• Login
    View Item 
    •   Home
    • Research
    • Articles
    • View Item
    •   Home
    • Research
    • Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of KAUSTCommunitiesIssue DateSubmit DateThis CollectionIssue DateSubmit Date

    My Account

    Login

    Quick Links

    Open Access PolicyORCID LibguideTheses and Dissertations LibguideSubmit an Item

    Statistics

    Display statistics

    Local order in Cr-Fe-Co-Ni: Experiment and electronic structure calculations

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    PhysRevB.99.014206.pdf
    Size:
    2.258Mb
    Format:
    PDF
    Description:
    Published version
    Download
    Type
    Article
    Authors
    Schönfeld, B.
    Sax, C. R.
    Zemp, J.
    Engelke, M.
    Boesecke, P.
    Kresse, Thomas
    Boll, T.
    Al-Kassab, Tala'at
    Peil, O. E.
    Ruban, A. V.
    KAUST Department
    Office of the VP
    Physical Science and Engineering (PSE) Division
    Date
    2019-01-18
    Permanent link to this record
    http://hdl.handle.net/10754/631137
    
    Metadata
    Show full item record
    Abstract
    A quenched-in state of thermal equilibrium (at 723 K) in a single crystal of Cr-Fe-Co-Ni close to equal atomic percent was studied. Atom probe tomography revealed a single-phase state with no signs of long-range order. The presence of short-range order (SRO) was established by diffuse x-ray scattering exploiting the variation in scattering contrast close to the absorption edges of the constituents: At the incoming photon energies of 5969, 7092, and 8313 eV, SRO maxima that result from the linear superposition of the six partial SRO scattering patterns, were always found at X position. Electronic structure calculations showed that this type of maximum stems from the strong Cr-Ni and Cr-Co pair correlations, that are furthermore connected with the largest scattering contrast at 5969 eV. The calculated effective pair interaction parameters revealed an order-disorder transition at approximately 500 K to a L12-type (Fe,Co,Ni)3Cr structure. The calculated magnetic exchange interactions were dominantly of the antiferromagnetic type between Cr and any other alloy component and ferromagnetic between Fe, Co, and Ni. They yielded a Curie temperature (TC) of 120 K, close to experimental findings. Despite the low value of TC, the global magnetic state strongly affects chemical and elastic interactions in this system. In particular, it significantly increases the ordering tendency in the ferromagnetic state compared to the paramagnetic one.
    Citation
    Schönfeld B, Sax CR, Zemp J, Engelke M, Boesecke P, et al. (2019) Local order in Cr-Fe-Co-Ni: Experiment and electronic structure calculations. Physical Review B 99. Available: http://dx.doi.org/10.1103/PhysRevB.99.014206.
    Sponsors
    The authors are grateful to E. Fischer for growing the single crystal. They gratefully acknowledge the European Synchrotron Radiation Facility (ESRF) for provision of synchrotron radiation at beamline ID01. B.S. thanks KAUST for providing measuring time for the APT studies. A.V.R. acknowledges the support of the Swedish Research Council (VR project 2015-05538), a European Research Council grant, the VINNEX center Hero-m, financed by the Swedish Governmental Agency for Innovation Systems (VINNOVA), Swedish industry, and the Royal Institute of Technology (KTH). Calculations were done using NSC (Linköping) and PDC (Stockholm) resources provided by the Swedish National Infrastructure for Computing (SNIC). A.V.R. and O.E.P. also acknowledge the financial support under the scope of the COMET program within the K2 Center “Integrated Computational Material, Process and Product Engineering (IC-MPPE)” (Project No 859480). This program is supported by the Austrian Federal Ministries for Transport, Innovation and Technology (BMVIT) and for Digital and Economic Affairs (BMDW), represented by the Austrian research funding association (FFG), and the federal states of Styria, Upper Austria and Tyrol.
    Publisher
    American Physical Society (APS)
    Journal
    Physical Review B
    DOI
    10.1103/PhysRevB.99.014206
    Additional Links
    https://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.014206
    ae974a485f413a2113503eed53cd6c53
    10.1103/PhysRevB.99.014206
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division

    entitlement

     
    DSpace software copyright © 2002-2022  DuraSpace
    Quick Guide | Contact Us | KAUST University Library
    Open Repository is a service hosted by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. For anonymous users the allowed maximum amount is 50 search results.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.