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Phase Equilibrium in the System Ln-Mn-O at 1100℃ : IX.Ln=Er and Tm
https://niit.repo.nii.ac.jp/records/155
https://niit.repo.nii.ac.jp/records/1554caf8f79-a2ef-4bda-82b3-a954f4a2bae4
名前 / ファイル | ライセンス | アクション |
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niit_12_1-12.pdf (420.4 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2012-08-07 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Phase Equilibrium in the System Ln-Mn-O at 1100℃ : IX.Ln=Er and Tm | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | Phase equilibrium | |||||
キーワード | ||||||
主題 | Thermogravimetry | |||||
キーワード | ||||||
主題 | Erbium-manganese oxide | |||||
キーワード | ||||||
主題 | Thulium manganese oxide | |||||
キーワード | ||||||
主題 | Gibbs energy | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
著者 |
Kitayama, Kenzo
× Kitayama, Kenzo× Shioya, Natsuko× Iura, Motohiro× Ikeda, Syunsuke× Saeki, Naoki× Ishizawa, Yuzuru |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Phase equilibrium was established in a Ln-Mn-O (Ln=Er and Tm) system at 1100℃ with the oxygen partial pressure ranging from ?log (P_o2/atm) = to 12.00, and phase diagrams for the corresponding Ln_2O_3-MnO-MnO_2 system at 1100℃ were constructed. Stable Er_2O_3, MnO, Mn_3O_4, and ErMnO_3 phased were found in the Er-Mn-O system, and stable Tm_2O_3, MnO, Mn_3O_4, and TmMnO_3 phases were found in the Tm-Mn-O system. LnMn_2O_5, Ln_2Mn_2Mn_O_7, Ln_2MnO_4, Mn_2O_3, and MnO_2 were not found in either system. Nonstoichiometric ranges were found in both LnMnO_3 phases, with the composition of LnMnO_3 represented as functions of log (Po_2/atm), No/N_ErMnO3= 2.68×10^-3 (log Po_2)-0.008 and No/N_TmMnO3 =2.53×10^-3 log(Po_2)-0.005 The activities of the components in a solid solution were calculated from the both equations. The lattice constants of ErMnO_3 and TmMnO_3 quenched in air were determined. The standard Gibbs energy changes of the reaction, 1/2 Ln_2O_3 + MnO + 1/4 O_2 = LnMnO_3, appearing in the phase diagrams were also calculated. The relationship between the tolerance factors (t) of ErMnO_3, TmMnO_3 andΔG^0 (hexa) = -6.426×10^2t + 5.406×10^2, which was previously obtained. | |||||
書誌情報 |
新潟工科大学研究紀要 巻 12, p. 1-12, 発行日 2007-12 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1342-792X | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN10590360 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
出版者 | ||||||
出版者 | 新潟工科大学 |