A study on additional magnetic modulation vectors observed in the element neodymium

ORAL

Abstract

The element neodymium hosts a complex but fascinating cascade of magnetic transitions. Here we present the results of small angle neutron scattering investigations of magnetic phases of neodymium.  Our measurements demonstrate the appearance of an additional set of magnetic modulation peaks for 5.9(1) ≤ T ≤ 7.6(1) K and µ0H ≤ 1.0(1) T for fields applied along the c-axis.  This set of magnetic peaks is described by a modulation vector of 0.06 a* and is smaller than previously reported observations from the studies performed in higher Brillouin zones. The SANS measurements facilitate a comparison between modulation vectors originating from each of the two distinct sites, typically termed cubic and hexagonal sites, in the double hexagonal closed packed structure of Nd.  From these observations we conclude that additional modulation vectors originate primarily from order on the cubic sites.   

*This work was supported by U.S. DOE, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. H. Suriya Arachchige and G. Pokharel are funded by Gordon and Betty Moore Foundation’s EPiQS Initiative.

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Presenters

  • Hasitha Suriya Arachchige

    • University of Tennessee
    • University of Tennesse

Authors

  • Hasitha Suriya Arachchige

    • University of Tennessee
    • University of Tennesse

  • Lisa M DeBeer-Schmitt

    • Oak Ridge National Lab

  • Andrew F May

    • Oak Ridge National Lab

  • David S Parker

    • Oak Ridge National Lab

  • Ganesh Pokharel

    • University of California, Santa Barbara

  • Markus Bleuel

    • NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
    • National Institute of Standards and Technology

  • Binod K Rai

    • Savannah River Natl Laboratory

  • Joseph Paddison

    • Oak Ridge National Lab

  • Wei Tian

    • Oak Ridge National Laboratory
    • Oak Ridge National Laboratory, HFIR
    • Oak Ridge National Lab

  • Masaaki Matsuda

    • Oak Ridge National Lab
    • Oak Ridge National Laboratory

  • Yaohua Liu

    • Oak Ridge National Lab
    • Oak Ridge National Laboratory
    • Neutron Scattering Division, Oak Ridge National Laboratory

  • David G Mandrus

    • University of Tennessee
    • Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN, 37916, USA

  • Cristian Batista

    • University of Tennessee

  • Andrew Christianson

    • Materials Science and Technology Division, ORNL, USA
    • Oak Ridge National Laboratory
    • Oak Ridge National Lab
    • oak ridge national lab