Weak Ferromagnetism in a Semiconducting (Ethylenedithiodiselena-
dithiafulvalenoquinone-1,3-diselenolemethide)2·FeBr4 Salt

Hayashi, Toshiki; Xiao, Xunwen; Fujiwara, Hideki; Sugimoto, Toyonari; Nakazumi, Hiroyuki; Noguchi, Satoru; Katori, Hiroko Aruga

doi:10.1021/ic701260p.s003

Weak Ferromagnetism in a Semiconducting (Ethylenedithiodiselena- dithiafulvalenoquinone-1,3-diselenolemethide)₂·FeBr₄ Salt

journal contribution

posted on 2007-10-15, 00:00 authored by Toshiki Hayashi, Xunwen Xiao, Hideki Fujiwara, Toyonari Sugimoto, Hiroyuki Nakazumi, Satoru Noguchi, Hiroko Aruga Katori

The 2:1 salts of a new bent donor molecule, ethylenedithiodiselenadithiafulvalenoquinone-1,3-diselenolemethide (EDT-DSDTFVODS) and either an FeBr₄^- or a GaBr₄^- ion exhibit semiconducting properties and had small activation energies. The Fe^III d spins of the FeBr₄^- salt are initially subject to a strong antiferromagnetic interaction and afterward exhibited a weak ferromagnetism at 3.8 K with a very small remanent magnetization of ca. 4 × 10^-2 μ_B and a spin-flop near 25 kOe along the intercolumnar direction.