dc.date.accessioned | 2020-11-17T19:54:29Z | |
dc.date.available | 2020-11-17T19:54:29Z | |
dc.date.created | 2020-01-21T14:17:34Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Mondal, SK Das, Pratik Kumar Mandal, N Arya, A . A novel approach to the structural distortions of U/Th snub-disphenoids and their control on zircon → reidite type phase transitions of U1−xThxSiO4. Journal of Physics: Condensed Matter. 2020, 32(14) | |
dc.identifier.uri | http://hdl.handle.net/10852/81068 | |
dc.description.abstract | Coffinite (USiO4) and thorite (ThSiO4) are conspicuous radiogenic silicates in the geonomy. They form U1−xThxSiO4 (uranothorite) solid solutions in zircon-type phase. Investigating the phase-evolution of these minerals is of utmost significance in realizing their applicability in the front-as well as at the back-end of nuclear industries. We carried out a systematic study of zircon- to reidite-type (tetragonal I41/amd to I41/a) structural transitions of U1−xThxSiO4 solid solution, and investigated their mechanical behaviour. We found a unique behaviour of transition pressure with the change in U-Th concentration in the solid solution. The phase transition pressure (p t) is found to be minimum for x = 0.5. We develop the necessary formalism and present an efficient method to estimate the longitudinal and angular distortions of U/ThO8-triangular dodecahedra (snub-disphenoids). We have parameterized two new factors: δ (longitudinal distortions) and σ2 (angular distortions) to quantify the polyhedral distortions. A detailed analysis of U/ThO8 snub-disphenoidal distortions is presented to address such variation of p t with U and Th concentration. We argue that our approach is independent of polyhedral volume and can be used for any AB8 (A: cation, B: anion) type snub-disphenoidal system. | |
dc.language | EN | |
dc.rights | Attribution 3.0 Unported | |
dc.rights.uri | https://creativecommons.org/licenses/by/3.0/ | |
dc.title | A novel approach to the structural distortions of U/Th snub-disphenoids and their control on zircon → reidite type phase transitions of U1−xThxSiO4 | |
dc.type | Journal article | |
dc.creator.author | Mondal, SK | |
dc.creator.author | Das, Pratik Kumar | |
dc.creator.author | Mandal, N | |
dc.creator.author | Arya, A | |
cristin.unitcode | 185,15,22,40 | |
cristin.unitname | Senter for Jordens utvikling og dynamikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |
dc.identifier.cristin | 1779281 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Physics: Condensed Matter&rft.volume=32&rft.spage=&rft.date=2020 | |
dc.identifier.jtitle | Journal of Physics: Condensed Matter | |
dc.identifier.volume | 32 | |
dc.identifier.issue | 14 | |
dc.identifier.pagecount | 11 | |
dc.identifier.doi | https://doi.org/10.1088/1361-648X/ab60e4 | |
dc.identifier.urn | URN:NBN:no-84158 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 0953-8984 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/81068/2/mondal.pdf | |
dc.type.version | PublishedVersion | |
cristin.articleid | 145401 | |