A multipurpose miniature diamond anvil cell

Sterer, Eran; Pasternak, M.; Taylor, R. D.

doi:10.1063/1.1141433

Cited by 94 publications

(40 citation statements)

References 6 publications

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“…The sample was placed inside cylindrical cavities of a Re gasket following indentation to 30-µm thickness. TAU miniature opposing-plate and piston-cylinder diamond anvil cells (DAC) were used to generate pressures up to 70 and 100 GPa, respectively [8,9]. The anvil culets ranged from 200 to 500 µm in diameter with sample cavities from 100 x 30 µm to 250 x 50 µm.…”

Section: Methodsmentioning

confidence: 99%

Intriguing sequence of GaFeO3structures and electronic states to 70 GPa

Arielly

Greenberg

et al. 2011

Phys. Rev. B

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Structural studies of the ferrimagnetic (T N =200 K) Mott insulator GaFeO 3 (SG Pc2 1 n) to 70 GPa, complemented by 57 Fe Mössbauer spectroscopy and resistance (R) measurements at compression, decompression and recompression reveal a fascinating sequence of structures. Starting at ~ 25 GPa a new structure, an orthorhombic perovskite (SG Pbnm), is sluggishly formed followed by a volume V(P) drop of 5.4%. The complete formation of the perovskite occurs at 42 GPa. In the 0 -33 GPa range T N reaches 300 K and R(P) decreases by one-order of magnitude. At 53 GPa an isostructural transition is detected, characterized by a discontinuous drop of V(P) by ~3%. Mössbauer spectra reveal a non-magnetic component coexisting with the magnetic one at ~ 60 GPa. Its abundance increases and above 77 GPa no sign of a magnetic hyperfine interaction is detected down to 5 K.Concurrently, one observes a continuous yet precipitous decrease in R(P) taking place in the 53-68 GPa range, leading to an onset of the metallic state at P = 68 GPa. These electronic/magnetic features of the high pressure (HP) perovskite are consistent with a Mott transition.With pressure decrease, below 50 GPa, the insulating perovskite is recovered, and at ~24 GPa a 1 storder structural transition takes place to a LiNbO 3 -type structure with SG R3c. This structure remains stable down to ambient pressure and with recompression it is stable up to 50 GPa, afterwards it transforms back to the HP perovskite structure. It is noteworthy that this transition occurs at the same

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Section: Methodsmentioning

confidence: 99%

Intriguing sequence of GaFeO3structures and electronic states to 70 GPa

Arielly

Greenberg

et al. 2011

Phys. Rev. B

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“…17 However, the standard DAC remains the most commonly used setup for very high pressure work due to its relative simplicity and the considerable pressure range which can be achieved safely.…”

Section: High Pressure Crystallography Techniquesmentioning

confidence: 99%

Structure of organic solids at low temperature and high pressure

et al. 2014

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Publisher's copyright statement:Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. This tutorial review looks at structural and supramolecular chemistry of molecular solids under extreme 5 conditions, and introduces the instrumentation and facilities that enable single crystal diffraction studies on molecular crystals at both high pressure and low temperature. The equipment used for crystallography under extreme conditions is explored, particularly pressure cells such as the diamond anvil cell, and their mechanism of action, as well the as cryogenic apparatus which allows materials to be cooled to significantly low temperatures. The review also covers recent advances in the structural chemistry of 10 molecular solids under extreme conditions with an emphasis on the use of singe crystal crystallography in high pressure and low temperature environments to probe polymorphism and supramolecular interactions.

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“…38,40 Powders were loaded into a Merrill-Bassett, Tel-Aviv-type, diamond-anvil cell 41 along with ruby chips for pressure measurement by the ruby florescence method. 42 The cells were prepared using rhenium gaskets and diamonds with 350 µm culets.…”

Section: Methodsmentioning

confidence: 99%

Polaron-ion correlations inLixFePO4studied by x-ray nuclear resonant forward scattering at elevated pressure and temperature

et al. 2014

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Valence fluctuations of Fe2+ and Fe 3+ were studied in a solid solution of LixFePO4 by nuclear resonant forward scattering of synchrotron x-rays while the sample was heated in a diamond-anvil pressure cell. The spectra acquired at different temperatures and pressures were analyzed for the frequencies of valence changes using the Blume-Tjon model of a system with a fluctuating Hamiltonian. These frequencies were analyzed to obtain activation energies and an activation volume for polaron hopping. There was a large suppression of hopping frequency with pressure, giving an activation volume for polaron hopping of 5.8±0.7Å3 . This large, positive value is typical of ion diffusion, which indicates correlated motions of polarons and Li + ions that alter the dynamics of both. Monte Carlo simulations were used to estimate the strength of the polaron-ion interaction energy.

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A multipurpose miniature diamond anvil cell

Cited by 94 publications

References 6 publications

Intriguing sequence of GaFeO3structures and electronic states to 70 GPa

Intriguing sequence of GaFeO3structures and electronic states to 70 GPa

Structure of organic solids at low temperature and high pressure

Polaron-ion correlations inLixFePO4studied by x-ray nuclear resonant forward scattering at elevated pressure and temperature

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