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- Title
Cu<sub>3</sub>(tmen)<sub>3</sub>(tma)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub> ·6.5H<sub>2</sub>O - New S = 1/2 "Sawtooth" Chain?
- Authors
Vrábel, P.; Orendáčová, A.; Černák, J.; Orendáč, M.
- Abstract
The results of the investigation of magnetic susceptibility, magnetization and specific heat of Cu3(tmen)3(tma)2(H2O)2 ·6.5H2O (tmen = N,N,N′,N′-tetra-methylethane-1,2 diamine; H3tma = 1,3,5-benzene-tri-carboxylic acid) are reported. The spatial arrangement of magnetic Cu(II) ions and network of covalent bonds suggest that the studied material might be a representative of S = 1/2 sawtooth chain with moderate exchange coupling J/kB. The investigation of the temperature dependence of susceptibility and magnetic field dependence of magnetization yielding J/kB ≈ - 0.63 K is consistent with the structural features. In addition, specific heat data reveal short-range correlations in milikelvin temperature range and indicate long-range ordering below 150 mK.
- Subjects
MAGNETIC properties of copper; MAGNETIC susceptibility; MAGNETIZATION; THERMAL conductivity; MAGNETIC fields; MAGNETIC coupling
- Publication
Acta Physica Polonica: A, 2010, Vol 118, Issue 5, p993
- ISSN
0587-4246
- Publication type
Article