Two-gap magnetic structure of the two-stack anion-radical salt (N-Me-3,5-Di-Me-Py)(TCNQ) (Py is pyridine)

A. Radváková (1, 2) , O.N. Kazheva (3) , A.N. Chekhlov (3) , O.A. Dyachenko (3) , M. Kucmin (4) , M. Kajňaková (1, 2) , A. Feher (1, 2) , V.A. Starodub (4)

1 Institute of Experimental Physics
2 CLTP IEP - Centre of Low Temperature Physics
3 Institute of Problems of Chemical Physics of RAS
4 Institute of Chemistry [Kielce]

We performed the synthesis of a (N-Me-3,5-di-Me-Py)(TCNQ)2 single crystal and we resolved the crystallic and molecular structure of this salt. Magnetic susceptibility measurements were performed in the temperature range from 2 K to 300 K. The results are studied with respect to two energy gaps in the magnetic excitations spectra which could signify that the Peierls dielectric phase forms in two grades.

Mots clés: A. organic compounds; B. chemical synthesis; C. X-ray diffraction; D. magnetic properties

Domaines: Chimie-Physique [physics.chem-ph]

A. Radváková, O.N. Kazheva, A.N. Chekhlov, O.A. Dyachenko, M. Kucmin, et al.. Two-gap magnetic structure of the two-stack anion-radical salt (N-Me-3,5-Di-Me-Py)(TCNQ) (Py is pyridine). Journal of Physics and Chemistry of Solids, 2010, 71 (5), pp.752. ⟨10.1016/j.jpcs.2010.01.012⟩. ⟨hal-00629935⟩