Single-molecule magnet behavior enhanced by magnetic coupling between 4f and 3d spins

Atsushi Okazawa, Hiroyuki Nojiri, Takayuki Ishida, Norimichi Kojima

研究成果: Article査読

15 被引用数 (Scopus)

抄録

We synthesized and characterized a new compound [{Dy(hfac) 3}2Pd(dpk)2] ([Dy2Pd]; Hdpk = di-2-pyridyl ketoxime), which is isostructural with the known [Dy2Cu] and [Dy2Ni]. The study of the [Dy2Pd] compound containing diamagnetic Pd ion is indispensable to clarify a contribution of the exchange coupling for a 4f-3d single-molecule magnet behavior. From the ac susceptibility measurements on [Dy2Pd], we obtained Δ/kB = 28.6(11) K and TB = 1.1 K. In accordance with the blocking behavior, the pulsed-field magnetization showed the hysteresis behavior below 1.1 K. These parameters on [Dy2Pd] having SPd = 0 was compared with those of the derivatives having SCu = 1/2 (Δ/kB = 47 K and TB = 1.8 K) and SNi = 1 (Δ/kB = 62(4) K and TB = 2.5 K). The TB and Δ steadily increase with the increasing 3d(4d) spin quantum number.

本文言語English
ページ(範囲)3140-3144
ページ数5
ジャーナルPolyhedron
30
18
DOI
出版ステータスPublished - 2011 11 28

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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