TY - JOUR
T1 - Magnetic and magneto-optical properties of two-dimensional cyanide-bridged Fe(1-x)IIICoxIIINiII solid solutions having fragmented magnetic domain
AU - Ohba, Masaaki
AU - Iwamoto, Takashi
AU - Kaneko, Wakako
AU - Kitagawa, Susumu
AU - Okawa, Hisashi
N1 - Funding Information:
This work was supported by a Grant-in-Aid for Scientific Researches from the Ministry of Education, Culture, Sports, Science and Technology, Japan (No. 16655021) and by and Precursory Research for Embryonic Science and Technology (PRESTO), JST.
PY - 2005/11/17
Y1 - 2005/11/17
N2 - Two-dimensional cyanide-bridged Fe(1-x)IIICoxIIINiII solid solutions, {[Ni(1,1-dmen)2]2[Fe(1 - x)Co x(CN)6]}tfs·nH2O (x = 0.0, 0.12, 0.23, 0.35, 0.47, 0.54, 0.57, 0.64, 0.72, 0.81, 1.0; 1,1-dmen = 1,1- dimethylethylenediamine, tfs- = trifluoromethanesulfonate ion), have been prepared. All compounds form a 2-D grid structure extended by the M-CN-Ni linkages. Compounds with x < 0.64 show a ferromagnetic ordering above 2 K based on a ferromagnetic interaction between low-spin FeIII and NiII. MCD spectra show a strong Faraday ellipticity at ∼470 nm associated with the LMCT band of the Fe-CN. Their phase transition temperature and intensity of Faraday ellipticity decrease with increasing x value due to fragmentation of magnetic domain by diamagnetic [Co(CN)6] 3- units.
AB - Two-dimensional cyanide-bridged Fe(1-x)IIICoxIIINiII solid solutions, {[Ni(1,1-dmen)2]2[Fe(1 - x)Co x(CN)6]}tfs·nH2O (x = 0.0, 0.12, 0.23, 0.35, 0.47, 0.54, 0.57, 0.64, 0.72, 0.81, 1.0; 1,1-dmen = 1,1- dimethylethylenediamine, tfs- = trifluoromethanesulfonate ion), have been prepared. All compounds form a 2-D grid structure extended by the M-CN-Ni linkages. Compounds with x < 0.64 show a ferromagnetic ordering above 2 K based on a ferromagnetic interaction between low-spin FeIII and NiII. MCD spectra show a strong Faraday ellipticity at ∼470 nm associated with the LMCT band of the Fe-CN. Their phase transition temperature and intensity of Faraday ellipticity decrease with increasing x value due to fragmentation of magnetic domain by diamagnetic [Co(CN)6] 3- units.
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U2 - 10.1016/j.poly.2005.03.166
DO - 10.1016/j.poly.2005.03.166
M3 - Article
AN - SCOPUS:27644597582
SN - 0277-5387
VL - 24
SP - 2839
EP - 2843
JO - Polyhedron
JF - Polyhedron
IS - 16-17
ER -