Structural properties of the sesquicarbide superconductor La2C3 at high pressure

X. Wang; I. Loa; K. Syassen; R. K. Kremer; A. Simon; M. Hanfland; K. Ahn

doi:10.1103/PhysRevB.72.064520

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Structural properties of the sesquicarbide superconductor La2C3 at high pressure

X. Wang, I. Loa, K. Syassen, R. K. Kremer, A. Simon, M. Hanfland, K. Ahn

DOI 10.1103/PhysRevB.72.064520 · Physical Review B

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Abstract

The effect of pressure on the structural properties of lanthanum sesquicarbide La2C3 (Tc=13K) 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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La2C3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	13.5	Pressure unresolved	onset
La2C3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	13.5	Pressure unresolved	onset
La2C3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	13.5	Pressure unresolved	unknown
Y2C3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	18	Pressure not reported	unknown