| Nd0.67M0.33MnO3(M=Mg,Ca,Sr,Ba)的制备、结构与电性(英文) | |
| PREPARATION， STRUCTURE AND ELECTRICAL PROPERTIES OF Nd0.67M0.33MnO3(M=Mg,Ca,Sr,Ba) | |
| 摘要: 本文通过共沉淀工艺合成了系列陶瓷化合物Nd0.67M0.33MnO3(M=Mg,Ca,Sr,Ba)。与传统的陶瓷法相比，其成相温度降低了400℃。经X射线衍射分析表明，所得化合物为立方钙钛矿结构，各化合物的成相温度范围受碱土二价金属离子(M2+)的影响。样品的四极法电阻率测试结果表明：M2+的离子半径对样品的导电性起决定作用，并提出了反铁磁性(AF)与铁磁性(AF)等磁性结构假设，解释了该系列化合物的导电性。 | |
| 关键词: 共沉淀工艺 钙钛矿结构 导电性 | |
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| Abstract: The bulk ceramic compounds Nd0.67M0.33MnO3(M=Mg,Ca,Sr,Ba) were prepared by the coprecipitation route. Compared with the conventional ceramic technique, the temperature at which the compounds were synthesized has been reduced by 400℃. The results of X-ray diffraction show all the samples are cubic and the phaseformed temperature range is affected by the divalent alkali-earth ion (M2+). The electrical measurements by standard four-probe method indicate the radius of M is crucial to the electrical conduction of sample. | |
| Keywords: coprecipitation method perovskite-type phase electrical properties | |
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| 李亚栋,章建辉,段镶峰,朱长飞,刘卫,钱逸泰.Nd0.67M0.33MnO3(M=Mg,Ca,Sr,Ba)的制备、结构与电性(英文)[J].无机化学学报,1997,13(4):400-405. | |
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