Structural properties of the sesquicarbide superconductorLa2C3at high pressure

2005/03/24 by X. Wang, I. Loa, K. Syassen +8 · 1 citation
Chemistry · Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #Analytical Chemistry (journal) #Boron and Carbon Nanomaterials Research #Chemistry #Crystallography #Diamond anvil cell #Diffraction #Equation of state #High pressure #High-pressure geophysics and materials #Impurity #Inorganic chemistry #Lanthanum #Materials science #Optics #Phase (matter) #Physics #Powder diffraction #Rare-earth and actinide compounds #Thermodynamics #Volume (thermodynamics) #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.72.064520

5 pages, 6 figures

arxiv created 2005/03/24 · openalex publication_date 2005/08/24 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The effect of pressure on the structural properties of lanthanum sesquicarbide La₂C₃ (T_c=13\phantom\rule0.3em0exK) has been investigated at room temperature by angle-dispersive powder x-ray diffraction in a diamond anvil cell. The compound remains in the cubic Pu₂C₃-type structure at pressures up to at least 30 GPa. The corresponding equation of state parameters are reported and discussed in terms of phase stability of La₂C₃. Pressure-volume data of the impurity phase LaC₂ are reported also for pressures up to 13 GPa.

Citations

• Calibration of the ruby pressure gauge to 800 kbar under quasi‐hydrostatic conditions
• Finite strain isotherm and velocities for single‐crystal and polycrystalline NaCl at high pressures and 300°K
• EXPGUI, a graphical user interface forGSAS

Cited by

• Lanthanide [wikipedia]