scholarly journals Solubility of fluid helium in solid nitrogen at high pressure

1990 ◽  
Vol 64 (8) ◽  
pp. 898-901 ◽  
Author(s):  
Willem Vos ◽  
Jan Schouten
Keyword(s):  
High Pressure ◽  
Solid Nitrogen

High-pressure static and dynamic properties of theR3¯cphase of solid nitrogen

1986 ◽  
Vol 33 (12) ◽  
pp. 8615-8621 ◽  
Author(s):  
R. D. Etters ◽  
V. Chandrasekharan ◽  
E. Uzan ◽  
K. Kobashi
Keyword(s):  
High Pressure ◽  
Dynamic Properties ◽  
Solid Nitrogen

A high-pressure van der Waals compound in solid nitrogen-helium mixtures

Nature ◽  
1992 ◽  
Vol 358 (6381) ◽  
pp. 46-48 ◽  
Author(s):  
W. L. Vos ◽  
L. W. Finger ◽  
R. J. Hemley ◽  
J. Z. Hu ◽  
H. K. Mao ◽  
...  
Keyword(s):  
High Pressure ◽  
Van Der Waals ◽  
Helium Mixtures ◽  
Solid Nitrogen

Molecular dynamics study of solid nitrogen at high pressure

1981 ◽  
Vol 59 (4) ◽  
pp. 530-534 ◽  
Author(s):  
Michael L. Klein ◽  
D. Levesque ◽  
J.-J. Weis
Keyword(s):  
Molecular Dynamics ◽  
High Pressure ◽  
Room Temperature ◽  
Power Spectra ◽  
Dynamical Behaviour ◽  
Dynamical Structure ◽  
Structure And Dynamics ◽  
Solid Nitrogen ◽  
Rotational Motions ◽  
Real Solid

A molecular dynamics study has been carried out of the structure and dynamics of solid nitrogen in its high pressure, room temperature, plastic crystal phase: cubic Pm3n. We employed a system of 512 molecules interacting via atom–atom potentials. As in the real solid our simulated crystal is composed of two types of molecules whose dynamical behaviour is quite distinct. We present calculations of the power spectra associated with translational and rotational motions as well as the phonon response embodied in the dynamical structure factor S(Q, ω).

scholarly journals Evidence for a high-pressure isostructural transition in nitrogen

2021 ◽  
Author(s):  
Chunmei Fan ◽  
Shan Liu ◽  
Jingyi Liu ◽  
Qiqi Tang ◽  
Binbin Wu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Phase Diagram ◽  
High Pressure ◽  
Lattice Parameter ◽  
Molecular Symmetry ◽  
Solid Nitrogen ◽  
Slight Rotation ◽  
Pressure Phase ◽  
Important Objective ◽  
Isostructural Phase Transition

Abstract Understanding the high-pressure behaviors of diatomic molecules (H2, O2, N2, etc) is one of the most basic as well as important objective in high-pressure physics. Under high pressure diatomic molecule solids often exhibit rich crystal polymorphs. High-pressure isostructural transitions (HPIT) in solid hydrogen and oxygen, involving considerable technical challenges, have been experimentally documented, suggesting a possible prevailing pressure-driven molecular-symmetry breaking pathway. In spite of extensive efforts, however, HPIT in nitrogen has not been observed so far. Here we present a monoclinic-to-monoclinic isostructural phase transition (λ→λ’) in solid nitrogen at approximately 50 GPa accompanied with anomalies in lattice parameter, atomic volume and Raman vibron modes. Further ab initio calculations strongly confirmed the HPIT in nitrogen, showing the weak distortion of orientation and slight rotation in nitrogen molecules possibly drive the low-pressure phase, λ-N2, to an isostructural high-pressure phase, λ’-N2 without changing crystal symmetry. In addition, we probed in detail the phase stability and revisited the pressure-temperature (P-T) phase diagram of nitrogen, discovering a new high-pressure amorphous phase, η’-N2.

Nanocages of layered BN: Super-high-pressure nanocells for formation of solid nitrogen

2002 ◽  
Vol 116 (19) ◽  
pp. 8523 ◽  
Author(s):  
D. Golberg ◽  
Y. Bando ◽  
T. Sato ◽  
N. Grobert ◽  
M. Reyes-Reyes ◽  
...  
Keyword(s):  
High Pressure ◽  
Solid Nitrogen

Structural Transformations in Solid Nitrogen at High Pressure

1983 ◽  
Vol 50 (16) ◽  
pp. 1207-1210 ◽  
Author(s):  
Shuichi Nosé ◽  
Michael L. Klein
Keyword(s):  
High Pressure ◽  
Structural Transformations ◽  
Solid Nitrogen
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