Regulation of the Ba/Sr Ratio of (Ba,Sr)TiO₃ and Nanorod Build‐Up through a Topochemical Synthesis Method Using BaTi₂O₅ as the Template

Abstract

One-dimensional (1D) nano-ferroelectrics have important applications in the electronics industry, and their highquality synthesis has attracted a great deal of interest in the field of the chemistry of materials. In this work, single-crystal perovskite (Ba 0.5 ,Sr 0.5 )TiO 3 nanorods have been prepared by a topochemical molten-salt synthesis (TMSS) method. The conversion process and the topochemical mechanism have been investigated, on the basis of XRD, SEM, and TEM analyses. The TMSS method contains two main steps. In the first step, 1D BaTi 2 O 5 nanocrystals are synthesized in a molten environment. In the second step, using these BaTi 2 O 5 monoclinic nanorods as templates, (Ba 0.5 ,Sr 0.5 )TiO 3 perovskite nanorods are constructed [a]

Microstructural characterization and dielectric properties of single crystalline BaTi2O5 nanowires prepared by molten-salt method

“…Recently, BT2 nanowires are also used as templates for the synthesis of perovskite oxide nanorods such as BaTiO 3 [30,31] and (Ba,Sr)TiO 3 [32].…”

Topochemical Conversion of (111) BaTiO3 Piezoelectric Microplatelets Using Ba6Ti17O40 as the Precursor

“…The perovskite type BaTiO 3 (BT) microplatelet is considered to be an ideal template seed owing to its strong anisotropy, high chemical stability, and good piezoelectric properties. ,, Unfortunately, due to the high symmetry of the perovskite itself, BT easily grows into a cubic block morphology. , In order to synthesize an anisotropic template, the topochemical microcrystal conversion (TMC) method has been developed by using molten salt as a medium. − Through a designed topochemical reaction, this method helps to achieve the inheritance of the product morphology for the precursor morphology, and is particularly advantageous for the synthesis of anisotropic perovskite oxides. In recent years, a lot of studies have been done on TMC synthesis of BT microplatelets, in which plate-like bismuth layer-structured ferroelectric (BLSF) particles are most widely used as the precursor.…”