13C and 1H spin-lattice relaxation in amorphous hydrogenated carbon

D. Arčon, J. Seliger, R. Blinc, I. Pocsik, M. Koos

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Abstract

The temperature dependences of the 13C and 1H magnetization recovery and spin-lattice relaxation times have been measured in amorphous hydrogenated carbon (a-C : H). The observed short and nearly temperature independent proton and 13C spin-lattice relaxation times demonstrate that the dominant spin-lattice relaxation mechanism is spin diffusion to paramagnetic impurities. The fact that the magnetization recovery curves clearly deviate from the single exponential form demonstrates that the paramagnetic centers aggregate in clusters so that the unpaired electron distribution in a-C : H is strongly inhomogeneous.

Original languageEnglish
Pages (from-to)349-352
Number of pages4
JournalSolid State Communications
Volume107
Issue number7
DOIs
Publication statusPublished - Jul 9 1998

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Keywords

  • A. disordered systems
  • E. nuclear resonances

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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