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Phase transformation and electrical resistivity of tetracyanoethylene under pressure

  • Condensed Matter Physics
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Abstract

This paper reports the phase transformation behaviour of tetracyanoethylene (TCNE) under pressure as revealed by AC electrical resistivity, its time evolution and X-ray diffraction studies. An irreversible transformation from monoclinic to cubic phase occurs at 2.1±0.1 GPa and is indicated by a sharp resistivity drop at this pressure. The time evolution of resistivity studies indicate that this transformation occurs via an intermediate phase having resistivity higher than either of the two crystalline phases. Finally, the kinetics of phase transformations obtained by time evolution of resistivity is compared with the X-ray studies on the pressure quenched TCNE.

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Authors and Affiliations

  1. Indira Gandhi Centre for Atomic Research, 603 102, Kalpakkam, India

    P Ch Sahu, K Govinda Rajan, Mohammad Yousuf, R Mukhopadhyay, S L Chaplot & K R Rao

  2. Bhabha Atomic Research Centre, 400 085, Trombay, Bombay, India

    R Mukhopadhyay, S L Chaplot & K R Rao

Authors
  1. P Ch Sahu
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  2. K Govinda Rajan
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  3. Mohammad Yousuf
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  4. R Mukhopadhyay
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  5. S L Chaplot
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  6. K R Rao
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Sahu, P.C., Rajan, K.G., Yousuf, M. et al. Phase transformation and electrical resistivity of tetracyanoethylene under pressure. Pramana - J Phys 33, 667–672 (1989). https://doi.org/10.1007/BF02845691

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  • DOI: https://doi.org/10.1007/BF02845691

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