Forthcoming article in Acta Crystallographica Section A Foundations and Advances
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Acta Crystallographica Section A: Foundations and Advances covers theoretical and fundamental aspects of the structure of matter. The journal is the prime forum for research in diffraction physics and the theory of crystallographic structure determination by diffraction methods using X-rays, neutrons and electrons. The structures include periodic and aperiodic crystals, and non-periodic disordered materials, and the corresponding Bragg, satellite and diffuse scattering, thermal motion and symmetry aspects. Spatial resolutions range from the subatomic domain in charge-density studies to nanodimensional imperfections such as dislocations and twin walls. The chemistry encompasses metals, alloys, and inorganic, organic and biological materials. Structure prediction and properties such as the theory of phase transformations are also covered.en-gbCopyright (c) 2022 International Union of CrystallographyInternational Union of CrystallographyInternational Union of Crystallographyhttps://journals.iucr.orgurn:issn:0108-7673Acta Crystallographica Section A: Foundations and Advances covers theoretical and fundamental aspects of the structure of matter. The journal is the prime forum for research in diffraction physics and the theory of crystallographic structure determination by diffraction methods using X-rays, neutrons and electrons. The structures include periodic and aperiodic crystals, and non-periodic disordered materials, and the corresponding Bragg, satellite and diffuse scattering, thermal motion and symmetry aspects. Spatial resolutions range from the subatomic domain in charge-density studies to nanodimensional imperfections such as dislocations and twin walls. The chemistry encompasses metals, alloys, and inorganic, organic and biological materials. Structure prediction and properties such as the theory of phase transformations are also covered.text/htmlActa Crystallographica Section A Foundations and Advancestextdaily12002-01-01T00:00+00:00med@iucr.orgActa Crystallographica Section A Foundations and AdvancesCopyright (c) 2022 International Union of Crystallographyurn:issn:0108-7673Forthcoming article in Acta Crystallographica Section A Foundations and Advanceshttp://journals.iucr.org/logos/rss10a.gif
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Still imageThe intrinsic group–subgroup structures of the Diamond and Gyroid minimal surfaces in their conventional unit cells
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The group–subgroup structure of the symmetry groups describing the Diamond and Gyroid minimal surfaces in their conventional unit cells is presented.Copyright (c) 2021 International Union of Crystallographyurn:issn:2053-2733Martin Cramer Pedersen et al.doi:10.1107/S2053273321012936International Union of CrystallographyThe group–subgroup structure of the symmetry groups describing the Diamond and Gyroid minimal surfaces in their conventional unit cells is presented.enMINIMAL SURFACES; HYPERBOLIC GEOMETRY; SYMMETRY GROUPS; SUBGROUP LATTICES; CONVENTIONAL UNIT CELLSThe group–subgroup structure of the symmetry groups describing the Diamond and Gyroid minimal surfaces in their conventional unit cells is presented.text/htmlThe intrinsic group–subgroup structures of the Diamond and Gyroid minimal surfaces in their conventional unit cellstextOn the frequency module of the hull of a primitive substitution tiling
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As part of the study of aperiodic tilings and tiling spaces, the frequency module of the hull of a primitive substitution tiling is computed.Copyright (c) 2021 International Union of Crystallographyurn:issn:2053-2733April Lynne D. Say-awen et al.doi:10.1107/S2053273321012572International Union of CrystallographyAs part of the study of aperiodic tilings and tiling spaces, the frequency module of the hull of a primitive substitution tiling is computed.enFREQUENCY MODULE; PRIMITIVE SUBSTITUTION TILINGS; APERIODIC TILINGS; QUASICRYSTALSAs part of the study of aperiodic tilings and tiling spaces, the frequency module of the hull of a primitive substitution tiling is computed.text/htmlOn the frequency module of the hull of a primitive substitution tilingtextNumerical Problems in Crystallography. By M. A. Wahab. Springer, 2021. Hardcover, pp. xv + 387. ISBN 9789811597534. Price EUR 83.19.
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Copyright (c) 2021 International Union of Crystallographyurn:issn:2053-2733Massimo Nespolodoi:10.1107/S2053273321012468International Union of CrystallographyenBOOK REVIEW; CRYSTALLOGRAPHIC COMPUTINGtext/htmlNumerical Problems in Crystallography. By M. A. Wahab. Springer, 2021. Hardcover, pp. xv + 387. ISBN 9789811597534. Price EUR 83.19.textChiral spiral cyclic twins
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Two-dimensional point patterns for cyclic twins of six-, eight-, ten- and 12-fold symmetry are generated based on a general parametrization in combination with specific integer sequences following from a common construction scheme.Copyright (c) 2021 International Union of Crystallographyurn:issn:2053-2733Wolfgang Hornfeckdoi:10.1107/S2053273321012237International Union of CrystallographyTwo-dimensional point patterns for cyclic twins of six-, eight-, ten- and 12-fold symmetry are generated based on a general parametrization in combination with specific integer sequences following from a common construction scheme.enCHIRAL; SPIRAL; CYCLIC TWINSTwo-dimensional point patterns for cyclic twins of six-, eight-, ten- and 12-fold symmetry are generated based on a general parametrization in combination with specific integer sequences following from a common construction scheme.text/htmlChiral spiral cyclic twinstextEffects of Voigt diffraction peak profiles on the pair distribution function
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General expressions for peak broadening in reciprocal and direct space are derived based on the Voigt function.Copyright (c) 2021 International Union of Crystallographyurn:issn:2053-2733Jonas Beyer et al.doi:10.1107/S2053273321011840International Union of CrystallographyGeneral expressions for peak broadening in reciprocal and direct space are derived based on the Voigt function.enPAIR DISTRIBUTION FUNCTION; PEAK PROFILE; VOIGT FUNCTION; STRAIN EFFECTS; SIZE EFFECTSGeneral expressions for peak broadening in reciprocal and direct space are derived based on the Voigt function.text/htmlEffects of Voigt diffraction peak profiles on the pair distribution functiontextA new method for lattice reduction using directional and hyperplanar shearing
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A new algorithm for lattice reduction based on a series of directional and hyperplanar shears and driven by the decrease of the basis rhombicity is proposed. It can be used to reduce unit cells in dimension 3 and higher.Copyright (c) 2021 International Union of Crystallographyurn:issn:2053-2733Cyril Cayrondoi:10.1107/S2053273321011037International Union of CrystallographyA new algorithm for lattice reduction based on a series of directional and hyperplanar shears and driven by the decrease of the basis rhombicity is proposed. It can be used to reduce unit cells in dimension 3 and higher.enLATTICE REDUCTION; HYPERPLANE; LEFT INVERSE; ALGORITHMA new algorithm for lattice reduction based on a series of directional and hyperplanar shears and driven by the decrease of the basis rhombicity is proposed. It can be used to reduce unit cells in dimension 3 and higher.text/htmlA new method for lattice reduction using directional and hyperplanar shearingtext