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- W3190380892 abstract "采用传统固相反应法合成了双掺杂La 0.67 Ca 0.33- x Sr x MnO 3 ( x =0, 0.05, 0.15)粉体, 研究了烧结温度对La 0.67 Ca 0.33- x Sr x MnO 3 ( x =0, 0.05, 0.15)结构、微观形貌和金属-绝缘体相转变温度的影响规律。结果表明: 烧结温度的升高对微观形貌及结构影响较小, 双掺杂有效改善了材料体系的相转变温度。当烧结温度为1400℃, 掺杂量 x =0增加至 x =0.05时, 材料体系为正交相, 相转变温度从–20℃升高至6℃。掺杂量继续增加至 x =0.15, 材料体系从正交相转变为六方相, 相转变温度升高至17℃。当掺杂量相同时, 相转变温度随烧结温度的升高而升高。具有上述智能相变特性的材料体系可以作为长寿命卫星主动热控技术的重要候选材料。" @default.
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- W3190380892 date "2016-08-20" @default.
- W3190380892 modified "2023-10-06" @default.
- W3190380892 title "烧结温度对La 0.67 Ca 0.33- x Sr x MnO 3 结构及电学性能的影响" @default.
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