Abstract
Nanocrystalline nickel oxide powders were calcined at 300, 600 and 900°C and pore structure evolution was followed by small angle neutron scattering (SANS). Pore size distributions at two widely separated size ranges have been revealed. Shrinkage of larger-sized pore with reduction in polydispersity has been observed with increasing heat treatment temperature. The pore structures at various heat treatment temperatures do not scale. This has been attributed to the grain boundary diffusion leading to an asymmetric shrinkage of the pores.
Similar content being viewed by others
References
B Pejova, T Kocareva, M Najdoski and I Grzdanov, Appl. Surf. Sci. 165, 271 (2000)
W D Kingery, H K Bowden and D R Uhlmann, Introduction to ceramics, second ed., Wiley Series on the Science and Technology of the Materials (John Wiley & Sons, New York, 1976) p. 1032
D Sen, A K Patra, S Mazumder and S Ramanathan, J. Alloys Compounds 340, 236 (2002)
D Sen, T Mahata, A K Patra, S Mazumder and B P Sharma, J. Phys.: Condens. Matter 16, 6229 (2004)
S Mazumder, D Sen, S K Roy, M Hainbuchner, M Baron and H Rauch, J. Phys.: Condens. Matter 13, 5089 (2001)
S Mazumder, D Sen, T Sarvanan and P R Vijayraghavan, J. Neutron Res. 9, 39 (2001)
S Mazumder, D Sen, I S Batra, R Tewari, G K Dey, S Banerjee, A Sequeira, H Amentisch and S Bernstorff, Phys. Rev. B60, 822 (1999)
K Tsuruta, A Omeltchenko, R K Kalia and P Vashishta, Europhys. Lett. 33(6), 441 (1996)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Bahadur, J., Sen, D., Mazumder, S. et al. Effect of heat treatment on pore structure in nanocrystalline NiO: A small angle neutron scattering study. Pramana - J Phys 71, 965–970 (2008). https://doi.org/10.1007/s12043-008-0208-8
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12043-008-0208-8