Experimental and ab Initio Volume Compressibility Curves of NpCoGa5
We report the results of high-pressure, angular-dispersive, X-ray diffraction measurements performed on NpCoGa5, a magnetic isostructural analogue of the PuCoGa5 superconductor. No crystallographic transitions or discontinuous volume collapses have been observed by increasing pressure p up to 39 GPa. A fit to the Birch-Murnaghan equation of state gives values of the isothermal bulk
modulus and its pressure derivative B0 = 130 GPa and B0' = 4.8, respectively. The volume compressibility curve is in excellent agreement with the results of ab initio fully-relativistic, full potential local spin-density functional calculations. A comparison to experimental and ab initio calculated compressibility data of PuCoGa5 and PuRhGa5 is also made.
HEATHMAN Stephen;
HEINES P.;
SURBLE Suzy;
GRIVEAU Jean-Christophe;
MAGNANI Nicola;
CACIUFFO Roberto;
ELGAZZAR S.;
OPPENEER P. M.;
2010-01-19
AMER PHYSICAL SOC
JRC55226
1098-0121,
https://publications.jrc.ec.europa.eu/repository/handle/JRC55226,
10.1103/PhysRevB.81.024106,
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