Thermoelastic Behavior of Orientationally Disordered Ammonium Iodide

Alpana Tiwari


We have investigated the second order elastic constants of orientationally disordered NH4I using an Extended Three Body Force Shell Model (ETSM) in the temperature range 250K≤T≤350K.The second order elastic constants (C11, C12 and C44) obtained by us show an anomalous behaviour with the variation of temperature. The variation of the second order elastic constants with temperature is in good agreement with the measured data.

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ISSN (Paper)2224-719X ISSN (Online)2225-0638

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