Zobrazeno 1 - 10 of 23 pro vyhledávání: '"James Cumby"'
1
Akademický článek
Co-emergence of magnetic order and structural fluctuations in magnetite
Autor: Giuditta Perversi, Elise Pachoud, James Cumby, Jessica M. Hudspeth, Jon P. Wright, Simon A. J. Kimber, J. Paul Attfield
Publikováno v: Nature Communications, Vol 10, Iss 1, Pp 1-6 (2019)
The Verwey transition in magnetite was reported 80 years ago but identifying the underlying mechanism has been difficult. Here the authors show that structural distortions associated with the Verwey transition emerge as local fluctuations at the Curi
Externí odkaz: https://doaj.org/article/4b53c26b1bcb42e1b9f2ad85fd2dd6ff
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2
Akademický článek
Long range electronic phase separation in CaFe3O5
Autor: Ka. H. Hong, Angel M. Arevalo-Lopez, James Cumby, Clemens Ritter, J. Paul Attfield
Publikováno v: Nature Communications, Vol 9, Iss 1, Pp 1-6 (2018)
Electronic phase separation is an important feature of many correlated perovskite compounds but hasn’t been seen in other complex oxides with similar physical behaviour such as magnetite. Hong et al. find phase separation between a magnetite-like c
Externí odkaz: https://doaj.org/article/65f4cb6a21104128bfe704e6489fef2a
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3
Akademický článek
Ellipsoidal analysis of coordination polyhedra
Autor: James Cumby, J. Paul Attfield
Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-8 (2017)
Simple polyhedra in crystalline compounds are often deformed, so methods for analysing their distortions are useful. Here, the authors demonstrate that analysis of the minimum bounding ellipsoid of a coordination polyhedron provides a general method
Externí odkaz: https://doaj.org/article/aa8e06031fee41f3a09da3761e6fee91
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4
Akademický článek
Author Correction: Long range electronic phase separation in CaFe3O5
Autor: Ka. H. Hong, Angel M. Arevalo-Lopez, James Cumby, Clemens Ritter, J. Paul Attfield
Publikováno v: Nature Communications, Vol 9, Iss 1, Pp 1-1 (2018)
The original version of this Article contained an error in the third sentence of the legend of Fig. 2, which incorrectly read ‘The phase fractions of the charge ordered (CO) phase, obtained from synchrotron (X) and neutron (N) diffraction data are
Externí odkaz: https://doaj.org/article/4b1291c3943c4dabba402919bcfdf1d4
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5
Grouped representation of interatomic distances as a similarity measure for crystal structures
Autor: Rui-Zhi Zhang, Sohan Seth, James Cumby
Publikováno v: Zhang, R, Seth, S & Cumby, J 2022, ' Grouped representation of interatomic distances as a similarity measure for crystal structures ', Digital Discovery . https://doi.org/10.1039/D2DD00054G
Determining how similar two materials are in terms of both atomic composition and crystallographic structure remains a challenge, the solution of which would enable generalised machine learning using crystal structure data. We demonstrate a new metho
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6358ba193f856634e79e5bec572b735f
https://doi.org/10.1039/d2dd00054g
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7
Electronic origin of negative thermal expansion in V2OPO4
Autor: James Cumby, Jonathan P. Wright, Robert Glaum, Elise Pachoud, Branimir Raguž, Paul Attfield
Publikováno v: 'Chemical Communications ', vol: 56, pages: 6523-6526 (2020)
Pachoud, E, Cumby, J, Wright, J P, Raguž, B, Glaum, R & Attfield, P 2020, ' Electronic origin of negative thermal expansion in V2OPO4 ', Chemical Communications . https://doi.org/10.1039/D0CC01920H
Negative volume expansion between 620 and 800 K in V(2)OPO(4)is discovered to be of electronic origin due to the charge ordering transition at 605 K. Domain reorientation and coexistence of the low and high temperature phases close to the transition
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad397a11ad0e896e1558a5f4fe4407a5
https://epn-library.esrf.fr/flora/jsp/index_view_direct_anonymous.jsp?record=doc:PUB_ESRF:55621
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8
Co-emergence of magnetic order and structural fluctuations in magnetite
Autor: J. Paul Attfield, Simon A. J. Kimber, Giuditta Perversi, Elise Pachoud, James Cumby, Jessica M. Hudspeth, Jonathan P. Wright
Publikováno v: Nature Communications, Vol 10, Iss 1, Pp 1-6 (2019)
Nature Communications
Perversi, G, Pachoud, E, Cumby, J, Hudspeth, J M, Wright, J P, Kimber, S A J & Paul Attfield, J 2019, ' Co-emergence of magnetic order and structural fluctuations in magnetite ', Nature Communications, vol. 10, 2587 . https://doi.org/10.1038/s41467-019-10949-9
'Nature Communications ', vol: 10, pages: 2857-1-2857-6 (2019)
The nature of the Verwey transition occurring at TV ≈ 125 K in magnetite (Fe3O4) has been an outstanding problem over many decades. A complex low temperature electronic order was recently discovered and associated structural fluctuations persisting
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6baddf22729f16acd6cef17025f6c7c5
https://doaj.org/article/4b53c26b1bcb42e1b9f2ad85fd2dd6ff
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10
Representations and descriptors unifying the study of molecular and bulk systems
Autor: James Cumby, Kevin Rossi
Publikováno v: Rossi, K & Cumby, J 2019, ' Representations and descriptors unifying the study of molecular and bulk systems ', International journal of quantum chemistry . https://doi.org/10.1002/qua.26151
Establishing a unified framework for describing the structures of molecular and periodic systems is a long-standing challenge in physics, chemistry, and material science. With the rise of machine learning methods in these fields, there is a growing n
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1135d27d29322151de8c920a4f561a2
https://hdl.handle.net/20.500.11820/63d55ab7-4304-46a0-9a37-e22efd715ed3
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