Title: Experimental and ab Initio Volume Compressibility Curves of NpCoGa5
Authors: HEATHMAN StephenHEINES P.SURBLE SUZYGRIVEAU Jean-ChristopheMAGNANI NicolaCACIUFFO RobertoELGAZZAR S.OPPENEER P. M.
Citation: PHYSICAL REVIEW B vol. 81 p. 02416(1-5)
Publisher: AMER PHYSICAL SOC
Publication Year: 2010
JRC Publication N°: JRC55226
ISSN: 1098-0121
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC55226
DOI: 10.1103/PhysRevB.81.024106
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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