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Anneal temperature effect on crystallite size and electric conductivity of LiMn$$_{2}$$O$$_{4}$$

LiMn$$_{2}$$O$$_{4}$$の結晶子径と電気伝導度に対するアニール温度効果

Basar, K.*; Xianglian*; Siagian, S.*; 大原 宏太*; 佐久間 隆*; 高橋 東之*; 阿部 修実*; 井川 直樹 ; 石井 慶信*

Basar, K.*; Xianglian*; Siagian, S.*; Ohara, Kota*; Sakuma, Takashi*; Takahashi, Haruyuki*; Abe, Osami*; Igawa, Naoki; Ishii, Yoshinobu*

ナノサイズLiMn$$_{2}$$O$$_{4}$$の作製にLiOHとMnO$$_{2}$$の固相反応法によって成功した。本合成ナノ試料における、中性子散乱法によるScherrer法から評価した平均結晶子径や伝導度測定によって決定した活性化エネルギーはアニール温度の上昇によって増加することなどを明らかにした。

Nanosized LiMn$$_{2}$$O$$_{4}$$ has been successfully prepared by solid state reaction of LiOH and MnO$$_{2}$$. 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 LiMn$$_{2}$$O$$_{4}$$ 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.

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