TY - JOUR
T1 - Conducting molecular magnets based on TTF-derivatives
AU - Miyazaki, A.
AU - Enomoto, K.
AU - Okabe, K.
AU - Yamazaki, H.
AU - Nishijo, J.
AU - Enoki, T.
AU - Ogura, E.
AU - Ugawa, K.
AU - Kuwatani, Y.
AU - Iyoda, M.
PY - 2002/11/1
Y1 - 2002/11/1
N2 - The crystal structures, electronic and magnetic properties of conducting molecular magnets developed in our group are reviewed. (DMET)2FeBr4 is composed of alternating stacks of quasi-one-dimensional (1D) donor sheets and square lattice magnetic anion sheets. This salt undergoes an SDW transition of the donor layer at 40 K and an antiferromagnetic transition of Fe3+ spins on the anion layer at 3.7 K. The one-to-one correspondence of the anomalies appearing on the magnetization curves with those on the magnetoresistance supports the presence of the π-d interaction. (EDO-TTFI2)2[M(mnt)2] (M = Ni,Pt) consists of 1D chains of conducting donors and magnetic anions aligned in parallel. These salts show metallic conductivity accompanied with a metal-insulator transition around 90 K. Localized spins on the anions behave as a 1D ferromagnet, whose origin is explained by McConnell's first model. The properties of related materials, (EDTDM)2FeBr4, (EDS-TTF)2FeBr4 and (EDO-TTFBr2)2FeBr4, are also presented.
AB - The crystal structures, electronic and magnetic properties of conducting molecular magnets developed in our group are reviewed. (DMET)2FeBr4 is composed of alternating stacks of quasi-one-dimensional (1D) donor sheets and square lattice magnetic anion sheets. This salt undergoes an SDW transition of the donor layer at 40 K and an antiferromagnetic transition of Fe3+ spins on the anion layer at 3.7 K. The one-to-one correspondence of the anomalies appearing on the magnetization curves with those on the magnetoresistance supports the presence of the π-d interaction. (EDO-TTFI2)2[M(mnt)2] (M = Ni,Pt) consists of 1D chains of conducting donors and magnetic anions aligned in parallel. These salts show metallic conductivity accompanied with a metal-insulator transition around 90 K. Localized spins on the anions behave as a 1D ferromagnet, whose origin is explained by McConnell's first model. The properties of related materials, (EDTDM)2FeBr4, (EDS-TTF)2FeBr4 and (EDO-TTFBr2)2FeBr4, are also presented.
KW - Molecular conductors
KW - Molecule-based magnets
KW - TTF derivatives
KW - π-d interaction
UR - http://www.scopus.com/inward/record.url?scp=0036869890&partnerID=8YFLogxK
U2 - 10.1006/jssc.2002.9752
DO - 10.1006/jssc.2002.9752
M3 - 学術論文
AN - SCOPUS:0036869890
SN - 0022-4596
VL - 168
SP - 547
EP - 562
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
IS - 2
ER -