A beamline for high-pressure studies at the Advanced Light Source with a superconducting bending magnet as the source

Kunz, Martin; MacDowell, Alastair A.; Caldwell, Wendel A.; Cambie, Daniella; Celestre, Richard; Domning, Edward E.; Duarte, Robert; Gleason, A. E.; Glossinger, James; Kelez, Nicholas; Plate, D.; Yu, Tony; Zaug, J M; Padmore, H. A.; Jeanloz, Raymond; Alivisatos, A. Paul; Clark, S. M.

doi:10.1107/s0909049505020959

Cited by 146 publications

(98 citation statements)

References 14 publications

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“…When determining pressure using the ruby manometer, the 488nm excitation laser fluence and exposure time were minimized in order to inhibit photo-conversion to grey phosphorus. Data were collected on beamline 12.2.2 at the Advanced Light Source [12,13]. This beamline is equipped with a set of brightness preserving optics that delivers about 2 x 10 10 photons per second into a 10µm focal spot.…”

Section: Methodsmentioning

confidence: 99%

Compressibility of cubic white, orthorhombic black, rhombohedral black, and simple cubic black phosphorus

Clark

Zaug

2010

Phys. Rev. B

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The effect of pressure on the crystal structure of white phosphorus has been studied up to 22.4 GPa. The α phase was found to transform into the α' phase at 0.87 ± 0.04 GPa with a volume change of 0.1 ± 0.3 cc/mol. A fit of a second order BirchMurnaghan equation to the data gave Vo = 16.94 ± 0.08 cc/mol and K o = 6.7 ± 0.5 GPa for the α phase and Vo = 16.4 ± 0.1 cc/mol and K o = 9.1 ± 0.3 GPa for the α' phase. The α' phase was found to transform to the A17 phase of black phosphorus at 2.68 ± 0.34 GPa and then with increasing pressure to the A7 and then simple cubic phase of black phosphorus. A fit of a second order Birch-Murnaghan equation to our data combined with previous measurements gave Vo = 11.43 ± 0.05 cc/mol and K o = 34.7 ± 0.5 GPa for the A17 phase, Vo = 9.62 ± 0.01 cc/mol and K o = 65.0 ± 0.6 GPa for the A7 phase and , Vo = 9.23 ± 0.01 cc/mol and K o = 72.5 ± 0.3 GPa for the simple cubic phase. PACS numbers:Phase transitions, crystallographic aspects of, 61.50.KsHigh-pressure effects, structural properties of materials, 81.40.Vw X-ray diffraction in crystal structure, 61.05.cp

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Section: Methodsmentioning

confidence: 99%

Compressibility of cubic white, orthorhombic black, rhombohedral black, and simple cubic black phosphorus

Clark

Zaug

2010

Phys. Rev. B

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“…Details on the source and optics of beamline 12.2.2 at ALS are given elsewhere 12 . For the present experiment, the X-ray beam was refocused from its primary focal spot of ~150 µm (h)…”

Section: Experimental Procedurementioning

confidence: 99%

“…The procedure to center the sample onto the rotation axis and accurately determine the sample to detector distance is described in Ref. 12. The sample to detector distance was calibrated using a LaB 6 standard with fitting routines as implemented in Fit2d…”

Section: Experimental Procedurementioning

confidence: 99%

In situ laser heating and radial synchrotron x-ray diffraction in a diamond anvil cell

Kunz

Caldwell

Miyagi

et al. 2007

Review of Scientific Instruments

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“…31,32 A setup for single-sided in-situ laser heating of a DAC in radial diffraction geometry was recently implemented on this beamline. 5 In order to remotely change pressure, we constructed an rDAC holding frame which is compatible with various radial diffraction cells.…”

Section: Experimental Techniquementioning

confidence: 99%

“…31 Sample to detector distance and detector non-orthognality were calibrated using a LaB 6 standard. For run 1 at ambient temperature no pressure calibrant was used and pressure was calibrated with a 3 rd order Birch-Murnaghan equation of state for bcc Fe and hcp Fe.…”

Section: Experimental Techniquementioning

confidence: 99%

In situ phase transformation and deformation of iron at high pressure and temperature

Miyagi

Kunz

Knight

et al. 2008

Journal of Applied Physics

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With a membrane based mechanism to allow for pressure change of a sample in a radial diffraction diamond anvil cell (rDAC) and simultaneous infra-red laser heating, it is now possible to investigate texture changes during deformation and phase transformations over a wide range of temperature-pressure conditions. The device is used to study bcc (α), fcc (γ) and hcp (ε) iron. In bcc iron, room temperature compression generates a texture characterized by (100) and (111) poles parallel to the compression direction. During the deformation induced phase transformation to hcp iron, a subset of orientations are favored to transform to the hcp structure first and generate a texture of (01-10) at high angles to the compression direction. Upon further deformation, the remaining grains transform, resulting in a texture that obeys the Burgers relationship of (110) bcc // (0001) hcp . This is in contrast to high temperature results that indicate that texture is developed through dominant pyramidal 〈a+c〉 {2-1-12}〈2-1-13〉 and basal (0001)〈2-1-10〉 slip based on polycrystal plasticity modeling. We also observe that the high temperature fcc phase develops a 110 texture typical for fcc metals deformed in compression.

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A beamline for high-pressure studies at the Advanced Light Source with a superconducting bending magnet as the source

Cited by 146 publications

References 14 publications

Compressibility of cubic white, orthorhombic black, rhombohedral black, and simple cubic black phosphorus

Compressibility of cubic white, orthorhombic black, rhombohedral black, and simple cubic black phosphorus

In situ laser heating and radial synchrotron x-ray diffraction in a diamond anvil cell

In situ phase transformation and deformation of iron at high pressure and temperature

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