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Field-induced successive phase transitions in the <mml:math xmlns:mml="buckled honeycomb antiferromagnet Cs3Fe2Cl9 by Y. Ishii; Y. Narumi; Y. Matsushita; M. Oda; T. Kida; M. Hagiwara; H. K. Yoshida is a Physics and Astronomy article available to read on EtoBox.

What is Field-induced successive phase transitions in the <mml:math xmlns:mml="buckled honeycomb antiferromagnet Cs3Fe2Cl9 about?

The magnetic properties of Cs 3 Fe 2 Cl 9 single crystals were investigated by magnetic and thermal measurements. The crystal structure of Cs 3 Fe 2 Cl 9 consists of a bilayer triangular lattice of Fe 3+ ions. The analysis of magnetic susceptibility clarified that the intra-and interdimer interactions are comparable with each other, and Cs 3 Fe 2 Cl 9 is regarded as a spin-5/2 J 1 -J 2 buckled honeycomb antiferromagnet with the ferromagnetic interlayer interaction J 3 . The susceptibility for the magnetic field H ||c axis exhibits a sudden drop at the Néel temperature T N = 5.4 K, indicating a first-order magnetic phase transition. One of the characteristic features is the linear temperature dependence below T N . Furthermore, Cs 3 Fe 2 Cl 9 undergoes successive magnetic phase transitions in high magnetic fields along the c axis. We obtained a rich H-T phase diagram in which the M s /2 magnetizationplateau phase is included. These unique magnetic behaviors probably originate from the competition of magnetic interactions and the easy-axis anisotropy in the antiferromagnetic J 1 -J 2 buckled honeycomb network.

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Author

Y. Ishii; Y. Narumi; Y. Matsushita; M. Oda; T. Kida; M. Hagiwara; H. K. Yoshida

Publisher

American Physical Society (APS)

Published

2021

Language

EN

Field

Physics and Astronomy (Physical Sciences)