Abstract
KSr2Nb5O15 (KSN) particles with high aspect ratios (>50) were synthesized by a two-step molten salt synthesis from two kinds of seeds. The effect of KSN seed on the particles size and morphology was investigated, and the crystal growth mechanism was discussed. The results show that only seeds with (001) surface act as a site for further growth. KSN particles synthesized by the two-step MSS preserved the shape of seed and had a high aspect ratio. When the rod-like seed prepared by a molten salt synthesis was used, the aspect ratio of obtained particles increased to a maximum value (40–60μm in length and 0.5–1μm in diameter) at the seed content of 10wt%, then decreased with the increasing of seed content. The product is an ideal template for fabricating fiber with tungsten bronze structure by a combination of the co-extrusion and template grain growth process.
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