Structural study of the high-pressure-high-temperature phase of bismuth using high energy synchrotron radiation Article

Chen, JH, Iwasaki, H, Kikegawa, T. (1997). Structural study of the high-pressure-high-temperature phase of bismuth using high energy synchrotron radiation . JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 58(2), 247-255. 10.1016/S0022-3697(96)00119-9

cited authors

  • Chen, JH; Iwasaki, H; Kikegawa, T

authors

abstract

  • Crystal structure of the high-pressure-high-temperature phase of bismuth BiIV has been studied by means of synchrotron X-ray diffraction using powdered samples compressed in a cubic-type multi-anvil press MAX80. To avoid heavy absorption effect by the sample and surrounding materials, the radiation of an energy of 49.7 keV emitted from the TRISTAN Accumulation Ring (6.5 GeV) was used and diffraction patterns were recorded on an area detector Imaging Plate. Forty reflections observed in the sin θ/λ range from 1.5nm-1 to 5.0 run-1 could be indexed in terms of a monoclinic unit cell with a = 0.6468 nm, b = 0.6578 nm, c = 0.6468 nm and β = 118.88°, in which eight atoms are contained. The space group assigned is P21/n. A least-squares refinement based on the integrated intensities of the diffraction peaks yielded an atomic arrangement, which can be regarded as a distorted body-centered-cubic lattice structure with an average atomic coordination number of eight. Discussion is given on the structural relationship to other high pressure phases of bismuth. © 1997 Elsevier Science Ltd. All rights reserved.

publication date

  • January 1, 1997

published in

Digital Object Identifier (DOI)

start page

  • 247

end page

  • 255

volume

  • 58

issue

  • 2