Spin correlation and relaxational dynamics in molecular-based single-chain magnets

Jun Ichiro Kishine, Tomonari Watanabe, Hiroyuki Deguchi, Masaki Mito, Tôru Sakai, Takayuki Tajiri, Masahiro Yamashita, Hitoshi Miyasaka

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

We report the combined measurements of the dc susceptibility χ0, the ac susceptibility χ′, and the NMR relaxation rate T1 -1 for the molecular-based heterometallic single-chain magnet [Mn (saltmen)] 2 [Ni (pao)2 (py)2] (P F6) 2. At low temperatures, this system is well described by a one-dimensional array of effective spin S=3 chains comprising the MnIII - NiII - MnIII trimers and treated as the S=3 Ising chain with the single-ion term (Blume-Capel model). Using the exact solution of the model and based on the picture that the random motion of the local domain walls dominates the low-temperature spin dynamics, we succeeded in reproducing the experimental results of the dc susceptibility χ0, the ac susceptibility χ′, and the F19 -NMR relaxation rate T1 -1 in a consistent manner.

Original languageEnglish
Article number224419
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume74
Issue number22
DOIs
Publication statusPublished - 2006 Dec 21

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Spin correlation and relaxational dynamics in molecular-based single-chain magnets'. Together they form a unique fingerprint.

Cite this