Anneal Temperature Effect on Crystallite Size and Electric Conductivity of LiMn2O4

Khairul Basar (Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Indonesia)
Xianglian Xianglian (Institute of Applied Beam Science, Ibaraki University, Hitachi 316-8511, Japan)
Sainer Siagian (Institute of Applied Beam Science, Ibaraki University, Hitachi 316-8511, Japan)
Kouta Ohara (Institute of Applied Beam Science, Ibaraki University, Hitachi 316-8511, Japan)
Takashi Sakuma (Institute of Applied Beam Science, Ibaraki University, Hitachi 316-8511, Japan)
Haruyuki Takahashi (Institute of Applied Beam Science, Ibaraki University, Hitachi 316-8511, Japan)
Osami Abe (Faculty of Engineering, Ibaraki University, Hitachi 316-8511, Japan)
Naoki Igawa (Quantum Beam Science Directorate, Japan Atomic Energy Agency, Tokai 319-1195, Japan)
Yoshinobu Ishii (Quantum Beam Science Directorate, Japan Atomic Energy Agency, Tokai 319-1195, Japan)

Indonesian Journal of Physics (IJP)
Vol 20 No 1 (2009): Vol. 20 No. 1, January 2009

Powder samples of LiMn2O4 have been prepared by solid state reaction of LiOH and MnO2. Neutron scattering experiments at room temperature and conductivity measurement have been performed on the samples. Anneal temperature effect on the crystallite size and electric conductivity of LiMn2O4 is analyzed. The average crystallite size is obtained from the full width at half maximum (FWHM) of Bragg lines using Scherrer equation. The average crystallite size increases with the increase of anneal temperature. Activation energy and conductivity prefactor increase with anneal temperature.