2024-03-28T13:28:35Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/821032022-11-17T02:08:08Zhdl_2115_20039hdl_2115_116Field-induced successive phase transitions in the J(1)-J(2) buckled honeycomb antiferromagnet Cs3Fe2Cl9Ishii, Y.Narumi, Y.Matsushita, Y.Oda, M.Kida, T.Hagiwara, M.1000030566758Yoshida, H. K.open accessCopyright 2021 by The American Physical Society.427The magnetic properties of Cs3Fe2Cl9 single crystals were investigated by magnetic and thermal measurements. The crystal structure of Cs3Fe2Cl9 consists of a bilayer triangular lattice of Fe3+ ions. The analysis of magnetic susceptibility clarified that the intra- and interdimer interactions are comparable with each other, and Cs3Fe2Cl9 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 vertical bar vertical bar c axis exhibits a sudden drop at the Neel temperature T-N = 5.4 K, indicating a first-order magnetic phase transition. One of the characteristic features is the linear temperature dependence below TN. Furthermore, Cs3Fe2Cl9 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 magnetization-plateau 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.American Physical Society (APS)2021-03-25engjournal articleVoRhttp://hdl.handle.net/2115/82103https://doi.org/10.1103/PhysRevB.103.1044332469-9950Physical Review B10310104433https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/82103/1/Phys.%20Rev.%20B%20103-10_104433.pdfapplication/pdf2.78 MB2021-03-25