Preparation and electrical properties of KCa2-xLaxNb3O10

Daisuke Hamada; Masahiko Machida; Yoshiyuki Sugahara; Kazuyuki Kuroda

doi:10.1039/JM9960600069

Preparation and electrical properties of KCa_2-xLa_xNb₃O₁₀

Daisuke Hamada, Masahiko Machida, Yoshiyuki Sugahara^*, Kazuyuki Kuroda

^*この研究の対応する著者

先進理工学部

研究成果: Article › 査読

13 被引用数 (Scopus)

抄録

Electron-doped layered perovskite KCa_2-xLa_xNb₃O₁₀ was prepared from KNbO₃, Nb₂O₅, Nb, La₂O₃ and KCa₂Nb₃O₁₀ at 1200°C for 10 h under Ar. Essentially single-phase KCa_2-xLa_xNb₃O₁₀ with plate-like morphology was obtained with 0≤x≤0.3, and lattice parameters increased with increasing x. All the La-doped products showed semiconducting behaviour. Linear (log ρ)-T relationships were clearly observed, but the resistivity behaviour deviates from the linear relationship at lower temperatures. A possible conduction mechanism is discussed.

本文言語	English
論文番号	5/05248C
ページ（範囲）	69-72
ページ数	4
ジャーナル	Journal of Materials Chemistry
巻	6
号	1
DOI	https://doi.org/10.1039/JM9960600069
出版ステータス	Published - 1996 1月

ASJC Scopus subject areas

化学 (全般)
材料化学

文献へのアクセス

10.1039/JM9960600069

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引用スタイル

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abstract = "Electron-doped layered perovskite KCa2-xLaxNb3O10 was prepared from KNbO3, Nb2O5, Nb, La2O3 and KCa2Nb3O10 at 1200°C for 10 h under Ar. Essentially single-phase KCa2-xLaxNb3O10 with plate-like morphology was obtained with 0≤x≤0.3, and lattice parameters increased with increasing x. All the La-doped products showed semiconducting behaviour. Linear (log ρ)-T relationships were clearly observed, but the resistivity behaviour deviates from the linear relationship at lower temperatures. A possible conduction mechanism is discussed.",

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N2 - Electron-doped layered perovskite KCa2-xLaxNb3O10 was prepared from KNbO3, Nb2O5, Nb, La2O3 and KCa2Nb3O10 at 1200°C for 10 h under Ar. Essentially single-phase KCa2-xLaxNb3O10 with plate-like morphology was obtained with 0≤x≤0.3, and lattice parameters increased with increasing x. All the La-doped products showed semiconducting behaviour. Linear (log ρ)-T relationships were clearly observed, but the resistivity behaviour deviates from the linear relationship at lower temperatures. A possible conduction mechanism is discussed.

AB - Electron-doped layered perovskite KCa2-xLaxNb3O10 was prepared from KNbO3, Nb2O5, Nb, La2O3 and KCa2Nb3O10 at 1200°C for 10 h under Ar. Essentially single-phase KCa2-xLaxNb3O10 with plate-like morphology was obtained with 0≤x≤0.3, and lattice parameters increased with increasing x. All the La-doped products showed semiconducting behaviour. Linear (log ρ)-T relationships were clearly observed, but the resistivity behaviour deviates from the linear relationship at lower temperatures. A possible conduction mechanism is discussed.

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