title: Weak DyIII-DyIIIInteractions in DyIII-Phthalocyaninato Multiple-Decker Single-Molecule Magnets Effectively Suppress Magnetic Relaxation.
abstract: The DyIIIquintuple-decker complex DyCdCdDy and hetero quadruple-decker complex DyCdY were synthesized, and their magnetic properties were compared with those of the quadruple-decker complex DyCdDy. Single-crystal X-ray analysis revealed that the coordination geometries around the DyIIIions of DyCdCdDy, DyCdY, and DyCdDy were similar. dc (direct current) magnetic measurements indicated that DyCdCdDy had very weak ferromagnetic DyIII-DyIIIinteractions but DyCdY did not. From a comparison of the magnetic relaxation times (τ) of the three complexes, the τ values of DyCdCdDy and DyCdDy, which have weak DyIII-DyIIIinteractions, are longer than that of DyCdY. In other words, weak DyIII-DyIIIinteractions effectively suppress magnetic relaxation.
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University , 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
authors.forename: Yoji
authors.initials: Y
authors.lastname: Horii
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University , 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
authors.forename: Keiichi
authors.initials: K
authors.lastname: Katoh
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University , 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
authors.forename: Goulven
authors.initials: G
authors.lastname: Cosquer
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University , 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
authors.forename: Brian K
authors.initials: BK
authors.lastname: Breedlove
authors.affiliation: Department of Chemistry, Graduate School of Science, Tohoku University , 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan.|WPI Research Center, Advanced Institute for Materials Research, Tohoku University , 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Yamashita