Effects of pressure on two-dimensional networked single-molecule magnets exhibiting ac-field-switchable magnetic properties

Masaki Mito, Masash Ogawa, Hiroyuk Deguchi, Masahir Yamashita, Hitosh Miyasaka

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We investigated, through the measurement of nonlinear magnetic responses, the effects of pressure on twodimensional (2D) networked single-molecule magnets (SMMs), in which the Ising nature of SMMs and their aggregates (SMM-aggregates) competed with the magnetic correlation between SMMs or between SMM-aggregates, respectively. At ambient pressure, as the frequency of the AC field increases, the initial magnetic behavior of SMMaggregate consisting of several SMMs transforms to that shown by individual SMMs. We investigated the effects of pressure on the above AC-field-switchable magnetic properties by varying temperature, AC field frequency, and pressure. Pressurization destroyed the regular intermolecular network, and above approximately 3 kbar, the magnetic network was enlarged randomly. Hence, the regularity in SMM-aggregate is weakened with increasing pressure, resulting in the suppression of the Ising nature of SMM-aggregate. Furthermore, above approximately 3 kbar, a glassy behavior becomes prominent owing to the randomness in the Ising nature of SMM.

Original languageEnglish
Article number064716
Journaljournal of the physical society of japan
Volume81
Issue number6
DOIs
Publication statusPublished - 2012 Jun 1

Keywords

  • Dipolar glass
  • Ising nature
  • Magnetic cluster
  • Nonlinear magnetic susceptibility
  • Pressure effects
  • Single-molecule magnet
  • Spin glass

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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