Magnetic behaviors after irradiation of assemblies consisting of bis(hexafluoroacetylacetonato)copper(II) and tetrapyridyl-pentadiazo compound in frozen solution

Satoru Karasawa, Noboru Koga

Research output: Contribution to journalArticle

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Abstract

Magnetic properties after irradiation of the mixture of Cu(hfac)2 and tetrapyridine-pentadiazo compound 4 in MTHF/CH2Cl2 solutions by 1:2, 1:1, and 2:1 ratios were investigated by SQUID magneto/susceptometry. Field dependence of magnetization at 2 K after irradiation of the 1:2 mixture suggested the formation of high-spin complex, 4c-Cu(hfac)2-4c, with S = 21/2. In M vs. H plots for the 1:1 and 2:1 mixtures, hysteresis loops with coercive force, Hc ca. 1 and 2 Oe, respectively, were observed. In the a.c. magnetic susceptibility measurement of the 2:1 mixture under similar condition, in-phase and out-of-phase components (χ′ and χ″, respectively) were observed below 18 K. The frequency dependence of peak-top temperature of χ′ and χ″ suggested that its magnetic behavior was spin-glass like.

Original languageEnglish
Pages (from-to)1877-1882
Number of pages6
JournalPolyhedron
Volume22
Issue number14-17
DOIs
Publication statusPublished - Jul 15 2003

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assemblies
Copper
Irradiation
copper
irradiation
Spin glass
SQUIDs
Hysteresis loops
Coercive force
Magnetic susceptibility
spin glass
Magnetization
Magnetic properties
plots
hysteresis
magnetic properties
magnetic permeability
magnetization
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Magnetic behaviors after irradiation of assemblies consisting of bis(hexafluoroacetylacetonato)copper(II) and tetrapyridyl-pentadiazo compound in frozen solution. / Karasawa, Satoru; Koga, Noboru.

In: Polyhedron, Vol. 22, No. 14-17, 15.07.2003, p. 1877-1882.

Research output: Contribution to journalArticle

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