Magnetic Properties of One-Dimensional Heisenberg Chains with Ferromagnetic-Antiferromagnetic Bond Alternation

Masayuki Hagiwara, Yasuo Narumi, Koichi Kindo, Tatsuo Kobayashi, Hirokazu Yamakage, Kiichi Amaya, Georg Schumauch

Research output: Contribution to journalArticle

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Abstract

We report the results of susceptibility and magnetization measurements on ferromagnetic-antiferromagnetic alternating chain compounds [Cu(TIM)]CuCl4 (TIM=2,3,9,10-tetramethyl-1,3,8,10-tetraenecyclo-1,4,8,11-tetraazatetradecane) and (4-BzpipdH)CuCl3 (4-BzpipdH=4-benzylpiperidinium). Magnetization curves of both compounds are compared to those calculated for an S=1 linear-chain Heisenberg antiferromagnet. From the fitting of susceptibility data to a numerical formula calculated for an S=1/2 ferromagnetic-antiferromagnetic alternating chain [Inog. Chem. 33 (1994) 5171], we have estimated the antiferromagnetic exchange constant JAF/kB=2.9 K, the ferromagnetic exchange constant \JF\/kB=4.7 K and the g-value of the magnetic moment g=2.06 for the former and JAF/kB=8.8 K, |JF|/kB=38.8 K and g=2.17 for the latter, which are different from the values reported previously.

Original languageEnglish
Pages (from-to)1792-1795
Number of pages4
JournalJournal of the Physical Society of Japan
Volume66
Issue number6
Publication statusPublished - Jun 1997
Externally publishedYes

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alternations
magnetic properties
magnetic permeability
magnetization
magnetic moments
curves

Keywords

  • Ferromagnetic-antiferromagnetic alternating chain
  • Haldane's conjecture
  • Magnetization
  • Susceptibility

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Magnetic Properties of One-Dimensional Heisenberg Chains with Ferromagnetic-Antiferromagnetic Bond Alternation. / Hagiwara, Masayuki; Narumi, Yasuo; Kindo, Koichi; Kobayashi, Tatsuo; Yamakage, Hirokazu; Amaya, Kiichi; Schumauch, Georg.

In: Journal of the Physical Society of Japan, Vol. 66, No. 6, 06.1997, p. 1792-1795.

Research output: Contribution to journalArticle

Hagiwara, M, Narumi, Y, Kindo, K, Kobayashi, T, Yamakage, H, Amaya, K & Schumauch, G 1997, 'Magnetic Properties of One-Dimensional Heisenberg Chains with Ferromagnetic-Antiferromagnetic Bond Alternation', Journal of the Physical Society of Japan, vol. 66, no. 6, pp. 1792-1795.
Hagiwara, Masayuki ; Narumi, Yasuo ; Kindo, Koichi ; Kobayashi, Tatsuo ; Yamakage, Hirokazu ; Amaya, Kiichi ; Schumauch, Georg. / Magnetic Properties of One-Dimensional Heisenberg Chains with Ferromagnetic-Antiferromagnetic Bond Alternation. In: Journal of the Physical Society of Japan. 1997 ; Vol. 66, No. 6. pp. 1792-1795.
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AU - Narumi, Yasuo

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AU - Yamakage, Hirokazu

AU - Amaya, Kiichi

AU - Schumauch, Georg

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N2 - We report the results of susceptibility and magnetization measurements on ferromagnetic-antiferromagnetic alternating chain compounds [Cu(TIM)]CuCl4 (TIM=2,3,9,10-tetramethyl-1,3,8,10-tetraenecyclo-1,4,8,11-tetraazatetradecane) and (4-BzpipdH)CuCl3 (4-BzpipdH=4-benzylpiperidinium). Magnetization curves of both compounds are compared to those calculated for an S=1 linear-chain Heisenberg antiferromagnet. From the fitting of susceptibility data to a numerical formula calculated for an S=1/2 ferromagnetic-antiferromagnetic alternating chain [Inog. Chem. 33 (1994) 5171], we have estimated the antiferromagnetic exchange constant JAF/kB=2.9 K, the ferromagnetic exchange constant \JF\/kB=4.7 K and the g-value of the magnetic moment g=2.06 for the former and JAF/kB=8.8 K, |JF|/kB=38.8 K and g=2.17 for the latter, which are different from the values reported previously.

AB - We report the results of susceptibility and magnetization measurements on ferromagnetic-antiferromagnetic alternating chain compounds [Cu(TIM)]CuCl4 (TIM=2,3,9,10-tetramethyl-1,3,8,10-tetraenecyclo-1,4,8,11-tetraazatetradecane) and (4-BzpipdH)CuCl3 (4-BzpipdH=4-benzylpiperidinium). Magnetization curves of both compounds are compared to those calculated for an S=1 linear-chain Heisenberg antiferromagnet. From the fitting of susceptibility data to a numerical formula calculated for an S=1/2 ferromagnetic-antiferromagnetic alternating chain [Inog. Chem. 33 (1994) 5171], we have estimated the antiferromagnetic exchange constant JAF/kB=2.9 K, the ferromagnetic exchange constant \JF\/kB=4.7 K and the g-value of the magnetic moment g=2.06 for the former and JAF/kB=8.8 K, |JF|/kB=38.8 K and g=2.17 for the latter, which are different from the values reported previously.

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