Improved calibtration curve for the Sm2+:BaFCl pressure sensor

1993 ◽  
Vol 26 (6) ◽  
pp. 843-845 ◽  
Author(s):  
P. Comodi ◽  
P. F. Zanazzi
Keyword(s):  
Equation Of State ◽  
Pressure Sensor ◽  
Electronic Transition ◽  
Pressure Range ◽  
Diamond Anvil Cell ◽  
Moderate Pressure ◽  
Pressure Measurements ◽  
Luminescence Line ◽  
Diamond Anvil ◽  
Estimated Error

The pressure sensor proposed by Shen, Gregorian & Holzapfel [High Press. Res. (1991), 7, 73–75], based on the pressure-dependent shift of the luminescence line due to the 5 D 0−7 F 0 electronic transition of Sm2+ in a matrix of BaFCl, has been tested in a diamond-anvil cell and calibrated against the R 1−R 2 doublet shift of ruby and the known NaCl equation of state, in the pressure range between 0.0001 and 4.3 GPa. The parabolic dependence of the shift from the pressure can be approximated by the equation Δ(nm) = 1.46P − 0.047P 2, where the shift, Δ, is in nm and the pressure, P, in GPa. The estimated error in the pressure measurements is 5%. The Sm2+: BaFCl luminescence sensor can be advantageously used in the low to moderate pressure range (0.0001–5 GPa or more).

scholarly journals Measurement of the sound velocity of shock compressed water

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hua Shu ◽  
Jiangtao Li ◽  
Yucheng Tu ◽  
Junjian Ye ◽  
Junyue Wang ◽  
...  
Keyword(s):  
Experimental Data ◽  
Molecular Dynamics ◽  
Equation Of State ◽  
Liquid Water ◽  
Diamond Anvil Cell ◽  
Quantum Molecular Dynamics ◽  
Laser Shock ◽  
Diamond Anvil ◽  
Ionization Processes ◽  
Sound Velocities

AbstractThe sound velocities of water in the Hugoniot states are investigated by laser shock compression of precompressed water in a diamond anvil cell. The obtained sound velocities in the off-Hugoniot region of liquid water at precompressed conditions are used to test the predictions of quantum molecular dynamics (QMD) simulations and the SESAME equation-of-state (EOS) library. It is found that the prediction of QMD simulations agrees with the experimental data while the prediction of SESAME EOS library underestimates the sound velocities probably due to its improper accounting for the ionization processes.

Diamond-Anvil Cell Observations of a New Methane Hydrate Phase in the 100-MPa Pressure Range

2001 ◽  
Vol 105 (19) ◽  
pp. 4664-4668 ◽  
Author(s):  
I-Ming Chou ◽  
Anurag Sharma ◽  
Robert C. Burruss ◽  
Russell J. Hemley ◽  
Alexander F. Goncharov ◽  
...  
Keyword(s):  
Methane Hydrate ◽  
Pressure Range ◽  
Diamond Anvil Cell ◽  
Hydrate Phase ◽  
Diamond Anvil

THE ENHANCED SUPERCONDUCTIVITY OF Cu-1234 UNDER HIGH PRESSURE

2005 ◽  
Vol 19 (01n03) ◽  
pp. 335-337 ◽  
Author(s):  
C. Q. JIN ◽  
X. M. QIN ◽  
K. SHIMIZU ◽  
M. NISHIYAMA ◽  
T. NAMIKI ◽  
...  
Keyword(s):  
Pressure Range ◽  
Diamond Anvil Cell ◽  
Pressure Effect ◽  
Positive Pressure ◽  
Superconducting Transition ◽  
Wide Pressure Range ◽  
Diamond Anvil ◽  
The One ◽  
Enhanced Superconductivity ◽  
Wide Pressure

The evolution of superconducting transition of CuBa 2 Ca 3 Cu 4 O 10+δ (i.e. Cu -1234) superconductor has been studied by using diamond anvil cell technique. The Tc of Cu -1234 can be enhanced continuously from ambient reaching to 123 K at 15 GPa. This seems the one more system besides Hg -12( n -1) n which demonstrate the positive pressure effect on Tc over a wide pressure range above 10 GPa.

PRESSURE-INDUCED SUPERCONDUCTIVITY IN SYMPLE METALS

2005 ◽  
Vol 19 (01n03) ◽  
pp. 259-261
Author(s):  
KATSUYA SHIMIZU
Keyword(s):  
Pressure Range ◽  
Diamond Anvil Cell ◽  
Molecular Crystals ◽  
Dilution Refrigerator ◽  
Extreme Condition ◽  
Organic Molecular Crystals ◽  
Ultra High Pressure ◽  
Experimental Apparatus ◽  
Diamond Anvil ◽  
Very Low Temperature

Experimental results in search for pressure-induced superconductivity are reviewed. Typical examples are simple inorganic and organic molecular crystals, magnetic metals, and elements. We have developed complex extreme condition of very low temperature down to 30 mK and ultra high pressure exceeding 200 GPa by assembling compact diamond-anvil cell (DAC) on a powerful 3 He /4 He dilution refrigerator. Using the newly developed apparatus and techniques, we have studied superconductivity in various materials in various pressure range. In this paper, we will shortly review our newly developed experimental apparatus and techniques and discuss about examples of pressure-induced superconductivity in simple metals.

scholarly journals Structural Study of δ-AlOOH Up to 29 GPa

Minerals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1055
Author(s):  
Dariia Simonova ◽  
Elena Bykova ◽  
Maxim Bykov ◽  
Takaaki Kawazoe ◽  
Arkadiy Simonov ◽  
...  
Keyword(s):  
Phase Transition ◽  
Synchrotron Radiation ◽  
Equation Of State ◽  
Room Temperature ◽  
Diamond Anvil Cell ◽  
Volume Data ◽  
X Ray Diffraction ◽  
X Ray ◽  
Diamond Anvil ◽  
Murnaghan Equation

A structure and equation of the state of δ-AlOOH has been studied at room temperature, up to 29.35 GPa, by means of single crystal X-ray diffraction in a diamond anvil cell using synchrotron radiation. Above ~10 GPa, we observed a phase transition with symmetry changes from P21nm to Pnnm. Pressure-volume data were fitted with the second order Birch-Murnaghan equation of state and showed that, at the phase transition, the bulk modulus (K0) of the calculated wrt 0 pressure increases from 142(5) to 216(5) GPa.

scholarly journals Author Correction: Thermal equation of state of ruthenium characterized by resistively heated diamond anvil cell

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Simone Anzellini ◽  
Daniel Errandonea ◽  
Claudio Cazorla ◽  
Simon MacLeod ◽  
Virginia Monteseguro ◽  
...  
Keyword(s):  
Equation Of State ◽  
Diamond Anvil Cell ◽  
Thermal Equation ◽  
Thermal Equation Of State ◽  
Diamond Anvil ◽  
Resistively Heated

Equation of state and electrical transport properties of mixture of Li1.2Mn0.54Co0.13Ni0.13O2 and LiNi0.87Co0.09Mn0.03Al0.01O2 at high pressure

2021 ◽  
pp. 2150227
Author(s):  
Lun Xiong ◽  
Pu Tu ◽  
Yongqing Hu ◽  
Xiang Hou ◽  
Shiyun Wu ◽  
...  
Keyword(s):  
High Pressure ◽  
Equation Of State ◽  
Electrical Transport ◽  
Room Temperature ◽  
Diamond Anvil Cell ◽  
Hexagonal Structure ◽  
X Ray Diffraction ◽  
Electrical Transport Properties ◽  
X Ray ◽  
Diamond Anvil

The equation of state (EOS) of mixture of Li[Formula: see text]Mn[Formula: see text]Co[Formula: see text]Ni[Formula: see text]O2 and LiNi[Formula: see text] Co[Formula: see text]Mn[Formula: see text]Al[Formula: see text]O2 was studied by synchrotron radiation X-ray diffraction (XRD) at room-temperature in a diamond anvil cell (DAC). The results showed that the hexagonal structure is maintained to the highest pressure of 23.1 GPa. The bulk modulus and its first derivative obtained from XRD data are [Formula: see text] GPa and [Formula: see text], respectively. In addition, we have investigated the high-pressure electrical conductivity of the mixture of Li[Formula: see text]Mn[Formula: see text]Co[Formula: see text]Ni[Formula: see text]O2 and LiNi[Formula: see text]Co[Formula: see text]Mn[Formula: see text]Al[Formula: see text]O2 to 22.9 GPa in a DAC. It is found that the resistance decreases with the increase of pressure and changes exponentially.

scholarly journals Diamond anvil cell behavior up to 4 Mbar

2018 ◽  
Vol 115 (8) ◽  
pp. 1713-1717 ◽  
Author(s):  
Bing Li ◽  
Cheng Ji ◽  
Wenge Yang ◽  
Junyue Wang ◽  
Ke Yang ◽  
...  
Keyword(s):  
Pressure Range ◽  
Diamond Anvil Cell ◽  
Static Pressure ◽  
Thickness Variation ◽  
Cell Behavior ◽  
Pressure Loading ◽  
X Ray ◽  
Pressure Limit ◽  
Diamond Anvils ◽  
Diamond Anvil

The diamond anvil cell (DAC) is considered one of the dominant devices to generate ultrahigh static pressure. The development of the DAC technique has enabled researchers to explore rich high-pressure science in the multimegabar pressure range. Here, we investigated the behavior of the DAC up to 400 GPa, which is the accepted pressure limit of a conventional DAC. By using a submicrometer synchrotron X-ray beam, double cuppings of the beveled diamond anvils were observed experimentally. Details of pressure loading, distribution, gasket-thickness variation, and diamond anvil deformation were studied to understand the generation of ultrahigh pressures, which may improve the conventional DAC techniques.

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