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Comparison of the high-pressure behavior of the cerium oxides Ce2O3 and CeO2

Journal Article · · Physical Review B
 [1];  [1];  [1];  [1];  [1];  [2];  [2];  [3];  [3]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of Washington, Seattle, WA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
We studied the high-pressure behavior of Ce2O3 using angle-dispersive x-ray diffraction to 70 GPa and compared with that of CeO2. Up to the highest pressure Ce2O3 remains in the hexagonal phase (space group 164, P ¯32/m1) typical for the lanthanide sesquioxides. We did not observe a theoretically predicted phase instability for 30 GPa. The isothermal bulk modulus and its pressure derivative for the quasihydrostatic case are B0 = 111 ± 2 GPa, B'0 = 4.7 ± 0.3, and for the case without pressure-transmitting medium B0 = 104 ±4 GPa, B'0 = 6.5 ± 0.4. Starting from ambient-pressure magnetic susceptibility measurements for both oxides in highly purified form,we find that the Ce atom in Ce2O3 behaves like a trivalent Ce3+ ion (2.57μB per Ce atom) in contrast to previously published data. Since x-ray emission spectroscopy of the Lγ (4d3/2 → 2p1/2) transition is sensitive to the 4f -electron occupancy, we also followed the high-pressure dependence of this line for both oxides up to 50 GPa. We observed no change of the respective line shape, indicating that the 4f -electron configuration is stable for both materials. We posit from this data that the 4f electrons do not drive the volume collapse of CeO2 from the high-symmetry, low-pressure fluorite structure to the lower-symmetry orthorhombic phase.
Research Organization:
Carnegie Inst. of Washington, Argonne, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-06CH11357; AC52-07NA27344; NA0001974; NA0002006; SC0002194; SC0008580
OSTI ID:
1240965
Alternate ID(s):
OSTI ID: 1237507
OSTI ID: 1238280
OSTI ID: 1379168
Report Number(s):
LLNL-JRNL--675872
Journal Information:
Physical Review B, Journal Name: Physical Review B Journal Issue: 6 Vol. 93; ISSN 2469-9950; ISSN PRBMDO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (49)

Alternative energy technologies journal January 2000
Synthesis of Microcrystalline Ce 2 O 3 and Formation of Solid Solutions between Cerium and Lanthanum Oxides: Microcrystalline Ce 2 O 3 and Formation of Solid Solutions journal April 2014
Structural and elastic properties of Ce2O3 under pressure from LDA+U method journal August 2013
The crystal structure of A-Ce2O3 journal August 1985
The electronic structure of CeO2 and PrO2 journal July 1983
Neutron diffraction study of Ce2O3 journal February 1982
Volume collapse in the Kondo lattice journal July 1982
Bulk modulus of CeO2 and PrO2—An experimental and theoretical study journal September 2005
Thermochemical hydrogen production from a two-step solar-driven water-splitting cycle based on cerium oxides journal December 2006
Powder diffraction analysis of cerium dioxide at high pressure journal June 1993
Alternative energy technologies journal November 2001
Direct study of the f-electron configuration in lanthanide systems journal January 2011
Reduction of CeO 2 by hydrogen. Magnetic susceptibility and Fourier-transform infrared, ultraviolet and X-ray photoelectron spectroscopy measurements journal January 1991
Theoretical study of CeO2 and Ce2O3 using a screened hybrid density functional journal July 2006
The α-γ transition in cerium is a Mott transition journal September 1974
A self-consistent DFT + DMFT scheme in the projector augmented wave method: applications to cerium, Ce 2 O 3 and Pu 2 O 3 with the Hubbard I solver and comparison to DFT + U journal February 2012
and x-ray emission lines of rare-earth trifluorides and journal December 1997
Nature of the 5 f electrons in the actinide series journal April 1975
4 f - and core-level photoemission satellites in cerium compounds journal April 1983
Mixed-valent ground state of Ce O 2 journal August 1983
Covalent insulator CeO 2 : Optical reflectivity measurements journal July 1987
X-ray absorption studies of CeO 2 , PrO 2 , and TbO 2 . II. Rare-earth valence state by L III absorption edges journal July 1987
Pressure-induced changes in L III x-ray-absorption near-edge structure of Ce O 2 and Ce F 4 : Relevance to 4 f -electronic structure journal November 1988
Many-body effects in praesodymium core-level spectroscopies of PrO 2 journal August 1988
High-pressure x-ray diffraction study of CeO 2 to 70 GPa and pressure-induced phase transformation from the fluorite structure journal October 1988
Theory of x-ray-absorption spectra in PrO 2 and some other rare-earth compounds journal January 1991
Defect-induced Raman spectra in doped CeO 2 journal November 1994
Electronic, bonding, and optical properties of CeO 2 and Ce 2 O 3 from first principles journal August 2001
Resonant inelastic x-ray scattering at the Ce L 3 edge of CePO 4 and CeO 2 : Implications for the valence of CeO 2 and related phenomena journal July 2005
Modeling of Ce O 2 , Ce 2 O 3 , and Ce O 2 − x in the LDA + U formalism journal January 2007
First-principles LDA + U and GGA + U study of cerium oxides: Dependence on the effective U parameter journal January 2007
Stability of the Ce 2 O 3 phases: A DFT + U investigation journal November 2007
Mixed valency in cerium oxide crystallographic phases: Valence of different cerium sites by the bond valence method journal April 2009
Phase stability of the rare-earth sesquioxides under pressure journal September 2009
Different routes to pressure-induced volume collapse transitions in gadolinium and terbium metals journal December 2013
X-ray Emission Spectroscopy of Cerium Across the γ − α Volume Collapse Transition journal November 2012
Kondo Volume Collapse and the γ → α Transition in Cerium journal October 1982
Spectroscopic Evidence for Localized and Extended f -Symmetry States in Ce O 2 journal July 1984
Quantum Origin of the Oxygen Storage Capability of Ceria journal September 2002
4 f Delocalization in Gd: Inelastic X-Ray Scattering at Ultrahigh Pressure journal June 2006
Probing the γ − α Transition in Bulk Ce under Pressure: A Direct Investigation by Resonant Inelastic X-Ray Scattering journal June 2006
Inelastic x-ray scattering by electronic excitations under high pressure journal March 2010
First-Principles Study of Elastic, Structural, Electronic, Thermodynamical, and Optical Properties of Yttria (Y 2 O 3 ) Ceramic in Cubic Phase journal March 2013
High-Flux Solar-Driven Thermochemical Dissociation of CO2 and H2O Using Nonstoichiometric Ceria journal December 2010
Theory of XPS and BIS Spectra in Ce 2 O 3 and CeO 2 journal June 1987
Theory of the 4d→ 2p X-Ray Emission Spectroscopy in Ce 2 O 3 , Pr 2 O 3 and Dy 2 O 3 journal June 1995
Tribological behaviour of steel backed Al–Sn strip prepared via spray atomisation–deposition–rolling route journal January 2007
Core Level Spectroscopy of Solids book January 2008
Different routes to pressure-induced volume collapse transitions in gadolinium and terbium metals text January 2013

Cited By (9)

Synthesis of clathrate cerium superhydride CeH9 at 80-100 GPa with atomic hydrogen sublattice journal October 2019
Pressure-induced tuning of lattice distortion in a high-entropy oxide journal September 2019
Anomalous compression behaviour in Nd 2 O 3 studied by x-ray diffraction and Raman spectroscopy journal February 2018
High-pressure studies with x-rays using diamond anvil cells journal November 2016
Pressure Effects on the 4 f Electronic Structure of Light Lanthanides journal February 2019
Defect engineering by synchrotron radiation X-rays in CeO 2 nanocrystals journal August 2018
Defect engineering by synchrotron radiation X-rays in CeO 2 nanocrystals text January 2018
Pressure-Induced Phase Transitions in Sesquioxides journal November 2019
Pressure-induced tuning of lattice distortion in a high-entropy oxide text January 2019

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