High-pressure generation using double stage micro-paired diamond anvils shaped by focused ion beam

Sakai, Takeshi; Yagi, T.; Ohfuji, Hiroaki; Irifune, Tetsuo; Ohishi, Yasuo; Hirao, Naohisa; Suzuki, Yuya; Kuroda, Yasushi; Asakawa, Takayuki; Kubo, Takashi

doi:10.1063/1.4914844

Cited by 47 publications

(27 citation statements)

References 27 publications

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“…Using a double stage mechanism, pressures above 500 GPa have been reported [27,48,49]. However, so far no other groups have succeeded in generating similar high pressures using this technique [50,51]. In particular, the pressure distribution around the tip of the second anvil remains unknown.…”

Section: Anvilsmentioning

confidence: 99%

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High-pressure studies with x-rays using diamond anvil cells

2016

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Pressure profoundly alters all states of matter. The symbiotic development of ultrahighpressure diamond anvil cells, to compress samples to sustainable multi-megabar pressures; and synchrotron x-ray techniques, to probe materials' properties in situ, has enabled the exploration of rich high-pressure (HP) science. In this article, we first introduce the essential concept of diamond anvil cell technology, together with recent developments and its integration with other extreme environments. We then provide an overview of the latest developments in HP synchrotron techniques, their applications, and current problems, followed by a discussion of HP scientific studies using x-rays in the key multidisciplinary fields. These HP studies include: HP x-ray emission spectroscopy, which provides information on the filled electronic states of HP samples; HP x-ray Raman spectroscopy, which probes the HP chemical bonding changes of light elements; HP electronic inelastic x-ray scattering spectroscopy, which accesses high energy electronic phenomena, including electronic band structure, Fermi surface, excitons, plasmons, and their dispersions; HP resonant inelastic x-ray scattering spectroscopy, which probes shallow core excitations, multiplet structures, and spin-resolved electronic structure; HP nuclear resonant x-ray spectroscopy, which provides phonon densities of state and time-resolved Mössbauer information; HP x-ray imaging, which provides information on hierarchical structures, dynamic processes, and internal strains; HP x-ray diffraction, which determines the fundamental structures and densities of single-crystal, polycrystalline, nanocrystalline, and non-crystalline materials; and HP radial x-ray diffraction, which yields deviatoric, elastic and rheological information. Integrating these tools with hydrostatic or uniaxial pressure media, laser and resistive heating, and cryogenic cooling, has enabled investigations of the structural, vibrational, electronic, and magnetic properties of materials over a wide range of pressure-temperature conditions.

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Section: Anvilsmentioning

confidence: 99%

“…DACs are currently capable of obtaining pressures in excess of 400 GPa. With particular anvil geometry including the double stage arrangement [48,50], there is currently an international effort to extend the pressure range to 1 TPa and beyond. The extended pressure range will revolutionarily redefine the scope of HP research.…”

Section: Future Perspectivesmentioning

confidence: 99%

High-pressure studies with x-rays using diamond anvil cells

2016

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“…These peaks are shifted from their typically quoted values but with the charge neutralization system in use it is difficult to precisely locate carbon peaks. The separation of the two peaks, however, is known to be approximately 1 eV and the FWHM of the peaks for this system at this pass energy are 1.1 eV for sp 2 carbon and 1.45 eV for sp 3 carbon. The ratios then of the peaks were determined by holding the FWHM and approximate spacing constant and fitting the height and positions only.…”

Section: Resultsmentioning

confidence: 99%

“…1 Recent advances have made it possible to generate much higher pressures up to 1065 GPa in DACs by utilizing diamond anvils which have 'second stage' pressure generators on the culets of primary diamond anvils. 2, 3 These second stages have been developed by various methods. Dubrovinskaia et.…”

Section: Introductionmentioning

confidence: 99%

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Nanocrystalline diamond micro-anvil grown on single crystal diamond as a generator of ultra-high pressures

et al. 2016

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By combining mask-less lithography and chemical vapor deposition (CVD) techniques, a novel two-stage diamond anvil has been fabricated. A nanocrystalline diamond (NCD) micro-anvil 30 μm in diameter was grown at the center of a [100]-oriented, diamond anvil by utilizing microwave plasma CVD method. The NCD micro-anvil has a diamond grain size of 115 nm and micro-focused Raman and X-ray Photoelectron spectroscopy analysis indicate sp3-bonded diamond content of 72%. These CVD grown NCD micro-anvils were tested in an opposed anvil configuration and the transition metals osmium and tungsten were compressed to high pressures of 264 GPa in a diamond anvil cell.

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