Control of the Spin Dynamics of Single-Molecule Magnets by using a Quasi One-Dimensional Arrangement

Keiichi Katoh, Satoshi Yamashita, Nobuhiro Yasuda, Yasutaka Kitagawa, Brian K. Breedlove, Yasuhiro Nakazawa, Masahiro Yamashita

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

Magnetic dipole interactions are dominate in quasi one-dimensional (1D) molecular magnetic materials, in which TbNcPc units (Tb3+=terbium(III) ion, Nc2−=naphthalocyaninato, Pc2−=phthalocyaninato) adopt a structure similar to TbPc2 single-molecule magnets (SMMs). The magnetic properties of the [TbNcPc]0/+ (neutral 1 and cationic 2) with 1D structures are significantly different from those of a magnetically diluted sample (3). In particular, the magnetic relaxation time (τ) of 2 in the low-temperature region is five orders of magnitude slower than that of 3. Furthermore, the coercivity (HC) of 2 remained up to about 20 K. The single-ion anisotropy of Tb3+ ions in a 1D structure and the magnetic dipole interactions acting among molecules determines the direction of the magnetic properties. These results show that the spin dynamics can be improved by manipulating the arrangement of SMMs in the solid state.

Original languageEnglish
Pages (from-to)9262-9267
Number of pages6
JournalAngewandte Chemie - International Edition
Volume57
Issue number30
DOIs
Publication statusPublished - 2018 Jul 20

Keywords

  • magnetic dipole interaction
  • one-dimensional structure
  • single-molecule magnets
  • spin blocking phenomenon
  • spin dynamics

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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