Muon studies of spin dynamics in polyaniline

Pratt, FL; Ishida, K; Nagamine, K; Pattenden, PA; Jestadt, T; Chow, KH; Blundell, SJ; Hayes, W; Monkman, AP

Abstract

The muon is a valuable probe of spin excitations in polymers, as the muon implantation process itself generates a lest excitation whose dynamical properties can be studied via the evolution of the muon spin polarisation. We report here studies on undoped polyaniline in its emeraldine base form (PANI:EB). Characteristic field dependences and cutoff frequencies for the muon spin relaxation are observed which are related to the spin diffusion. One-dimensional diffusion is seen at low temperatures and at short probe times. The on chain diffusion is observed to have a weak metallic temperature dependence whereas the interchain diffusion is strongly activated and phenyl ring rotations are seen to have an important effect on the diffusion processes.

Citation

Pratt, F., Ishida, K., Nagamine, K., Pattenden, P., Jestadt, T., Chow, K., …Monkman, A. (1997). Muon studies of spin dynamics in polyaniline. Synthetic Metals, 84(1-3), 943-944

• Journal Article Type: Article
• Publication Date: 1997-01
• Journal: Synthetic Metals
• Print ISSN: 0379-6779
• Publisher: Elsevier
• Volume: 84
• Issue: 1-3
• Pages: 943-944
• Keywords: polyaniline and derivativesPOLYACETYLENE