文献类型：期刊文献

英文题名：Shape tuneable synthesis of perovskite structured rare-earth chromites RECrO3 via a mild hydrothermal method

作者：Wang, Shan[1];Wu, Xiaofeng[2];Yuan, Long[2];Zhang, Chenyang[3];Lu, Dayong[1]

第一作者：Wang, Shan

通讯作者：Lu, DY[1];Yuan, L[2]

机构：[1]Jilin Inst Chem Technol, Dept Mat Sci & Engn, 45 Chengde St, Jilin 132022, Peoples R China;[2]Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Jilin, Peoples R China;[3]Xinxiang Univ, Dept Chem & Chem Engn, Xinxiang 453003, Henan, Peoples R China

第一机构：Jilin Inst Chem Technol, Dept Mat Sci & Engn, 45 Chengde St, Jilin 132022, Peoples R China

通讯机构：[1]corresponding author), Jilin Inst Chem Technol, Dept Mat Sci & Engn, 45 Chengde St, Jilin 132022, Peoples R China;[2]corresponding author), Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Jilin, Peoples R China.

年份：2017

卷号：19

期号：43

起止页码：6436-6442

外文期刊名：CRYSTENGCOMM

收录：;Scopus(收录号：2-s2.0-85033216337);WOS:【SCI-EXPANDED(收录号:WOS:000414494700005)】；

基金：This work was supported by the "Thirteenth Five Year" Project (No. JJKH20170217KJ) of Science and Technology Research of the Education Department of Jilin Province, the projects of the National Natural Science Foundation of China (Grant No. 21271084) and of Jilin Province (20160101290JC), and the Changbai Mountain Scholars Distinguished Professors (2015047).

语种：英文

摘要：Controllable synthesis of perovskite structured oxides with well-defined facets is a challenging but important route for crystal shape and facet dependent applications. In this paper, we report a urea-modified hydrothermal method for shape tuneable growth of perovskite structured rare-earth chromite (RECrO3) crystals. By adjusting the concentration of urea, continuous shape evolution processes of LaCrO3, PrCrO3 and NdCrO3 were found, such as transformation of LaCrO3 from cubic to truncated cubic and spherical crystals, PrCrO3 from pseudo-cubic to truncated parallelepiped plate twin crystals, and NdCrO3 from parallelepiped plates to their truncated analogues. The shape formation mechanism of each RECrO3 has been generally discussed by considering their structures and the interactions between the crystal facets and shape directing agents. The crystal facet formation mechanism of RECrO3 crystals follows the Bravais-Friedel-Donnay-Harker theory. This paper provides a general shape controllable growth technique for RECrO3 crystals, which is important for further study and application of their anisotropic properties.