skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: X-Ray Diffraction Study of Elemental Erbium to 65 GPa

Abstract

We have investigated phase transitions in elemental erbium in a diamond anvil cell up to 65 GPa using x-ray powder diffraction methods. We present preliminary evidence of a series of phase transitions that appear to follow the expected hcp {yields} Sm-type {yields} dhcp {yields} distorted fcc sequence. In particular, we believe that we have evidence for the predicted dhcp {yields} distorted fcc transition between 43 GPa and 65 GPa.

Authors:
; ; ; ;  [1]
  1. (UNLV)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
USDOE
OSTI Identifier:
1008965
Resource Type:
Conference
Resource Relation:
Conference: Joint 20th AIRAPT and 43rd EHPRG International Conference;;
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; ERBIUM; X-RAY DIFFRACTION; PRESSURE RANGE GIGA PA; PHASE TRANSFORMATIONS

Citation Formats

Pravica, M.G., Lipinska-Kalita, K., Quine, Z., Romano, E., and Nicol, M.F. X-Ray Diffraction Study of Elemental Erbium to 65 GPa. United States: N. p., 2006. Web.
Pravica, M.G., Lipinska-Kalita, K., Quine, Z., Romano, E., & Nicol, M.F. X-Ray Diffraction Study of Elemental Erbium to 65 GPa. United States.
Pravica, M.G., Lipinska-Kalita, K., Quine, Z., Romano, E., and Nicol, M.F. Thu . "X-Ray Diffraction Study of Elemental Erbium to 65 GPa". United States. doi:.
@article{osti_1008965,
title = {X-Ray Diffraction Study of Elemental Erbium to 65 GPa},
author = {Pravica, M.G. and Lipinska-Kalita, K. and Quine, Z. and Romano, E. and Nicol, M.F.},
abstractNote = {We have investigated phase transitions in elemental erbium in a diamond anvil cell up to 65 GPa using x-ray powder diffraction methods. We present preliminary evidence of a series of phase transitions that appear to follow the expected hcp {yields} Sm-type {yields} dhcp {yields} distorted fcc sequence. In particular, we believe that we have evidence for the predicted dhcp {yields} distorted fcc transition between 43 GPa and 65 GPa.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Feb 02 00:00:00 EST 2006},
month = {Thu Feb 02 00:00:00 EST 2006}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • We have investigated phase transitions in elemental erbium in a diamond anvil cell (DAC) up to 70 GPa using angular-dispersive x-ray powder diffraction methods. We present evidence of a series of phase transitions that appear to follow the anticipated hcp{yields}Sm-type{yields}double hcp (dhcp){yields}distorted fcc sequence. In particular, we present evidence for the predicted dhcp{yields}distorted fcc transition above 63 GPa. Equation of state data are also presented up to 70 GPa.
  • We have performed a high-pressure synchrotron x-ray diffraction experiment on elemental thulium in a diamond anvil cell to 86 GPa. A series of phase transitions was observed as a function of pressure that follow the expected hexagonal-close-packed{yields}Samarium-type{yields}double hexagonal-close-packed{yields}distorted distorted face-centered cubic sequence. In particular, we present evidence for the predicted double hexagonal close packed{yields}distorted face-centered cubic phase transition near 68 GPa. Equation of state data for thulium are also reported up to 86 GPa.
  • The first series of measurements to determine the structural behavior of californium (Cf) metal under pressure has been carried out. The initial dhcp structure transformed sluggishly with increasing pressure to a fcc structure. A bulk modulus of 50(5) GPa was derived for dhcp Cf metal from the relative volume (V/V/sub 0/) data to 10 GPa.
  • The dispersion of light by multilayer combined microstructure diffraction gratings is affected by the scattering cross-sections of the elements used to synthesize the multilayer. This effect will be analytically evaluated, and the results of model calculations for spectral regions of interest presented. Experimental results for these domains will also be presented and compared with data from the literature and with the results of modelling calculations. 12 refs., 7 figs., 1 tab.