Back to Search Start Over

ESR study on the distorted kagome antiferromagnet m-MPYNN BF4 acetone

ESR study on the distorted kagome antiferromagnet m-MPYNN BF4 acetone

Authors :
Wataru Fujita
Takashi Kambe
Kokichi Oshima
Kunio Awaga
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