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|Title:||Experimental and ab Initio Volume Compressibility Curves of NpCoGa5|
|Authors:||HEATHMAN Stephen; HEINES P.; SURBLE SUZY; GRIVEAU Jean-Christophe; MAGNANI Nicola; CACIUFFO Roberto; ELGAZZAR S.; OPPENEER P. M.|
|Citation:||PHYSICAL REVIEW B vol. 81 p. 02416(1-5)|
|Publisher:||AMER PHYSICAL SOC|
|JRC Publication N°:||JRC55226|
|Type:||Articles in Journals|
|Abstract:||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.|
|JRC Institute:||Institute for Transuranium Elements|
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