High-pressure x-ray diffraction studies on the structure of liquid silicate using a Paris–Edinburgh type large volume press

2011 ◽  
Vol 82 (1) ◽  
pp. 015103 ◽  
Author(s):  
Akihiro Yamada ◽  
Yanbin Wang ◽  
Toru Inoue ◽  
Wenge Yang ◽  
Changyong Park ◽  
...  
Keyword(s):  
High Pressure ◽  
Large Volume ◽  
X Ray Diffraction ◽  
X Ray ◽  
Liquid Silicate ◽  
Structure Of Liquid

scholarly journals Crystal structure of the high-P polymorph of Ca2B6O6(OH)10·2(H2O) (meyerhofferite)

2021 ◽  
Vol 77 (6) ◽  
Author(s):  
Davide Comboni ◽  
Tomasz Poreba ◽  
Francesco Pagliaro ◽  
Tommaso Battiston ◽  
Paolo Lotti ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
High Pressure ◽  
Large Volume ◽  
Atomic Scale ◽  
Deformation Mechanisms ◽  
X Ray Diffraction ◽  
X Ray ◽  
First Order ◽  
Structural Differences

The crystal structure of the high-pressure polymorph of meyerhofferite, ideally Ca2B6O6(OH)10·2(H2O), has been determined by means of single-crystal synchrotron X-ray diffraction data. Meyerhofferite undergoes a first-order isosymmetric phase transition to meyerhofferite-II, bracketed between 3.15 and 3.75 GPa, with a large volume discontinuity. The phase transition is marked by an increase in the coordination number of the boron B1 site, from III to IV, leading to a more interconnected and less compressible structure. The main structural differences between the two polymorphs and the P-induced deformation mechanisms at the atomic scale are discussed.

scholarly journals P-V-Trelations of wadsleyite determined by in situ X-ray diffraction in a large-volume high-pressure apparatus

2009 ◽  
Vol 36 (11) ◽  
Author(s):  
Tomoo Katsura ◽  
Anton Shatskiy ◽  
M. A. Geeth M. Manthilake ◽  
Shuangmeng Zhai ◽  
Daisuke Yamazaki ◽  
...  
Keyword(s):  
High Pressure ◽  
Large Volume ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Pressure Apparatus

scholarly journals Correction to “P-V-T relations of the MgSiO3perovskite determined by in situ X-ray diffraction using a large-volume high-pressure apparatus”

2009 ◽  
Vol 36 (16) ◽  
Author(s):  
Tomoo Katsura ◽  
Sho Yokoshi ◽  
Kazuaki Kawabe ◽  
Anton Shatskiy ◽  
M. A. Geeth M. Manthilake ◽  
...  
Keyword(s):  
High Pressure ◽  
Large Volume ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Pressure Apparatus

scholarly journals Observation of Sb2S3-type post-post-perovskite in NaFeF3. Implications for ABX3 and A2X3 systems at ultrahigh pressure

2016 ◽  
Vol 80 (4) ◽  
pp. 659-674 ◽  
Author(s):  
W. A. Crichton ◽  
F. L. Bernal ◽  
J. Guignard ◽  
M. Hanfland ◽  
S. Margadonna
Keyword(s):  
High Pressure ◽  
Volume Change ◽  
Large Volume ◽  
Considerable Change ◽  
Ultrahigh Pressure ◽  
X Ray Diffraction ◽  
Concomitant Increase ◽  
X Ray ◽  
Average Bond ◽  
Crystallographic Orientations

AbstractWe describe the structures and transformations that lead to the crystallization of a post-post-perovskite of Sb2S3 type in a GdFeO3-type fluoroperovskite system at high-pressure conditions, through use of large-volume powder and single-crystal x-ray diffraction techniques. The results of this analysis gives unique access to the relative crystallographic orientations of all the polymorphs encountered (GdFeO3 type, CaIrO3 type and Sb2S3 type). We use this information to extend this description to include other calculated and observed forms that are competitive in ABX3 and A2X3 stoichiometries (e.g. α-Gd2S3 and Be3N2 types) and provide substantial information on inter-relationships between these structures. Such information is critical to the interpretation of transition mechanisms, predicting transition sequences and to the expression of directional properties in those transformed structures. The transformation from CaIrO3 type to Sb2S3 type is group-subgroup, from Cmcm with fc2a, to Pnma c5, with no observable volume change, but considerable change to the morphology of the lattice. There is a concomitant increase in coordination and average bond length compared to the post-perovskite form of NaFeF3.

scholarly journals P-V-T relations of MgSiO3perovskite determined by in situ X-ray diffraction using a large-volume high-pressure apparatus

2009 ◽  
Vol 36 (1) ◽  
Author(s):  
Tomoo Katsura ◽  
Sho Yokoshi ◽  
Kazuaki Kawabe ◽  
Anton Shatskiy ◽  
M. A. Geeth M. Manthilake ◽  
...  
Keyword(s):  
High Pressure ◽  
Large Volume ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Pressure Apparatus

P-V-T relations of  -Ca3(PO4)2 tuite determined by in situ X-ray diffraction in a large-volume high-pressure apparatus

2013 ◽  
Vol 98 (10) ◽  
pp. 1811-1816 ◽  
Author(s):  
S. Zhai ◽  
D. Yamazaki ◽  
W. Xue ◽  
L. Ye ◽  
C. Xu ◽  
...  
Keyword(s):  
High Pressure ◽  
Large Volume ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Pressure Apparatus

Effect of high pressure-temperature on silicon layered structures as determined by X-ray diffraction and electron microscopy

2004 ◽  
Vol 27 (1-3) ◽  
pp. 415-418
Author(s):  
J. Bak-Misiuk ◽  
A. Misiuk ◽  
J. Ratajczak ◽  
A. Shalimov ◽  
I. Antonova ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
High Pressure ◽  
Layered Structures ◽  
X Ray Diffraction ◽  
X Ray

Revisiting the High-Pressure Properties of the Metal-Organic Frameworks ZIF-8 and ZIF-67

2020 ◽  
Author(s):  
Pia Vervoorts ◽  
Stefan Burger ◽  
Karina Hemmer ◽  
Gregor Kieslich
Keyword(s):  
High Pressure ◽  
State Of The Art ◽  
Energy Landscape ◽  
Structural Flexibility ◽  
Zeolitic Imidazolate Frameworks ◽  
Stimuli Responsive ◽  
X Ray Diffraction ◽  
X Ray ◽  
Open Questions ◽  
Metal Organic

The zeolitic imidazolate frameworks ZIF-8 and ZIF-67 harbour a series of fascinating stimuli responsive properties. Looking at their responsitivity to hydrostatic pressure as stimulus, open questions exist regarding the isotropic compression with non-penetrating pressure transmitting media. By applying a state-of-the-art high-pressure powder X-ray diffraction setup, we revisit the high-pressure behaviour of ZIF-8 and ZIF-67 up to <i>p</i> = 0.4 GPa in small pressure increments. We observe a drastic, reversible change of high-pressure powder X-ray diffraction data at <i>p</i> = 0.3 GPa, discovering large volume structural flexibility in ZIF-8 and ZIF-67. Our results imply a shallow underlying energy landscape in ZIF-8 and ZIF-67, an observation that might point at rich polymorphism of ZIF-8 and ZIF-67, similar to ZIF-4(Zn).<br>

Revisiting the High-Pressure Properties of the Metal-Organic Frameworks ZIF-8 and ZIF-67

2020 ◽  
Author(s):  
Pia Vervoorts ◽  
Stefan Burger ◽  
Karina Hemmer ◽  
Gregor Kieslich
Keyword(s):  
High Pressure ◽  
State Of The Art ◽  
Energy Landscape ◽  
Structural Flexibility ◽  
Zeolitic Imidazolate Frameworks ◽  
Stimuli Responsive ◽  
X Ray Diffraction ◽  
X Ray ◽  
Open Questions ◽  
Metal Organic

The zeolitic imidazolate frameworks ZIF-8 and ZIF-67 harbour a series of fascinating stimuli responsive properties. Looking at their responsitivity to hydrostatic pressure as stimulus, open questions exist regarding the isotropic compression with non-penetrating pressure transmitting media. By applying a state-of-the-art high-pressure powder X-ray diffraction setup, we revisit the high-pressure behaviour of ZIF-8 and ZIF-67 up to <i>p</i> = 0.4 GPa in small pressure increments. We observe a drastic, reversible change of high-pressure powder X-ray diffraction data at <i>p</i> = 0.3 GPa, discovering large volume structural flexibility in ZIF-8 and ZIF-67. Our results imply a shallow underlying energy landscape in ZIF-8 and ZIF-67, an observation that might point at rich polymorphism of ZIF-8 and ZIF-67, similar to ZIF-4(Zn).<br>

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