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ESR study on the distorted kagome antiferromagnet m-MPYNN BF4 acetone
ESR study on the distorted kagome antiferromagnet m-MPYNN BF4 acetone
- Source :
- Journal of Magnetism and Magnetic Materials. :E1041-E1043
- Publication Year :
- 2004
- Publisher :
- Elsevier BV, 2004.
-
Abstract
- We carefully examined ESR and magnetic susceptibility around T s =128.7 K , at which the structural phase transition takes place, of m-MPYNN BF4 1 3 acetone. Both the ESR parameters and the magnetic susceptibility have a clear anomaly around Ts. The g-factor shows a clear shift around Ts independently of the shape of the samples. It possibly corresponds to the shift of MPYNN molecules accompanied by the structural phase transition. Moreover, the Weiss temperature is obtained to be +22.7 K above Ts and +3.42 K below Ts, respectively. These results suggest that the lattice distortion plays an important role on the low-temperature spin-gap state.
Details
- ISSN :
- 03048853
- Database :
- OpenAIRE
- Journal :
- Journal of Magnetism and Magnetic Materials
- Accession number :
- edsair.doi...........28dc13bf0b907dd184e648d88ae2287b
- Full Text :
- https://doi.org/10.1016/j.jmmm.2003.12.480