Visualizing charge densities and electrostatic potentials in materials by synchrotron X-ray powder diffraction

Kato, Kenichi; Tanaka, Hiroshi

doi:10.1080/23746149.2016.1142830

Cited by 28 publications

(29 citation statements)

References 76 publications

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“…PXRD data on sample B were collected on an in-house Rigaku Smartlab diffractometer equipped with a Cu source from 300 to 800 K, and at beamline BL44B2 (Kato et al, 2010;Kato & Tanaka, 2016) with a nitrogen low-temperature and high-temperature blower at SPring8, Japan, at 120, 200 and 300 K with a wavelength of 0.50036 (7) Å and at 300, 400, 550 and 700 K with a wavelength of 0.50027 (5) Å . Furthermore, PXRD data were collected on sample B from 10 to 200 K using a closed-cycle cryostat on beamline BL44B2 with a wavelength of 0.50036 (7) Å .…”

Section: Sample Characterizationmentioning

confidence: 99%

Carrier concentration dependence of structural disorder in thermoelectric Sn_1−xTe

Sist

Hedegaard

Christensen

et al. 2016

Int Union Crystallogr J

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Section: Sample Characterizationmentioning

confidence: 99%

Carrier concentration dependence of structural disorder in thermoelectric Sn_1−xTe

Sist

Hedegaard

Christensen

et al. 2016

Int Union Crystallogr J

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“…Variable-temperature one-dimensional (1D) X-ray diffraction patterns were measured using beamline 44B2 in SPring-8 (Hyogo, Japan) equipped with an imaging-plate area detector 32 . The wavelength (1.08 Å) of incident X-rays was calibrated using cerium oxide (standard reference material 674b).…”

Section: Methodsmentioning

confidence: 99%

Rewriting the phase diagram of a diamagnetic liquid crystal by a magnetic field

et al. 2018

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Magnetic fields have been considered to only interact with organic materials non-destructively, leaving their fundamental structures unaffected, even when a strong magnetic field generated from a superconducting magnet is applied. Here we report an unprecedented observation that a liquid-crystalline mesophase of a diamagnetic molecular assembly with an orthorhombic or a cubic structure is formed selectively in the absence or presence of a strong magnetic field. The constituent molecule is a triphenylene derivative carrying six imidazolium bromide-terminated alkyl side chains and exhibits a cubic, orthorhombic, or hexagonal columnar mesophase when complexed with an appropriate amount of lanthanum(III) bromide. Thermal processing of the La3+-containing liquid-crystalline assembly in the presence of a 10-tesla magnetic field resulted in a phase diagram, in which the orthorhombic phase is completely replaced with the cubic phase. The discovery of this magneto-induced phase-selection offers an insight into the interactions between magnetic fields and organic material.

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“…The three kinds of processes were applied to data acquired by the total-scattering measurement system (Kato et al, 2019) installed at the RIKEN Materials Science beamline BL44B2 (Kato et al, 2010;Kato & Tanaka, 2016) of SPring-8, which we named 'OHGI' (Overlapped High-Grade Intelligencer). OHGI is composed of 15 microstrip modules [MYTHEN (Schmitt et al, 2003), DECTRIS Ltd], each of which has 1280 channels.…”

Section: Applications Of the Three Kinds Of Processes To Ohgimentioning

confidence: 99%

On-demand correction for X-ray response non-uniformity in microstrip detectors by a data-driven approach

Kato

Shigeta²

2020

J Synchrotron Radiat

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A statistical approach, which was previously developed to correct scattering data for X-ray response non-uniformity (XRNU) in microstrip detectors, has been improved to significantly reduce the correcting time. The improved algorithm has succeeded in increasing the utilization rate of data acquired for reference intensity to 98%. As a result, the correcting time was reduced from half a day to half an hour, which was shorter than the typical measuring time of a sample. Moreover, the present approach was found to yield better correction results than the previous one. The data-driven approach enabled the on-demand correction for XRNU according to the detector and experimental settings. The present study will encourage the correction of scattering data for XRNU in area detectors.

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Visualizing charge densities and electrostatic potentials in materials by synchrotron X-ray powder diffraction

Cited by 28 publications

References 76 publications

Carrier concentration dependence of structural disorder in thermoelectric Sn_1−xTe

Carrier concentration dependence of structural disorder in thermoelectric Sn_1−xTe

Rewriting the phase diagram of a diamagnetic liquid crystal by a magnetic field

On-demand correction for X-ray response non-uniformity in microstrip detectors by a data-driven approach

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Visualizing charge densities and electrostatic potentials in materials by synchrotron X-ray powder diffraction

Cited by 28 publications

References 76 publications

Carrier concentration dependence of structural disorder in thermoelectric Sn1−xTe

Carrier concentration dependence of structural disorder in thermoelectric Sn1−xTe

Rewriting the phase diagram of a diamagnetic liquid crystal by a magnetic field

On-demand correction for X-ray response non-uniformity in microstrip detectors by a data-driven approach

Contact Info

Product

Resources

About

Carrier concentration dependence of structural disorder in thermoelectric Sn_1−xTe

Carrier concentration dependence of structural disorder in thermoelectric Sn_1−xTe