Magnetic properties and exchange couplings of one-dimensionally arrayed 4f―3d heterometallic [Ln2Cu2]n compounds
Magnetic properties and exchange couplings of one-dimensionally arrayed 4f―3d heterometallic [Ln2Cu2]n compounds
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一维阵列4f―3d异金属[Ln2Cu2]n化合物的磁性能和交换耦合
DOI:
10.1016/j.poly.2008.12.035
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发表时间:
2009
期刊:
影响因子:
2.6
通讯作者:
T. Ishida
中科院分区:
文献类型:
--
作者:
A. Okazawa;R. Watanabe;H. Nojiri;T. Nogami;T. Ishida
Heterometallic polymeric coordination compounds [{Ln(hfac)2(CH3OH)}2{Cu(dmg)(Hdmg)}2]n([Ln2Cu2]n; Ln=Tb, Ho, and Er; H2dmg=dimethylglyoxime; Hhfac=1,1,1,5,5,5-hexafluoropentane-2,4-dione) were synthesized, and the X-ray crystallographic analysis shows that their structures are isomorphous to those of the known ferrimagnetic [Gd2Cu2]nand [Dy2Cu2]nanalogs. The exchange couplings in [Tb2Cu2]n, [Ho2Cu2]n, and [Er2Cu2]nwere precisely evaluated by high-frequency EPR and pulsed-field magnetization studies, giving JTb−Cu/kB=−0.77(2)K, JHo−Cu/kB=−0.250(12)K and JEr−Cu/kB=−0.149(15)K. They were comparable to those of the Gd and Dy analogs. The absolute value of the exchange coupling parameter monotonically decreases in the order of Gd, Tb, Dy, Ho, and Er.
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DOI:
--
发表时间:
2007
期刊:
Polyhedron 26
影响因子:
--
作者:
S.;Ueki;A.;Okazawa;T.;Ishida;T.;Nogami;H.;Nojiri
通讯作者:
Nojiri
影响因子:
2.8
作者:
Yasuko Kobayashi;S. Ueki;T. Ishida;T. Nogami
通讯作者:
Yasuko Kobayashi;S. Ueki;T. Ishida;T. Nogami
DOI:
--
发表时间:
2008
期刊:
Chem. Mate 20
影响因子:
--
作者:
A. Okazawa;et.al.
通讯作者:
et.al.
影响因子:
15
作者:
Ishikawa, N;Sugita, M;Kaizu, Y
通讯作者:
Kaizu, Y