Matches in SemOpenAlex for { <https://semopenalex.org/work/W2005935304> ?p ?o ?g. }
- W2005935304 endingPage "241" @default.
- W2005935304 startingPage "229" @default.
- W2005935304 abstract "Solid solutions among zircon (ZrSiO4, I41/amd) and zircon-structured orthosilicates ASiO4 (A = Hf, Th, U, Pu, or Ce) are important to a wide variety of applications: nuclear materials, geochronology, and even electronic materials. The thermodynamic mixing properties of the following seven binary solid solutions were simulated using density functional theory followed by Monte Carlo modeling and thermodynamic integration: (Zr,Hf)SiO4, (Zr,Th)SiO4, (Zr,U)SiO4, (Zr,Pu)SiO4, (Zr,Ce)SiO4, (Hf,Pu) SiO4, and (Th,U)SiO4. ZrSiO4 and HfSiO4 were found to form a nearly ideal solid solution, but the miscibility of the other solid solutions was limited to no more than 12 mol% of the substituting cation. The binaries were ranked by extent of miscibility: (Zr,Hf)SiO4 > (Th,U)SiO4 > (Zr,Pu)SiO4 > (Zr,Ce) SiO4 > (Hf,Pu)SiO4 > (Zr,U)SiO4 > (Zr,Th)SiO4. The extent of solid solution has been estimated for each binary. The end-members PuSiO4, CeSiO4, and USiO4 were determined to be unstable relative to a mixture of SiO2(quartz) and crystalline PuO2, CeO2(cerianite), or UO2(uraninite). Isostructural thorite (ThSiO4) is calculated to be marginally stable, but its monoclinic polymorph, huttonite, which has the structure of monazite, is marginally unstable relative to SiO2(quartz) and ThO2(thorianite) at 0 K. If thermodynamic equilibrium could be reached at low temperatures, exsolution textures would appear in most zircon solid solutions perpendicular to [001], but perpendicular to a linear combination of [100] and [010] in (Hf,Pu)SiO4." @default.
- W2005935304 created "2016-06-24" @default.
- W2005935304 creator A5038323009 @default.
- W2005935304 creator A5064667746 @default.
- W2005935304 creator A5067479604 @default.
- W2005935304 date "2010-02-01" @default.
- W2005935304 modified "2023-09-28" @default.
- W2005935304 title "Simulation of thermodynamic mixing properties of actinide-containing zircon solid solutions" @default.
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