双钙钛矿型La2CuMnO6的化学溶液法合成和结构表征

材料导报, 2009, 23(4): 96-105.

双钙钛矿型La2CuMnO6的化学溶液法合成和结构表征

马高峰 ^1, , 张国防 ^2, , 杨伟波 ^3, , 李成山 ^4, , 阎果 ^5, , 卢亚锋 ^6,

1.陕西师范大学化学与材料科学学院应用表面与胶体化学教育部重点实验室,西安,710062

2.陕西师范大学化学与材料科学学院应用表面与胶体化学教育部重点实验室,西安,710062

3.陕西师范大学化学与材料科学学院应用表面与胶体化学教育部重点实验室,西安,710062

4.西北有色金属研究院,西安,710016

5.西北有色金属研究院,西安,710016

6.西北有色金属研究院,西安,710016

基金项目: 国家高技术研究发展计划(863计划)(2006AA03Z204)

关键词： La2CuMnO6 , 化学溶液法 , 合成 , 结构表征

Chemical Solution Synthesis and Structural Characterization of Double Perovskite-type Oxide La2CuMnO6

利用化学溶液法制备了La2CuMnO6氧化物粉体和块材,并与固态反应法所制得的样品作了比较.利用热重分析(TG)对化学溶液法前驱体混合物的热分解过程进行研究,确定了预分解温度;利用X射线衍射(XRD)和扫描电子显微镜(SEM)对两种方法合成的La2CuMnO6氧化物的相组成和形貌结构进行了表征.结果表明,选择合适的前驱体La(CH3COO)3·1.5H2O、Cu(CH3COO)2·1.0H2O、Mn(CH3COO)2·4.0H2O,利用化学溶液法可以在较低温度和较短时间热处理得到单相的La2CuMnO6氧化物,其晶粒平均尺寸约为200nm.

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