Article
 

Giant magnetostriction in annealed Co1 − xFex thin-films

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/2f75rd40m

Descriptions

Attribute NameValues
Creator
Abstract
  • Chemical and structural heterogeneity and the resulting interaction of coexisting phases can lead to extraordinary behaviours in oxides, as observed in piezoelectric materials at morphotropic phase boundaries and relaxor ferroelectrics. However, such phenomena are rare in metallic alloys. Here we show that, by tuning the presence of structural heterogeneity in textured Co[subscript 1 − x]Fe[subscript x] thin films, effective magnetostriction λ[subscript eff] as large as 260 p.p.m. can be achieved at low-saturation field of ~10 mT. Assuming λ[subscript 100] is the dominant component, this number translates to an upper limit of magnetostriction of λ[subscript 100] ≈ 5λ[subscript eff] > 1,000 p.p.m. Microstructural analyses of Co[subscript 1 − x]Fe[subscript x] films indicate that maximal magnetostriction occurs at compositions near the (fcc + bcc)/bcc phase boundary and originates from precipitation of an equilibrium Co-rich fcc phase embedded in a Fe-rich bcc matrix. The results indicate that the recently proposed heterogeneous magnetostriction mechanism can be used to guide exploration of compounds with unusual magnetoelastic properties.
  • Keywords: Fabrication, FE-GA, Multilayers, Microstructure, Similar magnetic Alloys, Extrinsic magnetostriction, TB-FE, Structurally heterogeneous model
License
Resource Type
DOI
Date Available
Date Issued
Citation
  • Hunter, D., Bendersky, L., Lofland, S., Wuttig, M., Takeuchi, I., Osborn, W., . . . . (2011). Giant magnetostriction in annealed Co1-xFex thin-films. Nature Communications, 2 doi: 10.1038/ncomms1529
Journal Title
Journal Volume
  • 2
Academic Affiliation
Rights Statement
Funding Statement (additional comments about funding)
  • This work was funded by NSF MRSEC DMR 0520471 and NSF DMR 0705368, and partially supported by the ONR-MURI under Grant No. N000140610530 and ARO W911NF-07-1-0410.
Publisher
Peer Reviewed
Language
Replaces

Relationships

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
file details YoungMarcusLMechanicalIndustrialManufacturingEngineeringGiantMagnetostrictionAnnealed.pdf 2017-10-26 Public Download