Polycrystalline samples of A1-xA′xNbO3 (A = Na+, K+; A′ = La3+, Sr2+) were prepared by solid-state reactions and the relationship between the structure and electrical properties was examined. Single-phase products were obtained for Na1-xLaxNbO3 (x≤0.1), K1-xLaxNbO3 (x≤0.15), Na1-xSrxNbO3 (x≤0.3), and K1-xSrxNbO3 (x≤0.5). The structures of the sodium-containing compounds and potassium-containing compounds were indexed according to a pseudocubic and cubic symmetry, respectively. The resistivity measurements showed semiconductive behavior for the lanthanum-containing samples. The strontium-containing samples showed semiconducting properties for x≤0.2, while a transition to metallic conduction at low temperature was observed for x>0.2.
|ジャーナル||Materials Research Society Symposium - Proceedings|
|出版ステータス||Published - 1997 1月 1|
|イベント||Proceedings of the 1996 MRS Fall Symposium - Boston, MA, USA|
継続期間: 1996 12月 2 → 1996 12月 5
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