Pressure- and Temperature-Dependent X-Ray Diffraction Studies of NdCrO₃

Author(s)

Michael W. Lufaso, University of South Carolina - Columbia
Samuel J. Mugavero III, University of South Carolina - Columbia
William R. Gemmill, University of South Carolina - Columbia
Yongjae Lee, Yonsei University
Thomas Vogt, University of South Carolina - Columbia
Hans-Conrad zur Loye, University of South Carolina - ColumbiaFollow

Document Type

Paper

Subject Area(s)

Chemistry

Abstract

High-temperature and high-pressure X-ray diffraction experiments were conducted on the perovskite NdCrO₃. High-temperature measurements were used to investigate the temperature dependence of the crystal structure up to 823 K. The magnitude of the octahedral tilting distortion decreased with an increase in temperature. The pressure dependence of the lattice parameters up to 6.4(2) GPa were determined using a diamond anvil cell and monochromatic synchrotron X-ray diffraction. The a lattice parameters exhibit an unusual elongation with pressure, but there was no indication of a pressure-induced phase transition in the pressure range examined and a least squares fit to the volume–pressure data with a second-order Birch–Murnagahan equation of state yielded a large bulk modulus of 338(20) GPa, making it one of the least compressible perovskite oxides.

Digital Object Identifier (DOI)

https://doi.org/10.1016/j.jallcom.2006.06.064

Publication Info

Published in Journal of Alloys and Compounds, Volume 433, Issue 1-2, 2006, pages 91-96.

Rights

© Journal of Alloys and Compounds 2006, Elsevier.

APA Citation

Lufaso, M., Mugavero, S., Gemmill, W., Lee, Y., Vogt, T., & zur Loye, H.-C. (2006). Pressure- and Temperature-Dependent X-Ray Diffraction Studies of NdCrO₃. Journal of Alloys and Compounds, 433(1–2), 91–96. https://doi.org/10.1016/j.jallcom.2006.06.064