Effect of nonmagnetic impurities on the low-temperature susceptibility of the linear antiferromagnet (CH3)4NMnCl3 (TMMC)

Isao Harada, Chiharu Suzuki, Takashi Tonegawa

Research output: Contribution to journalArticle

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Abstract

The magnetic susceptibilities, Χ∥c and Χ⊥c, for the field parallel and perpendicular to the chain axis are calculated exactly of an anisotropic classical Heisenberg chain diluted randomly with nonmagnetic impurities. These impurities break up completely the host chain into independent segments (finite chains) with various lengths. It is shown that the combined effect of the finite chain and the dipolar anisotropy leads to the crossover in the relative values of Χ∥c and Χ⊥c from Χ∥c > Χ⊥c to Χ⊥c > Χ∥c at sufficiently low temperatures, which has recently been observed in (CH3) 4NMn1-xCdxCl3 (TMMC: Cd) and (CH3)4NMn1-xCuxCl3 (TMMC: Cu). Numerical results for the temperature dependence of Χ∥c and Χ⊥c of these two systems are in good quantitative agreement with the experimental data.

Original languageEnglish
Pages (from-to)942-949
Number of pages8
JournalJournal of the Physical Society of Japan
Volume49
Issue number3
Publication statusPublished - Sep 1980
Externally publishedYes

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magnetic permeability
impurities
crossovers
temperature dependence
anisotropy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Effect of nonmagnetic impurities on the low-temperature susceptibility of the linear antiferromagnet (CH3)4NMnCl3 (TMMC). / Harada, Isao; Suzuki, Chiharu; Tonegawa, Takashi.

In: Journal of the Physical Society of Japan, Vol. 49, No. 3, 09.1980, p. 942-949.

Research output: Contribution to journalArticle

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