The structural response of gadolinium phosphate to pressure
Abstract
In this study, accurate elastic constants for gadolinium phosphate (GdPO4) have been measured by single-crystal high-pressure diffraction methods. The bulk modulus of GdPO4 determined under hydrostatic conditions, 128.1(8) GPa (K'=5.8(2)), is markedly different from that obtained with GdPO4 under non-hydrostatic conditions (160(2) GPa), which indicates the importance of shear stresses on the elastic response of this phosphate. Finally, high pressure Raman and diffraction analysis indicate that the PO4 tetrahedra behave as rigid units in response to pressure and that contraction of the GdPO4 structure is facilitated by bending/twisting of the Gd–O–P links that result in increased distortion in the GdO9 polyhedra.
- Authors:
-
- Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States). Dept. of Geosciences
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- OSTI Identifier:
- 1261304
- Alternate Identifier(s):
- OSTI ID: 1436186
- Grant/Contract Number:
- AC05-00OR22725; EAR-1118691
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Solid State Chemistry
- Additional Journal Information:
- Journal Volume: 241; Journal ID: ISSN 0022-4596
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Heffernan, Karina M., Ross, Nancy L., Spencer, Elinor C., and Boatner, Lynn A. The structural response of gadolinium phosphate to pressure. United States: N. p., 2016.
Web. doi:10.1016/j.jssc.2016.06.009.
Heffernan, Karina M., Ross, Nancy L., Spencer, Elinor C., & Boatner, Lynn A. The structural response of gadolinium phosphate to pressure. United States. https://doi.org/10.1016/j.jssc.2016.06.009
Heffernan, Karina M., Ross, Nancy L., Spencer, Elinor C., and Boatner, Lynn A. Thu .
"The structural response of gadolinium phosphate to pressure". United States. https://doi.org/10.1016/j.jssc.2016.06.009. https://www.osti.gov/servlets/purl/1261304.
@article{osti_1261304,
title = {The structural response of gadolinium phosphate to pressure},
author = {Heffernan, Karina M. and Ross, Nancy L. and Spencer, Elinor C. and Boatner, Lynn A.},
abstractNote = {In this study, accurate elastic constants for gadolinium phosphate (GdPO4) have been measured by single-crystal high-pressure diffraction methods. The bulk modulus of GdPO4 determined under hydrostatic conditions, 128.1(8) GPa (K'=5.8(2)), is markedly different from that obtained with GdPO4 under non-hydrostatic conditions (160(2) GPa), which indicates the importance of shear stresses on the elastic response of this phosphate. Finally, high pressure Raman and diffraction analysis indicate that the PO4 tetrahedra behave as rigid units in response to pressure and that contraction of the GdPO4 structure is facilitated by bending/twisting of the Gd–O–P links that result in increased distortion in the GdO9 polyhedra.},
doi = {10.1016/j.jssc.2016.06.009},
journal = {Journal of Solid State Chemistry},
number = ,
volume = 241,
place = {United States},
year = {Thu Jun 16 00:00:00 EDT 2016},
month = {Thu Jun 16 00:00:00 EDT 2016}
}
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Works referencing / citing this record:
High-pressure structural and vibrational properties of monazite-type BiPO 4 , LaPO 4 , CePO 4 , and PrPO 4
journal, January 2018
- Errandonea, D.; Gomis, O.; Rodríguez-Hernández, P.
- Journal of Physics: Condensed Matter, Vol. 30, Issue 6
High-Pressure Elastic, Vibrational and Structural Study of Monazite-Type GdPO4 from Ab Initio Simulations
journal, May 2018
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