{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1364233270807826432.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1126/science.1149606"}},{"identifier":{"@type":"URI","@value":"https://www.science.org/doi/pdf/10.1126/science.1149606"}}],"dc:title":[{"@value":"Elasticity of (Mg,Fe)O Through the Spin Transition of Iron in the Lower Mantle"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>\n            Changes in the electronic configuration of iron at high pressures toward a spin-paired state within host minerals ferropericlase and silicate perovskite may directly influence the seismic velocity structure of Earth's lower mantle. We measured the complete elastic tensor of ferropericlase, (Mg\n            <jats:sub>\n              1–\n              <jats:italic>x</jats:italic>\n            </jats:sub>\n            ,Fe\n            <jats:sub>\n              <jats:italic>x</jats:italic>\n            </jats:sub>\n            )O (\n            <jats:italic>x</jats:italic>\n            = 0.06), through the spin transition of iron, whereupon the elastic moduli exhibited up to 25% softening over an extended pressure range from 40 to 60 gigapascals. These results are fully consistent with a simple thermodynamic description of the transition. Examination of previous compression data shows that the magnitude of softening increases with iron content up to at least\n            <jats:italic>x</jats:italic>\n            = 0.20. Although the spin transition in (Mg,Fe)O is too broad to produce an abrupt seismic discontinuity in the lower mantle, the transition will produce a correlated negative anomaly for both compressional and shear velocities that extends throughout most, if not all, of the lower mantle.\n          </jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380004233419327755","@type":"Researcher","foaf:name":[{"@value":"J. C. Crowhurst"}],"jpcoar:affiliationName":[{"@value":"Chemistry, Materials, and Life Sciences Directorate, Lawrence Livermore National Laboratory (LLNL), Livermore, CA 94550, USA."},{"@value":"Earth and Space Sciences, University of Washington, Seattle, WA 98195, USA."},{"@value":"Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA."},{"@value":"Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL 60208, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1384233270807826560","@type":"Researcher","foaf:name":[{"@value":"J. M. Brown"}],"jpcoar:affiliationName":[{"@value":"Chemistry, Materials, and Life Sciences Directorate, Lawrence Livermore National Laboratory (LLNL), Livermore, CA 94550, USA."},{"@value":"Earth and Space Sciences, University of Washington, Seattle, WA 98195, USA."},{"@value":"Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA."},{"@value":"Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL 60208, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1384233270807826434","@type":"Researcher","foaf:name":[{"@value":"A. F. Goncharov"}],"jpcoar:affiliationName":[{"@value":"Chemistry, Materials, and Life Sciences Directorate, Lawrence Livermore National Laboratory (LLNL), Livermore, CA 94550, USA."},{"@value":"Earth and Space Sciences, University of Washington, Seattle, WA 98195, USA."},{"@value":"Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA."},{"@value":"Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL 60208, USA."}]},{"@id":"https://cir.nii.ac.jp/crid/1384233270807826433","@type":"Researcher","foaf:name":[{"@value":"S. D. Jacobsen"}],"jpcoar:affiliationName":[{"@value":"Chemistry, Materials, and Life Sciences Directorate, Lawrence Livermore National Laboratory (LLNL), Livermore, CA 94550, USA."},{"@value":"Earth and Space Sciences, University of Washington, Seattle, WA 98195, USA."},{"@value":"Geophysical Laboratory, Carnegie Institution of Washington, Washington, DC 20015, USA."},{"@value":"Department of Earth and Planetary Sciences, Northwestern University, Evanston, IL 60208, USA."}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00368075"},{"@type":"EISSN","@value":"10959203"}],"prism:publicationName":[{"@value":"Science"}],"dc:publisher":[{"@value":"American Association for the Advancement of Science (AAAS)"}],"prism:publicationDate":"2008-01-25","prism:volume":"319","prism:number":"5862","prism:startingPage":"451","prism:endingPage":"453"},"reviewed":"false","url":[{"@id":"https://www.science.org/doi/pdf/10.1126/science.1149606"}],"createdAt":"2008-01-24","modifiedAt":"2024-01-10","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360004231198522752","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Pressure-induced structural evolution of pyrite-type SiO2"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004233419327616","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"A perovskitic lower mantle inferred from high-pressure, high-temperature sound velocity data"}]},{"@id":"https://cir.nii.ac.jp/crid/1360025431090017920","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Electrical conductivity of siderite and the effect of the spin transition of iron"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285704780510080","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Effects of the Fe<sup>3+</sup> spin transition on the equation of state of bridgmanite"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285709402330752","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Pressure dependence of transverse acoustic phonon energy in ferropericlase across the spin transition"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285709966782720","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Critical behavior of \n<mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"><mml:mrow><mml:mi mathvariant=\"normal\">M</mml:mi><mml:msub><mml:mi mathvariant=\"normal\">g</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>–</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:mi mathvariant=\"normal\">F</mml:mi><mml:msub><mml:mi mathvariant=\"normal\">e</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:mi mathvariant=\"normal\">O</mml:mi></mml:mrow></mml:math>\n at the pressure-induced iron spin-state crossover"}]},{"@id":"https://cir.nii.ac.jp/crid/1360565166067182592","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Elasticity of subducted basaltic crust at the lower mantle pressures: Insights on the nature of deep mantle heterogeneity"}]},{"@id":"https://cir.nii.ac.jp/crid/1360565166067210624","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Post-stishovite transition in hydrous aluminous SiO2"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848658220612992","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Lattice dynamics calculations for ferropericlase with internally consistent LDA+<i>U</i> method"}]},{"@id":"https://cir.nii.ac.jp/crid/1360849946243345536","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Ab Initio Study on the Lower Mantle Minerals"}]},{"@id":"https://cir.nii.ac.jp/crid/1361975287127806336","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Thermoelastic properties of ice VII and its high-pressure polymorphs: Implications for dynamics of cold slab subduction in the lower mantle"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204303004160","@type":"Article","resourceType":"学術雑誌論文(journal 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