5 天之前 · e A planar-view HAADF-STEM image showing the nanoislands in BFO film. f Enlarged HAADF-STEM image for one nanoisland. g–j Polarization distribution of BFO corresponding to the regions numbered 1 ...

2021年10月20日 · Here, we studied the charge distribution at a BFO/TSO interface using atomic-resolution STEM, 4D STEM, Bader charge analysis and EELS, and demonstrated the build-up of 2DHG/2DEG that is...

2017年1月19日 · By performing atomic-resolution scanning transmission electron microscopy (STEM) and spectroscopy, combined with first-principles density functional theory (DFT) calculations, we reveal two...

2024年7月24日 · In this study, four-dimensional scanning electron microscopy (4D-STEM) is combined with structure factor calculations, applied to an epitaxial BFO film grown on PrScO 3 (PSO) single crystal to investigate: (1) tensile strain induced effects on BFO crystal symmetry, and (2) ferroelectric domain structure defined by spontaneous polarization ...

2025年2月15日 · Combined high precision reciprocal spacing mapping (RSM) measurements with the atomic-scale scanning transmission electron microscopy (STEM) technique, it was confirmed that complex dipole grouping was formed in BFO thin films, exhibiting regular striping domains and accumulation of charged domain walls.

2024年9月18日 · Density-functional-theory (DFT) calculations, in combination with scanning transmission electron microscopy (STEM), show how this reduction in tetragonality in the device environment in turn triggers a phase transition upon cooling toward room temperature to a previously unknown metastable monoclinic phase.

The goal of this study is to show how polarization of bismuth ferrite (BFO) doped with five different Samarium (Sm) concentrations (0%, 7%, 10%, 13% and 20%) can be predicted using deep convolution neural networks (DCNNs) with and without atom finding.

2018年8月29日 · a 沿着图1d中的紫色和红色线，穿过sro/bfo异质界面的a位点(顶部，紫色)和b位点(底部，红色)阳离子的stem强度分布。 b在实验和计算中，SRO/BFO界面附近B位阳离子的平均偏心位移；

2021年4月14日 · Sm-doped BiFeO3 STEM datasets collected by Chris Nelson. Sample created at University of Maryland.

2021年3月1日 · Defects introduced by ion implantation can provide large tunable strain to achieve c/a ratio to 1.29 in BFO thin films. BiFeO 3, a single-phase multiferroic material, possesses several polymorphs and exhibits a strong sensitivity to strain.