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A Practical Review of the Laser-Heated Diamond Anvil Cell for University Laboratories and Synchrotron Applications. CRYSTALS 2020. [DOI: 10.3390/cryst10060459] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In the past couple of decades, the laser-heated diamond anvil cell (combined with in situ techniques) has become an extensively used tool for studying pressure-temperature-induced evolution of various physical (and chemical) properties of materials. In this review, the general challenges associated with the use of the laser-heated diamond anvil cells are discussed together with the recent progress in the use of this tool combined with synchrotron X-ray diffraction and absorption spectroscopy.
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Smith D, Sneed D, Dasenbrock-Gammon N, Snider E, Smith GA, Childs C, Pigott JS, Velisavljevic N, Park C, Lawler KV, Dias RP, Salamat A. Anomalous Conductivity in the Rutile Structure Driven by Local Disorder. J Phys Chem Lett 2019; 10:5351-5356. [PMID: 31436423 DOI: 10.1021/acs.jpclett.9b01633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Many rutile-type materials are characterized by a softness in shear with pressure which is coupled to a Raman-active librational motion. Combining direct studies of anion positions in SnO2 with measurements of its electronic properties, we find a correlation between O sublattice disorder between 5 and 10 GPa and an anomalous decrease up to 4 orders of magnitude in electrical resistance. Hypotheses into the atomistic nature of the phenomenon are evaluated via ab initio calculations guided by extended X-ray absorption fine structure spectroscopy analysis, and the most likely mechanism is found to be the displacement of single anions resulting from the pressure-induced softening of the librational mode. On the basis of this mechanism, we propose that the same behavior should feature across all materials exhibiting a rutile → CaCl2 phase transition and that conductivity in other rutile-type materials could be facilitated at ambient pressure by appropriate design of devices to enhance defects of this nature.
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Affiliation(s)
- Dean Smith
- Department of Physics & Astronomy & HiPSEC , University of Nevada Las Vegas , Las Vegas , Nevada 89154 , United States
| | - Daniel Sneed
- Department of Physics & Astronomy & HiPSEC , University of Nevada Las Vegas , Las Vegas , Nevada 89154 , United States
| | - Nathan Dasenbrock-Gammon
- Department of Physics & Astronomy , University of Rochester , Rochester , New York 14627 , United States
| | - Elliot Snider
- Department of Mechanical Engineering , University of Rochester , Rochester , New York 14627 , United States
| | - G Alexander Smith
- Department of Chemistry & Biochemistry & HiPSEC , University of Nevada Las Vegas , Las Vegas , Nevada 89154 , United States
| | - Christian Childs
- Department of Physics & Astronomy & HiPSEC , University of Nevada Las Vegas , Las Vegas , Nevada 89154 , United States
| | - Jeffrey S Pigott
- Shock & Detonation Physics (M-9) , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States
| | - Nenad Velisavljevic
- Physics Division-Physical & Life Sciences Directorate , Lawrence Livermore National Laboratory , Livermore , California 94550 , United States
- HPCAT, Advanced Photon Source , Argonne National Laboratory , Illinois 60439 , United States
| | - Changyong Park
- HPCAT, Advanced Photon Source , Argonne National Laboratory , Illinois 60439 , United States
| | - Keith V Lawler
- Department of Chemistry & Biochemistry & HiPSEC , University of Nevada Las Vegas , Las Vegas , Nevada 89154 , United States
| | - Ranga P Dias
- Department of Physics & Astronomy , University of Rochester , Rochester , New York 14627 , United States
| | - Ashkan Salamat
- Department of Physics & Astronomy & HiPSEC , University of Nevada Las Vegas , Las Vegas , Nevada 89154 , United States
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Sneed D, Kearney JSC, Smith D, Smith JS, Park C, Salamat A. Probing disorder in high-pressure cubic tin (IV) oxide: a combined X-ray diffraction and absorption study. JOURNAL OF SYNCHROTRON RADIATION 2019; 26:1245-1252. [PMID: 31274450 DOI: 10.1107/s1600577519003904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 03/21/2019] [Indexed: 06/09/2023]
Abstract
The transparent conducting oxide, SnO2, is a promising optoelectronic material with predicted tailorable properties via pressure-mediated band gap opening. While such electronic properties are typically modeled assuming perfect crystallinity, disordering of the O sublattice under pressure is qualitatively known. Here a quantitative approach is thus employed, combining extended X-ray absorption fine-structure (EXAFS) spectroscopy with X-ray diffraction, to probe the extent of Sn-O bond anharmonicities in the high-pressure cubic (Pa\bar{3}) SnO2 - formed as a single phase and annealed by CO2 laser heating to 2648 ± 41 K at 44.5 GPa. This combinational study reveals and quantifies a large degree of disordering in the O sublattice, while the Sn lattice remains ordered. Moreover, this study describes implementation of direct laser heating of non-metallic samples by CO2 laser alongside EXAFS, and the high quality of data which may be achieved at high pressures in a diamond anvil cell when appropriate thermal annealing is applied.
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Affiliation(s)
- Daniel Sneed
- Department of Physics and Astronomy, and HiPSEC, University of Nevada Las Vegas, Las Vegas, NV 89154, USA
| | - John S C Kearney
- Department of Physics and Astronomy, and HiPSEC, University of Nevada Las Vegas, Las Vegas, NV 89154, USA
| | - Dean Smith
- Department of Physics and Astronomy, and HiPSEC, University of Nevada Las Vegas, Las Vegas, NV 89154, USA
| | - Jesse S Smith
- HPCAT, X-ray Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Changyong Park
- HPCAT, X-ray Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Ashkan Salamat
- Department of Physics and Astronomy, and HiPSEC, University of Nevada Las Vegas, Las Vegas, NV 89154, USA
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