Synthesis of Stoichiometric SrTiO3 and Its Carrier Doping from Air-Stable Bimetallic Complexes
Synthesis of Stoichiometric SrTiO3 and Its Carrier Doping from Air-Stable Bimetallic Complexes
复制标题
空气稳定双金属配合物化学计量SrTiO3的合成及其载流子掺杂
DOI：
10.1021/acs.inorgchem.0c03457
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发表时间：
2021
影响因子：
4.6
通讯作者：
Fukumura Tomoteru
中科院分区：
文献类型：
--
作者：
Oyeka Ebube E.;Oka Daichi;Kwon Eunsang;Fukumura Tomoteru
我们证明了钙钛矿氧化物SrTiO 3的合成与理想的阳离子化学计量和均匀的La掺杂使用空气稳定的Sr-Ti和La-Ti过氧配合物与1：1的阳离子比。通过热分解这些配合物，成功地合成了相纯的SrTiO 3，La 2 Ti 2 O 7和LaTiO 3。通过将Sr-Ti和La-Ti配合物在酸溶液中混合，然后热分解，得到La掺杂的SrTiO 3。La掺杂的SrTiO 3的晶格常数和电导表现出系统的化学趋势。不仅这些块体多晶，而且阳离子化学计量SrTiO 3外延薄膜生长与原子级平坦的表面从Sr-Ti络合物。
We demonstrate the synthesis of perovskite oxide SrTiO3with ideal cation stoichiometry and homogeneous La doping using air-stable Sr–Ti and La–Ti bimetallic peroxo complexes with a 1:1 cation ratio. Phase-pure SrTiO3, La2Ti2O7, and LaTiO3were successfully synthesized by thermal decomposition of those complexes. La-doped SrTiO3was obtained by mixing the Sr–Ti and La–Ti complexes in an acid solution, followed by thermal decomposition. La-doped SrTiO3showed systematic chemical trends in the lattice constant and electrical conduction. Not only those bulk polycrystals but also cation-stoichiometric SrTiO3epitaxial thin films were grown with an atomically flat surface from the Sr–Ti complex.