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Electrical properties of KNbO{sub}3-BaTiO{sub}3 ceramics

机译：KNBO {SUB} 3-BATIO {SUB} 3陶瓷的电气特性

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Microstructures and electrical properties of KNbO{sub}3 (KN) ceramics with the addition of 0 - 10 mol.% BaTiO{sub}3 (BT) have been studied as potential PTCR materials. Samples were prepared using classic ceramic technology involving the calcination of a mixture of appropriate oxides and carbonates, followed by sintering in air. During sintering, solid solutions of BaTiO{sub}3 in KNbO{sub}3 were formed. Additions of BaTiO{sub}3to KNbO{sub}3 decreased the grain size and increased the density of the ceramics. Air-sintered samples were prepared in a semiconducting form by atmospheric reduction and subsequent reoxidation in order to engineer acceptor states at the grain boundaries. Preferential reoxidation of the grain boundaries resulted in the PTCR effect.
机译：KNO {Sub} 3（kN）陶瓷的微观结构和电性能，加入0-10mol.％BATIO {sub} 3（BT）作为潜在的PTCR材料。使用经典陶瓷技术制备样品，涉及煅烧适当氧化物和碳酸盐的混合物，然后在空气中烧结。在烧结过程中，形成了KNBO {SUB} 3中的BATIO {亚} 3的固体溶液。 BATIO {sub} 3的添加减少了晶粒尺寸并增加了陶瓷的密度。通过大气还原和随后的再氧化以半导体形式制备空气烧结样品，以便在晶界处工程师态。对晶界的优先再氧化导致PTCR效应。

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