CsFe3(SeO3)2F6 with S = 5/2 Cube Tile Lattice

Hongcheng Lu; Hiroshi Kageyama

doi:10.1021/acs.inorgchem.8b00859

CsFe₃(SeO₃)₂F₆ with S = 5/2 Cube Tile Lattice

Inorg Chem. 2018 May 21;57(10):6186-6190. doi: 10.1021/acs.inorgchem.8b00859. Epub 2018 May 9.

Authors

Hongcheng Lu¹, Hiroshi Kageyama^{1

2}

Affiliations

¹ Graduate School of Engineering , Kyoto University , Kyoto 615-8510 , Japan.
² Japan Science and Technology Agency , CREST , Kawaguchi , Saitama 332-0012 , Japan.

PMID: 29741890
DOI: 10.1021/acs.inorgchem.8b00859

Abstract

A layered iron selenite fluoride CsFe₃(SeO₃)₂F₆ 1 was hydrothermally synthesized. Single-crystal X-ray diffraction studies show that 1 has a trigonal ( P3̅ m1) lattice, where [Fe₃(SeO₃)₂F₆]^- blocks of three iron sublayers are separated by Cs cations. Within the block, only Fe(2)F₆ and Fe(1)O₃F₃ octahedra are magnetically connected via superexchange Fe(1) -F -Fe(2) pathways, giving an S = 5/2 cube tile (dice) lattice. At low magnetic field, 1 exhibits an antiferromagnetic transition at ∼130 K, where ferrimagnetic cube tile layers are arranged in a staggered manner. At low temperatures, we observed a field-induced transition to a ferrimagnetic state with a one-third magnetization plateau.