Uncompensation Effect in a One-Dimensional Alternating-Spin Ising Ferrimagnet with Competing Interactions

Jong Jae Kim, Shigeyoshi Mori, Isao Harada

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The characteristic short-range orders (SROs) in a one-dimensional Ising ferrimagnet, which is composed of alternating spins with different spin quantum numbers, Lande g-factors, and next-nearest-neighbor interactions, are investigated by the numerically exact calculation of a nonsymmetric transfer matrix. Due to the uncompensating moments, some SROs in the system show very different characteristics from those in the uniform-spin ANNNI chain; (i) the peculiar two-peaked structure of the static spin structure factor S(q), indicating not two different SROs but the same SRO, and (ii) an unusual thermal recovery of the ferrimagnetic SRO, carrying three disorder points, under a non-zero external field. Decaying features of the characteristic SROs and the magnetic behavior of the system with variation of external field are also discussed.

Original languageEnglish
Pages (from-to)2624-2631
Number of pages8
Journaljournal of the physical society of japan
Volume65
Issue number8
DOIs
Publication statusPublished - Jan 1 1996

Keywords

  • 1D ising ferrimagnet
  • Alternating spins
  • Competing interactions
  • Metamagnetic process
  • Reentrant SRO
  • Two-peaked structure factor
  • Uncompensation effect

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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