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Experimental and ab initio volume compressibility curves of NpCoGa5
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2010 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 81, no 2, 024106- p.Article in journal (Refereed) Published
Abstract [en]

We report the results of high-pressure, angular-dispersive, x-ray diffraction measurements performed on NpCoGa5, a magnetic isostructural analog 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 B-0=130 GPa and B-0'=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.

Place, publisher, year, edition, pages
2010. Vol. 81, no 2, 024106- p.
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Natural Sciences
URN: urn:nbn:se:uu:diva-137393DOI: 10.1103/PhysRevB.81.024106ISI: 000274002100033OAI: oai:DiVA.org:uu-137393DiVA: diva2:378808
Available from: 2010-12-16 Created: 2010-12-15 Last updated: 2012-03-26Bibliographically approved

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Oppeneer, Peter M
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Materials Theory
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