J. Liu and D. P. Delo, Particle rearrangement during powder compaction, Metallurgical and Materials Transactions A, vol.46, issue.12, pp.3117-3124, 2001.
DOI : 10.1007/s11661-001-0186-7

C. L. Martin, D. Bouvard, and S. Shima, Study of particle rearrangement during powder compaction by the Discrete Element Method, Journal of the Mechanics and Physics of Solids, vol.51, issue.4, pp.667-693, 2003.
DOI : 10.1016/S0022-5096(02)00101-1

R. Chaim, R. Reshef, G. Liu, and Z. Shen, Low-temperature spark plasma sintering of NiO nanoparticles, Materials Science and Engineering: A, vol.528, issue.6, pp.2936-2940, 2010.
DOI : 10.1016/j.msea.2010.11.050

R. Chaim and M. Margulis, Densification maps for spark plasma sintering of nanocrystalline MgO ceramics, Materials Science and Engineering: A, vol.407, issue.1-2, pp.180-187, 2005.
DOI : 10.1016/j.msea.2005.07.024

T. Takeuchi, M. Tabuchi, H. Kageyama, and Y. Suyama, Preparation of Dense BaTiO3 Ceramics with Submicrometer Grains by Spark Plasma Sintering, Journal of the American Ceramic Society, vol.79, issue.67, pp.939-943, 1999.
DOI : 10.1111/j.1151-2916.1999.tb01857.x

X. Deng, X. Wang, H. Wen, A. Kang, Z. Gui et al., Phase Transitions in Nanocrystalline Barium Titanate Ceramics Prepared by Spark Plasma Sintering, Journal of the American Ceramic Society, vol.262, issue.1, pp.1059-1064, 2006.
DOI : 10.1063/1.1625106

K. P. Kumar, K. Keizer, A. J. Burggraaf, T. Okubo, H. Nagamoto et al., Densification of nanostructured titania assisted by a phase transformation, Nature, vol.358, issue.6381, pp.48-51, 1992.
DOI : 10.1038/358048a0

Y. I. Lee, J. Lee, S. Hong, and D. Kim, Preparation of nanostructured TiO2 ceramics by spark plasma sintering, Materials Research Bulletin, vol.38, issue.6, pp.925-930, 2003.
DOI : 10.1016/S0025-5408(03)00084-9

U. Anselmi-tamburini and J. E. Garay, Fundamental investigations on the spark plasma sintering/synthesis process, Materials Science and Engineering: A, vol.407, issue.1-2, pp.24-30, 2005.
DOI : 10.1016/j.msea.2005.06.066

R. Marder, R. Chaim, and C. Estournes, Grain growth stagnation in fully dense nanocrystalline Y2O3 by spark plasma sintering, Materials Science and Engineering: A, vol.527, issue.6, pp.1577-1585, 2010.
DOI : 10.1016/j.msea.2009.11.009

R. Chaim, A. Shlayer, and C. Estournes, Densification of nanocrystalline Y2O3 ceramic powder by spark plasma sintering, Journal of the European Ceramic Society, vol.29, issue.1, pp.91-98, 2009.
DOI : 10.1016/j.jeurceramsoc.2008.05.043

C. Suryanarayana and M. G. Norton, X-ray Diffraction, A Practical Approach, pp.223-236, 1998.

]. P. Zhang, A. Navrotsky, B. Guo, I. Kennedy, A. N. Clark et al., Energetics of Cubic and Monoclinic Yttrium Oxide Polymorphs:??? Phase Transitions, Surface Enthalpies, and Stability at the Nanoscale, The Journal of Physical Chemistry C, vol.112, issue.4, pp.932-938, 2008.
DOI : 10.1021/jp7102337

A. Camenzind, R. Strobel, and S. E. Pratsinis, Cubic or monoclinic Y2O3:Eu3+ nanoparticles by one step flame spray pyrolysis, Chemical Physics Letters, vol.415, issue.4-6, pp.193-197, 2005.
DOI : 10.1016/j.cplett.2005.09.002

F. W. Dynys and J. W. Halloran, Alpha Alumina Formation in Alum-Derived Gamma Alumina, Journal of the American Ceramic Society, vol.3, issue.4, pp.442-448, 1982.
DOI : 10.1016/0036-9748(68)90157-9

R. S. Mishra, S. H. Risbud, and A. K. Mukherjee, Influence of initial crystal structure and electrical pulsing on densification of nanocrystalline alumina powder, Journal of Materials Research, vol.68, issue.01, pp.86-89, 1998.
DOI : 10.1007/BF00549948