Pressure effects of an S = 1 Heisenberg antiferromagnetic bond alternating chain

Masaki Mito, Osamu Fujita, Masako Hitaka, Tatsuya Kawae, Kazuyoshi Takeda, Seishi Takagi, Hiroyuki Deguchi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

By the measurement of magnetic susceptibility under pressures (P) up to 8 kbar, we investigated pressure effects of the S = 1 Heisenberg antiferromagnetic bond alternating chain compound [{Ni(333-tet)(μ-N3)}n](ClO4)n (333-tet denotes N,N′-bis(3-aminopropyl)-1,3-propanediamine), whose alternating interaction ratio (α) at ambient pressure is very close to the theoretical value for the gapless point (αc, ≃ 0.59). There are two kinds of intrachain interactions due to bond alternation (J1 and J2), both of which are increased linearly against the pressure. At P = 8 kbar those magnitudes exceed 1.4 times of those at ambient pressure. The magnitude of α = J2/J1, however, does not change largely. The normalized magnetic susceptibility χ|J1|kB around kBΤ/\J1\ = 0.1 has the maximum value at P = 2 kbar, and this suggests the possibility of the slight changes of α and D.

Original languageEnglish
Pages (from-to)1375-1379
Number of pages5
Journaljournal of the physical society of japan
Volume70
Issue number5
DOIs
Publication statusPublished - May 1 2001

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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