• Open Access

Anisotropic magnetization, critical temperature, and paramagnetic Curie temperature in the highly anisotropic magnetic Heusler compound Rh2CoSb

Yangkun He, Romain Sibille, Dong Chen, Johannes Kroder, Toni Helm, Walter Schnelle, Claudia Felser, and Gerhard H. Fecher
Phys. Rev. B 103, 214436 – Published 21 June 2021

Abstract

The paramagnetic Curie temperature θp is a concept that describes the magnetic ordering temperature in the well-established Curie-Weiss law. Despite the successful explanations of the magnetic behavior, the anisotropy is not usually considered. Although anisotropic θp has been reported for several layered antiferromagnetic or ferrimagnetic materials owing to the orientation-dependent exchange, in ferromagnetic systems, θp was thought to be almost isotropic for decades, and the occasionally reported small difference has remained unexplained. In this paper, we experimentally report the anisotropic magnetization, critical temperature, and paramagnetic Curie temperature in highly anisotropic magnetic Rh2CoSb caused by a large magnetocrystalline anisotropy. The saturation magnetization along the c axis is 25% larger than that along the a axis. The critical temperature and paramagnetic Curie temperature along the c axis are 6 and 15 K higher than those along the a axis, respectively, as deduced from the Arrott plots and inverse susceptibility. A simple modification of the Curie-Weiss law was made to calculate the anisotropic θp, which well explains not only Rh2CoSb, but also many other previously reported ferromagnetic materials.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 6 April 2021
  • Revised 18 May 2021
  • Accepted 4 June 2021

DOI:https://doi.org/10.1103/PhysRevB.103.214436

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by the Max Planck Society.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Yangkun He1,*, Romain Sibille2, Dong Chen1, Johannes Kroder1, Toni Helm1,3, Walter Schnelle1, Claudia Felser1, and Gerhard H. Fecher1

  • 1Max-Planck-Institute for Chemical Physics of Solids, D-01187 Dresden, Germany
  • 2Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
  • 3Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden–Rossendorf, 01328 Dresden, Germany

  • *yangkun.he@cpfs.mpg.de

Article Text

Click to Expand

References

Click to Expand
Issue

Vol. 103, Iss. 21 — 1 June 2021

Reuse & Permissions

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Reuse & Permissions

It is not necessary to obtain permission to reuse this article or its components as it is available under the terms of the Creative Commons Attribution 4.0 International license. This license permits unrestricted use, distribution, and reproduction in any medium, provided attribution to the author(s) and the published article's title, journal citation, and DOI are maintained. Please note that some figures may have been included with permission from other third parties. It is your responsibility to obtain the proper permission from the rights holder directly for these figures.

×

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×