Anisotropic magnetocaloric effect in single crystals of CrI3

Yu Liu (刘育) and C. Petrovic
Phys. Rev. B 97, 174418 – Published 21 May 2018

Abstract

We report a systematic investigation of dc magnetization and ac susceptibility, as well as anisotropic magnetocaloric effect in bulk CrI3 single crystals. A second-stage magnetic transition was observed just below the Curie temperature Tc, indicating a two-step magnetic ordering. The low temperature thermal demagnetization could be well fitted by the spin-wave model rather than the single-particle model, confirming its localized magnetism. The maximum magnetic entropy change ΔSMmax5.65 J kg1K1 and the corresponding adiabatic temperature change ΔTad2.34 K are achieved from heat capacity analysis with the magnetic field up to 9 T. Anisotropy of ΔSM(T,H) was further investigated by isothermal magnetization, showing that the difference of ΔSMmax between the ab plane and the c axis reaches a maximum value 1.56 J kg1K1 with the field change of 5 T. With the scaling analysis of ΔSM, the rescaled ΔSM(T,H) curves collapse onto a universal curve, indicating a second-order type of the magnetic transition. Furthermore, the ΔSMmax follows the power law of Hn with n=0.64(1), and the relative cooling power depends on Hm with m=1.12(1).

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  • Received 31 March 2018
  • Revised 29 April 2018
  • Corrected 29 November 2018
  • Corrected 14 January 2020

DOI:https://doi.org/10.1103/PhysRevB.97.174418

©2018 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
Condensed Matter, Materials & Applied Physics

Corrections

29 November 2018

Correction: Missing support information in the Acknowledgment section has been inserted.

14 January 2020

Second Correction: Some statements in the Acknowledgment section have been updated.

Authors & Affiliations

Yu Liu (刘育) and C. Petrovic

  • Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA

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Issue

Vol. 97, Iss. 17 — 1 May 2018

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