scholarly journals Single-crystal elasticity of natural Fe-bearing orthoenstatite across a high-pressure phase transition

2016 ◽  
Vol 43 (16) ◽  
pp. 8473-8481 ◽  
Author(s):  
Jin S. Zhang ◽  
Jay D. Bass
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Single Crystal ◽  
High Pressure Phase ◽  
High Pressure Phase Transition ◽  
Pressure Phase

A new high-pressure phase transition in clinoferrosilite: In situ single-crystal X-ray diffraction study

2017 ◽  
Vol 102 (3) ◽  
pp. 666-673 ◽  
Author(s):  
Anna Pakhomova ◽  
Leyla Ismailova ◽  
Elena Bykova ◽  
Maxim Bykov ◽  
Tiziana Boffa Ballaran ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Single Crystal ◽  
Diffraction Study ◽  
High Pressure Phase ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Pressure Phase Transition ◽  
Pressure Phase

scholarly journals Comparison of the effects of pressure on three layered hydrates: a partially successful attempt to predict a high-pressure phase transition

2009 ◽  
Vol 65 (6) ◽  
pp. 731-748 ◽  
Author(s):  
Russell D. L. Johnstone ◽  
Alistair R. Lennie ◽  
Simon Parsons ◽  
Elna Pidcock ◽  
John E. Warren
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Single Crystal ◽  
Molecular Conformation ◽  
Ambient Pressure ◽  
High Pressure Phase ◽  
Cysteic Acid ◽  
Water Molecules ◽  
High Pressure Phase Transition ◽  
Pressure Phase

We report the effect of pressure on the crystal structures of betaine monohydrate (BTM), L-cysteic acid monohydrate (CAM) and S-4-sulfo-L-phenylalanine monohydrate (SPM). All three structures are composed of layers of zwitterionic molecules separated by layers of water molecules. In BTM the water molecules make donor interactions with the same layer of betaine molecules, and the structure remains in a compressed form of its ambient-pressure phase up to 7.8 GPa. CAM contains bi-layers of L-cysteic acid molecules separated by water molecules which form donor interactions to the bi-layers above and below. This phase is stable up to 6.8 GPa. SPM also contains layers of zwitterionic molecules with the waters acting as hydrogen-bond donors to the layers above and below. SPM undergoes a single-crystal to single-crystal phase transition above 1 GPa in which half the water molecules reorient so as to form one donor interaction with another water molecule within the same layer. In addition, half of the S-4-sulfo-L-phenylalanine molecules change their conformation. The high-pressure phase is stable up to 6.9 GPa, although modest rearrangements in hydrogen bonding and molecular conformation occur at 6.4 GPa. The three hydrates had been selected on the basis of their topological similarity (CAM and SPM) or dissimilarity (BTM) with serine hydrate, which undergoes a phase transition at 5 GPa in which the water molecules change orientation. The phase transition in SPM shows some common features with that in serine hydrate. The principal directions of compression in all three structures were found to correlate with directions of hydrogen bonds and distributions of interstitial voids.

scholarly journals High-Pressure Phase Transition of Micro- and Nanoscale HoVO4 and High-Pressure Phase Diagram of REVO4 with RE Ionic Radius

ACS Omega ◽  
2018 ◽  
Vol 3 (12) ◽  
pp. 18227-18233 ◽  
Author(s):  
Junbo Gong ◽  
Xiaodong Fan ◽  
Rucheng Dai ◽  
Zhongping Wang ◽  
Zejun Ding ◽  
...  
Keyword(s):  
Phase Transition ◽  
Phase Diagram ◽  
High Pressure ◽  
Ionic Radius ◽  
High Pressure Phase ◽  
High Pressure Phase Transition ◽  
Pressure Phase

High pressure phase transition in rape-seed oil

2007 ◽  
Vol 135 (1-3) ◽  
pp. 120-122 ◽  
Author(s):  
A.J. Rostocki ◽  
R. Wiśniewski ◽  
T. Wilczyńska
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Seed Oil ◽  
High Pressure Phase ◽  
Rape Seed ◽  
High Pressure Phase Transition ◽  
Pressure Phase

Rare twin linked to high-pressure phase transition in iron

2009 ◽  
Vol 60 (9) ◽  
pp. 772-775 ◽  
Author(s):  
L.M. Dougherty ◽  
G.T. Gray III ◽  
E.K. Cerreta ◽  
R.J. McCabe ◽  
R.D. Field ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
High Pressure Phase ◽  
High Pressure Phase Transition ◽  
Pressure Phase
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