Phys 2010. [DOI: 10.1080/002689797172165] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Gutwerk D, Bausenwein T, Bertagnolli H. The determination of Lennard-Jones potential parameters of fluid hydrogenchloride by RISM calculations over a broad range of densities. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19940980705] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Abstract
High pressure neutron diffraction experiments on a mixture of CH4 and CD4 as well as on pure deuterated methane CD4 were performed at three supercritical states. The structure factor was determined at three different densities at a temperature of T = 370K. The intra- and intermolecular structure was determined from the structure factor. The results from pure CD4 are in very good agreement with former neutron diffraction experiments. The experiments on the isotopic mixture allowed the direct determination of the pair correlation function of the molecular centres. The results of the diffraction experiments are presented in this paper.
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Kreitmeir M, Heusel G, Bertagnolli H, Tödheide K, Mundy CJ, Cuello GJ. Structure of dense hydrogen fluoride gas from neutron diffraction and molecular dynamics simulations. J Chem Phys 2005; 122:154511. [PMID: 15945649 DOI: 10.1063/1.1877232] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The gas phase of hydrogen fluoride has been investigated by neutron diffraction experiments at three different particle densities. All investigated states are within the liquid-gas coexistence region of hydrogen fluoride. From the obtained diffraction data we deduced information about the local structure of the gas phase, which consists of small agglomerates. This has been expected as liquid hydrogen fluoride forms the strongest hydrogen bonds known. Molecular dynamics simulations with a modified potential have been carried out for all experimentally investigated states. The results confirmed that the size of the formed agglomerates in the gas phase is growing with increasing density of the gas phase.
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Affiliation(s)
- Markus Kreitmeir
- Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany.
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Pfleiderer T, Bertagnolli H, Tödheide K, Fischer HE. The structure of a fluid mixture of deuterated ethane and deuterated methane by high-pressure neutron diffraction experiments. J Chem Phys 2001. [DOI: 10.1063/1.1396847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Pfleiderer T, Bertagnolli H, Tödheide K, Soper AK. High pressure neutron diffraction on fluid propane and a mixture of propane and methane. J Chem Phys 2001. [DOI: 10.1063/1.1378067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Pfleiderer T, Waldner I, Bertagnolli H, Tödheide K, Fischer HE. The structure of liquid and supercritical deuterium fluoride from neutron scattering using high-pressure techniques. J Chem Phys 2000. [DOI: 10.1063/1.1287427] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tassaing T, Cabaço MI, Danten Y, Besnard M. The structure of liquid and supercritical benzene as studied by neutron diffraction and molecular dynamics. J Chem Phys 2000. [DOI: 10.1063/1.1287787] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Pfleiderer T, Waldner I, Bertagnolli H, Tödheide K, Kirchner B, Huber H, Fischer HE. The structure of fluid argon from high-pressure neutron diffraction andab initiomolecular dynamics simulations. J Chem Phys 1999. [DOI: 10.1063/1.479539] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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BERTAGNOLLI H, WALDNER I, TODHEIDE K, FISCHER H. Neutron diffraction experiments on ethane under high pressure. Mol Phys 1998. [DOI: 10.1080/002689798168204] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Waldner I, Bassen A, Bertagnolli H, Tödheide K, Strauss G, Soper AK. High-pressure neutron diffraction on fluid carbon tetrafluoride and interpretation by reverse Monte Carlo simulations. J Chem Phys 1997. [DOI: 10.1063/1.474183] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Cabaço MI, Danten Y, Besnard M, Guissani Y, Guillot B. Neutron Diffraction and Molecular Dynamics Study of Liquid Benzene and Its Fluorinated Derivatives as a Function of Temperature. J Phys Chem B 1997. [DOI: 10.1021/jp971331+] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Andreani C, Ricci MA, Nardone M, Ricci FP, Soper AK. Orientational correlations and hydrogen bonding in liquid hydrogen chloride. J Chem Phys 1997. [DOI: 10.1063/1.474368] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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W. Neilson G, K. Adya A. Chapter 4. Neutron diffraction studies on liquids. ACTA ACUST UNITED AC 1997. [DOI: 10.1039/pc093101] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bassen A, Zweier H, Bertagnolli H, Tödheide K, Soper AK, Turner J. High-pressure neutron diffraction on fluid methane. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1996; 53:3505-3517. [PMID: 9964660 DOI: 10.1103/physreve.53.3505] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Bausenwein T, Bertagnolli H, David A, Goller K, Zweier H, Tödheide K, Chieux P. Structure and intermolecular interactions in fluid ammonia: An investigation by neutron diffraction at high pressure, statistical‐mechanical calculations and computer simulations. J Chem Phys 1994. [DOI: 10.1063/1.468123] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Strauss G, Zweier H, Bertagnolli H, Bausenwein T, Tödheide K, Chieux P. High‐pressure neutron diffraction on liquid sulphur hexafluoride and interpretation by statistical‐mechanical theories and computer simulations. J Chem Phys 1994. [DOI: 10.1063/1.468122] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bausenwein T, Bertagnolli H, Gutwerk D, Tödheide K, Chieux P. The structure of fluid carbon dioxide by neutron diffraction at high pressure and by RISM calculations. Mol Phys 1992. [DOI: 10.1080/00268979200101211] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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