Magnetostructural transition in Gd5Sb0.5Ge3.5 Lograsso, Thomas Chernyshov, A. Schlagel, Deborah Mudryk, Yaroslav Paudyal, Durga Pecharsky, Vitalij Gschneidner, Karl Schlagel, Deborah Lograsso, Thomas
dc.contributor.department Ames Laboratory 2018-02-13T14:29:59.000 2020-06-29T23:27:51Z 2020-06-29T23:27:51Z Thu Jan 01 00:00:00 UTC 2009 2013-09-21 2009-11-17
dc.description.abstract <p>Magnetic and crystallographic properties of Gd<sub>5</sub>Sb<sub>0.5</sub>Ge<sub>3.5</sub> were investigated using dc magnetization, ac magnetic susceptibility, and heat capacity of an oriented single crystal, combined with temperature and magnetic field dependent x-ray powder diffraction. The compound undergoes an unusual magnetostructural transition at 40 K and a nonmagnetic second-order transition around 63 K. The detailed crystallographic study of Gd<sub>5</sub>Sb<sub>0.5</sub>Ge<sub>3.5</sub> shows that contrary to the R<sub>5</sub>(Si<sub>x</sub>Ge<sub>1−x</sub>)<sub>4</sub> systems (R is a rare-earth metal), the structural transition occurs without shear displacements of the <sub>∞</sub>2[R<sub>5</sub>T<sub>4</sub>] slabs (T=Si, Ge, and Sb), and a substantial volume change (−0.5%) does not lead to a change in crystallographic symmetry. The first-principles electronic structure calculations show higher interslab than intraslab ferromagnetic exchange interaction indicating that Sm<sub>5</sub>Ge<sub>4</sub> type of structure supports a ferromagnetic ground state in Gd<sub>5</sub>Sb<sub>0.5</sub>Ge<sub>3.5</sub>.</p>
dc.description.comments <p>This article is from <em>Physical Review B</em> 80, no. 18 (2009): 184416, doi:<a href="" target="_blank">10.1103/PhysRevB.80.184416</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/
dc.identifier.articleid 1057
dc.identifier.contextkey 4611578
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ameslab_pubs/67
dc.language.iso en
dc.source.bitstream archive/|||Sat Jan 15 01:26:43 UTC 2022
dc.source.uri 10.1103/PhysRevB.80.184416
dc.subject.disciplines Condensed Matter Physics
dc.subject.disciplines Metallurgy
dc.subject.keywords Materials Science and Engineering
dc.title Magnetostructural transition in Gd5Sb0.5Ge3.5
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 316ee29f-99a9-49bc-a048-0f43caf97aa5
relation.isAuthorOfPublication 220ce8a4-546b-4118-8d44-911799a0ffa1
relation.isOrgUnitOfPublication 25913818-6714-4be5-89a6-f70c8facdf7e
Original bundle
Now showing 1 - 1 of 1
546.13 KB
Adobe Portable Document Format