Pressure- and temperature-dependent X-ray diffraction studies of NdCrO3

Michael W. Lufaso, Samuel J. Mugavero, William R. Gemmill, Yongjae Lee, Thomas Vogt, Hans Conrad zur Loye

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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.

Original languageEnglish
Pages (from-to)91-96
Number of pages6
JournalJournal of Alloys and Compounds
Volume433
Issue number1-2
DOIs
Publication statusPublished - 2007 May 16

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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    Lufaso, M. W., Mugavero, S. J., Gemmill, W. R., Lee, Y., Vogt, T., & zur Loye, H. C. (2007). 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