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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/096/06/0565-0580

    • Keywords

       

      EPR ; NMR ; lineshapes; powder; amorphous materials

    • Abstract

       

      A survey is made of the theory and applications ofEPR andNMR absorption lineshapes observed in powdered and amorphous materials. The ‘spin Hamiltonian’ and ‘resonance condition’ formalisms are reviewed, andepr andnmr lineshapes are discussed which typify the singularity characteristics in powdered materials. In the amorphous or ‘glassy’ state, the measurable spin resonance parameters often have to be viewed as being ‘randomly distributed’ according to a probability density function. Several recent probability-theory based approaches to lineshape computation for modelling the amorphous state are discussed.

    • Author Affiliations

       

      P Raghunathan1 S C Sivasubramanian1

      1. Department of Chemistry, Indian Institute of Technology, Kanpur - 208 016, India
    • Dates

       
  • Journal of Chemical Sciences | News

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