Magnetostriction of AlFe2B2 in high magnetic fields

S. Sharma, A. E. Kovalev, D. J. Rebar, D. Mann, V. Yannello, M. Shatruk, A. V. Suslov, J. H. Smith, and T. Siegrist
Phys. Rev. Materials 5, 064409 – Published 17 June 2021
PDFHTMLExport Citation

Abstract

Using the experimental capability of the x-ray diffraction instrument available at the 25-T Florida split coil magnet at the NHMFL, we investigated the magnetostriction of polycrystalline AlFe2B2. The magnetostriction was measured in the vicinity of the ferromagnetic transition with TC=280K, at 250, 290, and 300 K. AlFe2B2 exhibits an anisotropic change in lattice parameters as a function of magnetic field near the Curie temperature, and a monotonic variation as a function of applied field has been observed, i.e., the c axis increases significantly while the a and b axes decrease with increasing field in the vicinity of TC, irrespective of the measurement temperature. The volume magnetostriction decreases with decreasing temperature and changes its sign across TC. Density functional theory calculations for the nonpolarized and spin-polarized (ferromagnetic) models confirm that the observed changes in lattice parameters due to spin polarization are consistent with the experiment. The relationships for magnetostriction are estimated based on a simplified Landau model that agrees well with the experimental results.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 30 July 2020
  • Accepted 25 May 2021

DOI:https://doi.org/10.1103/PhysRevMaterials.5.064409

©2021 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

S. Sharma1,*, A. E. Kovalev1, D. J. Rebar1, D. Mann2, V. Yannello3, M. Shatruk2, A. V. Suslov1, J. H. Smith1, and T. Siegrist1,4,*

  • 1National High Magnetic Field Laboratory, Tallahassee, Florida 32310, USA
  • 2Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, USA
  • 3Department of Chemistry, Biochemistry and Physics, University of Tampa, Tampa, Florida 33606, USA
  • 4Department of Chemical and Biomedical Engineering, FAMU-FSU College of Engineering, Tallahassee, Florida 32310, USA

  • *Corresponding authors: sharma@magnet.fsu.edu; siegrist@eng.famu.fsu.edu

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 5, Iss. 6 — June 2021

Reuse & Permissions
Access Options
CHORUS

Article Available via CHORUS

Download Accepted Manuscript
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Materials

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×