烧结温度对La0.67Ca0.33-xSrxMnO3结构及电学性能的影响
文献类型:期刊论文
作者 | Sun Shu-Miao; Yu Yang; Mi Le; Yu Yun; Cao Yun-Zhen; Song Li-Xin |
刊名 | JOURNAL OF INORGANIC MATERIALS
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出版日期 | 2016-09-20 |
卷号 | 31期号:9页码:943-947 |
关键词 | La0.67Ca0.33-xSrxMnO3 ceramic sintering temperature The metal-insulator phase transition temperature |
其他题名 | Effect of Sintering Temperature on Structure and Electric Performance of La0.67Ca0.33-xSrxMnO3 Ceramic |
中文摘要 | 采用传统固相反应法合成了双掺杂La0.67Ca0.33-xSrxMnO3(x=0, 0.05, 0.15)粉体, 研究了烧结温度对La0.67Ca0.33-xSrxMnO3(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。 |
英文摘要 | Double-doped La0.67Ca0.33-xSrxMnO3(x=0, 0.05, 0.15) powders were synthesized by traditional solid-state reaction method. Effects of sintering temperature on structure, micro morphology and metal-insulator phase transition temperature of La0.67Ca0.33-xSrxMnO3 ceramic were systemically studied. The results showed that sintering temperature had little influence on crystallinity or micro morphology of as-prepared ceramic, while double-doping effectively changed the phase transition temperature of the ceramics. When the ceramics sintered at 1400 degrees C the metal-insulator phase transition temperature increased from -20 degrees C to 6 degrees C and the ceramics stabilized in orthorhombic structure as the doping level varing from x=0 to x=0.05. At the doping level x=0.15, the crystal structure changed from rhombohedral to orthorhombic and the metal-insulator transition temperature was 17 degrees C. Under the same doping concentration, the metal-insulator phase transition temperature of the ceramics increased with the increase of sintering temperature. The above mentioned material may be an ideal candidate for active thermal control technology of long life satellites. |
WOS标题词 | Science & Technology ; Technology |
类目[WOS] | Materials Science, Ceramics |
研究领域[WOS] | Materials Science |
关键词[WOS] | THERMOCHROMIC PROPERTIES ; LA1-XSRXMNO3 COMPOUNDS ; INFRARED PROPERTIES ; GRAIN-BOUNDARIES ; MAGNETORESISTANCE ; LA0.7CA0.3MNO3 ; CA |
收录类别 | SCI |
语种 | 中文 |
WOS记录号 | WOS:000383397000007 |
源URL | [http://ir.sic.ac.cn/handle/331005/22834] ![]() |
专题 | 上海硅酸盐研究所_特种无机涂层重点实验室_期刊论文 |
作者单位 | Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Coating Mat CAS, Shanghai 200050, Peoples R China |
推荐引用方式 GB/T 7714 | Sun Shu-Miao,Yu Yang,Mi Le,等. 烧结温度对La0.67Ca0.33-xSrxMnO3结构及电学性能的影响[J]. JOURNAL OF INORGANIC MATERIALS,2016,31(9):943-947. |
APA | Sun Shu-Miao,Yu Yang,Mi Le,Yu Yun,Cao Yun-Zhen,&Song Li-Xin.(2016).烧结温度对La0.67Ca0.33-xSrxMnO3结构及电学性能的影响.JOURNAL OF INORGANIC MATERIALS,31(9),943-947. |
MLA | Sun Shu-Miao,et al."烧结温度对La0.67Ca0.33-xSrxMnO3结构及电学性能的影响".JOURNAL OF INORGANIC MATERIALS 31.9(2016):943-947. |
入库方式: OAI收割
来源:上海硅酸盐研究所
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