Show simple item record

dc.contributor.authorCoey, John
dc.contributor.authorHe, Yangkun
dc.contributor.authorSchaefer, Rudolf
dc.contributor.authorJiang, Chengbao
dc.date.accessioned2019-11-25T15:56:57Z
dc.date.available2019-11-25T15:56:57Z
dc.date.issued2018
dc.date.submitted2018en
dc.identifier.citationHe, Y., Coey, J.M.D., Schaefer, R. & Jiang, C., Determination of bulk domain structure and magnetization processes in bcc ferromagnetic alloys: Analysis of magnetostriction in Fe83Ga17, PHYSICAL REVIEW MATERIALS, 2, 2018, 014412en
dc.identifier.issn0163-1829
dc.identifier.otherY
dc.identifier.urihttps://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.2.014412
dc.identifier.urihttp://hdl.handle.net/2262/90871
dc.descriptionPUBLISHEDen
dc.description.abstractThe ground state of macroscopic samples of magnetically ordered materials is a domain state because of magnetostatic energy or entropy, yet we have limited experimental means for imaging the bulk domain structure and the magnetization process directly. The common methods available reveal the domains at the surface or in electron- or x-ray transparent lamellae, not those in the bulk. The magnetization curve just reflects the vector sum of the moments of all the domains in the sample, but magnetostriction curves are more informative. They are strongly influenced by the domain structure in the unmagnetized state and its evolution during the magnetization process in an applied field. Here we report a method of determining the bulk domain structure in a cubic magnetostrictive material by combining magneto-optic Kerr microscopy with magnetostriction and magnetization measurements on single crystals as a function of applied field. We analyze the magnetostriction of Fe83Ga17 crystals in terms of a domain structure that is greatly influenced by sample shape and heat treatment. Saturation magnetostriction measurements are used to determine the fraction of domains orientated along the three ⟨100⟩ axes in the initial state. Domain wall motion and rotation process have characteristic signatures in the magnetostriction curves, including those associated with the ΔE effect and domain rotation through a ⟨110⟩ auxetic direction.en
dc.format.extent014412en
dc.language.isoenen
dc.relation.ispartofseriesPHYSICAL REVIEW MATERIALS;
dc.relation.ispartofseries2;
dc.rightsYen
dc.subjectDomainsen
dc.subjectFerromagnetismen
dc.subjectMagnetostrictionen
dc.titleDetermination of bulk domain structure and magnetization processes in bcc ferromagnetic alloys: Analysis of magnetostriction in Fe83Ga17en
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jcoey
dc.identifier.rssinternalid196279
dc.identifier.doihttps://doi.org/10.1103/PhysRevMaterials.2.014412
dc.rights.ecaccessrightsopenAccess
dc.subject.TCDTagFABRICATIONen
dc.subject.TCDTagNANOSTRUCTURESen
dc.subject.TCDTagPhysicsen
dc.identifier.orcid_id0000-0003-0053-8452
dc.status.accessibleNen
dc.contributor.sponsorScience Foundation Ireland (SFI)en


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record