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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.   

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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