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- Heathman, S, et al.
(author)
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Experimental and ab initio volume compressibility curves of NpCoGa5
- 2010
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In: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 81:2, s. 024106-
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Journal article (peer-reviewed)abstract
- 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.
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