Magnetic ordering in metallic TlCo2-xNixS2 (0 ⪕ x ⪕ 2.0) with the ThCr2Si2 structure

Guohe Huan, Martha Greenblatt, K. V. Ramanujachary

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Abstract

Solid solutions of TlCo2-xNixS2 (0 {slanted equal to or less-than} x {slanted equal to or less-than} 2.0) with the ThCr2Si2-type structure were prepared by high temperature solid state reaction. All of the samples are highly metallic (δ ∼ 10-4-10-5 Ω-cm). TlCo2S2 orders ferromagnetically at ∼ 152 K, and TlNi2S2 is Pauli paramagnetic. Substitution of Co by Ni in TlCo2-xNixS2 (0.05 {slanted equal to or less-than} x {slanted equal to or less-than} 1.25) results in antiferromagnetic behavior. The magnetic moments localized on the Co ions in TlCo2S2 have been found to be oriented parallel with the a crystallographic direction as determined by magnetic measurements on an oriented single crystal. The magnetic structure of TlCo2-xNixS2 and the possible role of Ni ions in the solid solutions is discussed.

Original languageEnglish (US)
Pages (from-to)221-228
Number of pages8
JournalSolid State Communications
Volume71
Issue number3
DOIs
StatePublished - Jul 1989

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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