Research Journal of Physics1819-3463xxxx-xxxxScience International10.3923/rjp.2015.11.20PandeyA.K. RaiH.K. PandeyB.K. SrivastavaAbhay P. SinghC.K. 1201591To predict the most suitable EOS for the analysis of real compression behavior of carbon nanotube bundles, single carbon nanotubes and Graphite we have used Suzuki, Shanker, Tait and Murnaghan Equation of states. The analysis of computed results suggests that the Suzuki formulation is not capable of explaining the compression behavior of nanomaterials at higher pressure. Shanker formulation gives slightly better results of volume compression at different pressure than the Suzuki formulation but the results obtained by Taits and Murnaghan EOS are in good agreement to the experimental data for nanotube bundle and individual carbon nanotubes in the entire range of pressure. Surprisingly it is observed that only Murnaghan formulation gives the better agreement with the experimental results for graphite than Taits formulation. Thus it is concluded that, the well known and widely used Murnaghan EOS is still most suitable and valid for the bulk as well as nanomaterials. The present study also reveals the fact that individual carbon nanotubes are less compressible than bundles of carbon nanotubes.]]>Anderson, O.L.,1995Pages: 405Pages: 405Birch, F.,195257227286Borelius, G.,19581958New York, USA.,pp: 65-94Born, M. and K. Huang,1995Chandra, J., P.K. Bhatt and K. Kholiya,20132013Devlal, K. and K. Kholiya,200680801805Dresselhaus, M.S., G. Dresselhaus and R. Saito,199533883891Dresselhaus, M.S., G. Dresselhaus and P.C. Eklund,1996Pages: 965Pages: 965Hanfland, M., H. Beister and K. Syassen,19891989Hayward, A.T.J.,196718965965Helffrich, G.,1999116133136Hernandez, E., C. Goze, P. Bernier and A. Rubio,199968287292Hochella, M.F., S.K. Lower, P.A. Maurice, R.L. Penn, N. Sahai, D.L. Sparks and B.S. Twining,200831916311635Iijima, S.,19913545658Kandpal, D., K.Y. Singh and B.R.K. Gupta,20040) at room temperature for the solids: Copper and lead as prototypes.]]>78393395Lu, J.P.,19975816491652Lu, J.P.,19971997Van Lier, G., C. van Alsenoy, V. van Doren and P. Geerlings,2000326181185Murnaghan, F.D.,193759235260Murnaghan, F.D.,194430244251Reich, S., J. Maultzsch, C. Thomsen and P. Ordejon,20022002Rydberg, R.,193273376385Sanchez-Portal, D., E. Artacho, J.M. Soler, A. Rubio and P. Ordejon,1999Ab initio structural, elastic and vibrational properties of carbon nanotubes.]]>1999San-Miguel, A.,200635876889Schilling, J.S.,199859553568Shanker, J., S.S. Kushwah and P. Kumar,19972337883Shanker, J., B. Singh and S.S. Kushwah,1997229419420Singh, M., P.P. Singh, B.R. Gupta and M. Kumar,200133199206Stacey, F.D., B.J. Brennan and R.D. Irvine,19814189232Suzuki, I.,197523145159Suzuki, I., S.I. Okajima and K. Seya,1979276369Taravillo, M., V.G. Baonza, J.E. Rubio, J. Nunez and M. Caceres,20026317051715Vigolo, B., A. Penicaud, C. Coulon, C. Sauder and R. Pailler et al.,200029013311334Wang, K. and R.R. Reeber,199823101137Yakobson, B.I., C.J. Brabec and J. Bernholc,19961996Kushwah, S.S. and J. Shanker,1998364648