๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Electron spin resonance and the structure of carbon fibers

โœ Scribed by Janice Breedon Jones; L.S. Singer

Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
724 KB
Volume
20
Category
Article
ISSN
0008-6223

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โœฆ Synopsis

The ESR properties of 3000ยฐC heat treated fibers derived from mesophase pitch and PAN have been measured and compared with computer-simulated spectra. Conduction electron motional averaging was observed in the PAN-and pitch-based fibers with domains small in the transverse direction. When perpendicular to the applied field, pitch-based fibers with large transverse domains exhibited a complex spectrum indicating no motional averaging by the conduction electrons. Computer-simulated spectra were in agreement with experiment and were useful in the determination of "single crystallite" ESR parameters. The relationship between ESR behavior and fiber structure is discussed.

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