X-ray diffraction study of HgBa2CuO4+δ at high pressures

Eduardo J. Gonzalez, Winnie Wong-Ng, Gasper J. Piermarini, Christian Wolters, Justin Schwartz

Research output: Contribution to journalArticle

Abstract

An in situ high pressure study using energy dispersive X-ray diffraction has been carried out on the polycrystalline high-Tc superconductor, HgBa2CuO4+δ (Hg-1201), to study its phase stability under pressure and also to measure its compressibility and bulk modulus. No evidence of pressure-induced polymorphism was found in the pressure range investigated, i.e., from 0.1 MPa (1 atm) to 5 GPa. The compound exhibited anisotropic elastic properties. The axial compressibility along the c axis was measured to be (3.96 ± 0.35) × 10-3 GPa-1 and along the a axis (3.42± 0.13) × 10-3 GPa-1, corresponding to an anisotropy ratio of 1.16 ± 0.11. The bulk modulus was determined to be (94.7 ± 4.2) GPa and, assuming a Poisson's ratio of 0.2, Young's modulus was estimated to be (170 ± 8) GPa.

Original languageEnglish (US)
Pages (from-to)106-112
Number of pages7
JournalPowder Diffraction
Volume12
Issue number2
StatePublished - Jun 1 1997

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bulk modulus
X ray diffraction
compressibility
Elastic moduli
Compressibility
diffraction
x rays
polymorphism
Poisson ratio
Phase stability
modulus of elasticity
elastic properties
Polymorphism
Superconducting materials
anisotropy
Anisotropy
energy

All Science Journal Classification (ASJC) codes

  • Radiation
  • Materials Science(all)
  • Instrumentation
  • Condensed Matter Physics

Cite this

Gonzalez, E. J., Wong-Ng, W., Piermarini, G. J., Wolters, C., & Schwartz, J. (1997). X-ray diffraction study of HgBa2CuO4+δ at high pressures. Powder Diffraction, 12(2), 106-112.
Gonzalez, Eduardo J. ; Wong-Ng, Winnie ; Piermarini, Gasper J. ; Wolters, Christian ; Schwartz, Justin. / X-ray diffraction study of HgBa2CuO4+δ at high pressures. In: Powder Diffraction. 1997 ; Vol. 12, No. 2. pp. 106-112.
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Gonzalez, EJ, Wong-Ng, W, Piermarini, GJ, Wolters, C & Schwartz, J 1997, 'X-ray diffraction study of HgBa2CuO4+δ at high pressures', Powder Diffraction, vol. 12, no. 2, pp. 106-112.

X-ray diffraction study of HgBa2CuO4+δ at high pressures. / Gonzalez, Eduardo J.; Wong-Ng, Winnie; Piermarini, Gasper J.; Wolters, Christian; Schwartz, Justin.

In: Powder Diffraction, Vol. 12, No. 2, 01.06.1997, p. 106-112.

Research output: Contribution to journalArticle

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Gonzalez EJ, Wong-Ng W, Piermarini GJ, Wolters C, Schwartz J. X-ray diffraction study of HgBa2CuO4+δ at high pressures. Powder Diffraction. 1997 Jun 1;12(2):106-112.