Observation of a plastic crystalline phase in solidMBBA

  • S. Arumugam
  • S. V. Bhat
  • N. Kumar
  • K. V. Ramanathan
  • R. Srinivasan
Special number in memory of the Late Prof. R. Srinivasan


Wideline and high resolutionNMR studies have been carried out inMBBA in its isotropic, nematic and solid phases. Isotropie and nematic spectra correspond to what has been reported earlier. In the solid phase, contrary to expectations, very intense narrow signals similar to signals of the isotropic phase have been observed for the first time at temperatures close to the solid ↔ nematic phase transition temperature. This indicates rapid reorientational or translational motion in the system. X-ray results however confirm the existence of translational order. The results are interpreted as indicative of the existence of a plastic crystalline phase inMBBA.


Liquid crystals MBBA plastic crystals nuclear magnetic resonance 


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Copyright information

© Indian Academy of Sciences 1985

Authors and Affiliations

  • S. Arumugam
    • 1
  • S. V. Bhat
    • 1
  • N. Kumar
    • 1
  • K. V. Ramanathan
    • 1
    • 2
  • R. Srinivasan
    • 1
  1. 1.Department of PhysicsIndian Institute of ScienceBangaloreIndia
  2. 2.Sophisticated Instruments FacilityIndian Institute of ScienceBangaloreIndia

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