[[1] Wentzcovitch R.M., Karki B.B., Cococcioni M., De Gironcoli S., Phys. Rev. Lett., 92 (2004), 018501. http://dx.doi.org/10.1103/PhysRevLett.92.01850110.1103/PhysRevLett.92.01850114754029]Search in Google Scholar
[[2] Militzer B., Gygi F., Galli G., Phys. Rev. Lett., 91 (2003), 265503. http://dx.doi.org/10.1103/PhysRevLett.91.26550310.1103/PhysRevLett.91.26550314754064]Search in Google Scholar
[[3] Rozale H., Bouhafs B., Ruteran P., Superlattice Microst., 42 (2007), 165. http://dx.doi.org/10.1016/j.spmi.2007.04.00710.1016/j.spmi.2007.04.007]Search in Google Scholar
[[4] Souadkia M., Bennecer B., Kalarasse F., J. Phys. Chem. Solids, 73 (2012), 129. http://dx.doi.org/10.1016/j.jpcs.2011.10.02310.1016/j.jpcs.2011.10.023]Search in Google Scholar
[[5] Häussermann U., Simak S.I., Ahuja R., Johansson B., Phys. Rev. Lett., 90 (2003), 065701. http://dx.doi.org/10.1103/PhysRevLett.90.06570110.1103/PhysRevLett.90.06570112633302]Search in Google Scholar
[[6] Fuchs M., Bockstede M., Pehlke E., Scheffler M., Phys. Rev. B, 57 (1998), 2134. http://dx.doi.org/10.1103/PhysRevB.57.213410.1103/PhysRevB.57.2134]Search in Google Scholar
[[7] Guerrero-moreno R.J., Takeuchi N., Phys. Rev. B, 66 (2002), 205205. http://dx.doi.org/10.1103/PhysRevB.66.20520510.1103/PhysRevB.66.205205]Search in Google Scholar
[[8] Peng F., Liu Q., Fu H., Yang X., Solid State Commun., 148 (2008), 6. http://dx.doi.org/10.1016/j.ssc.2008.07.02410.1016/j.ssc.2008.07.024]Search in Google Scholar
[[9] Liu H., Mao H., Maddury M., Ding Y., Meng Y., Häusermann D., Phys. Rev. B, 70 (2004), 094114. http://dx.doi.org/10.1103/PhysRevB.70.09411410.1103/PhysRevB.70.094114]Search in Google Scholar
[[10] Li G.-Q., Lu C., Xiao S.-W., Yang X.-Q., Wang A.-H., Wang L., Tan X.-M., High Pressure Res., 30 (2010), 679. http://dx.doi.org/10.1080/08957959.2010.53839310.1080/08957959.2010.538393]Search in Google Scholar
[[11] Schleife A., Fuchs F, Furthmuller J., Bechstedt F., Phys. Rev. B, 73 (2006), 245212. http://dx.doi.org/10.1103/PhysRevB.73.24521210.1103/PhysRevB.73.245212]Search in Google Scholar
[[12] Gulino A., Dapporto P., Rossi P., Fragala I., Chem. Mater., 14 (2002), 1441. http://dx.doi.org/10.1021/cm011294610.1021/cm0112946]Search in Google Scholar
[[13] Jog K.N., Singh R.K., Sanyal S.P., Phys. Rev. B, 31 (1985), 6047. http://dx.doi.org/10.1103/PhysRevB.31.604710.1103/PhysRevB.31.60479936603]Search in Google Scholar
[[14] Liu L.G., Bassett W.A., J. Geophys. Res., 77 (1972), 4934. http://dx.doi.org/10.1029/JB077i026p0493410.1029/JB077i026p04934]Search in Google Scholar
[[15] Sato Y., Jeanloz R., Geophys J. Res., 86 (1981), 11773. http://dx.doi.org/10.1029/JB086iB12p1177310.1029/JB086iB12p11773]Search in Google Scholar
[[16] Bhardwaj P., Singh S., Gaur N.K., Mater. Res. Bull., 44 (2009), 1366. http://dx.doi.org/10.1016/j.materresbull.2008.12.01210.1016/j.materresbull.2008.12.012]Search in Google Scholar
[[17] Khan I., Ahmad I., Amin B., Murtaza G., Ali Z., Physica B, 406 (2011), 2509. http://dx.doi.org/10.1016/j.physb.2011.03.04210.1016/j.physb.2011.03.042]Search in Google Scholar
[[18] Singh R.K., Phys. Rep., 85 (1982) 259; Singh R.K., Singh S., Phys. Rev. B, 45 (1992), 1019. http://dx.doi.org/10.1016/0370-1573(82)90020-5]Search in Google Scholar
[[19] Bhardwaj P., Singh S., Mater. Chem. Phys., 125 (2011), 440. http://dx.doi.org/10.1016/j.matchemphys.2010.10.03410.1016/j.matchemphys.2010.10.034]Search in Google Scholar
[[20] Bhardwaj P., Singh S., Cet. Eur. J. Chem., 8(1) (2010), 126. http://dx.doi.org/10.2478/s11532-009-0117-910.2478/s11532-009-0117-9]Search in Google Scholar
[[21] Elliot R.J., Leath R.A., IIE (1996), 386. ]Search in Google Scholar
[[22] Bhardwaj P., Singh S., Gaur N.K., Mater. Res. Bull., 44 (2009), 1366. http://dx.doi.org/10.1016/j.materresbull.2008.12.01210.1016/j.materresbull.2008.12.012]Search in Google Scholar
[[23] Bhardwaj P., Singh S., Phys. Status Solidi B, 249 (2012), 38. http://dx.doi.org/10.1002/pssb.20114704210.1002/pssb.201147042]Search in Google Scholar
[[24] Bhardwaj P., Singh S., Gaur N.K., J. Mol. Struct., 897 (2009), 95. http://dx.doi.org/10.1016/j.theochem.2008.11.03310.1016/j.theochem.2008.11.033]Search in Google Scholar
[[25] Bhardwaj P., Singh S., Measurement, 46 (2013), 1161. http://dx.doi.org/10.1016/j.measurement.2012.11.00410.1016/j.measurement.2012.11.004]Search in Google Scholar