Atomic and domain structure of the low-temperature phase of barium metagermanate (BaGeO3)

Tobbens DM; Kahlenberg V; Gspan C; Kothleitner G

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Atomic and domain structure of the low-temperature phase of barium metagermanate (BaGeO3)

机译：偏锗酸钡（BaGeO3）低温相的原子和畴结构

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The crystal structure of the low-temperature form of barium metagermanate (BaGeO3) has been determined from laboratory X-ray powder diffraction data collected at 298.5 (5) K. The structure was found to consist of alternating layers of Ba cations and [GeO3](3) rings, and is closely related to pseudowollastonite. The rings show a twofold positional disorder owing to stacking faults. The stacking is not random, but can be rationalized by a twinning mechanism mapping the two non-congruent enantiomorphic polytypes of the structure onto each other. This model also explains the diffuse scattering and twinning observed in SAED and HRTEM, as well as the size and strain-like broadening effects found in the XRPD pattern.

机译：低温形式的偏锗酸钡（BaGeO3）的晶体结构是根据在298.5（5）K下收集的实验室X射线粉末衍射数据确定的。该结构由钡阳离子和[GeO3]的交替层组成（3）环，与假硅灰石密切相关。由于堆垛层错，这些环显示出双重的位置混乱。堆积不是随机的，但是可以通过孪生机制来合理化，该孪生机制将结构的两个非一致对映体多态性相互映射。该模型还解释了在SAED和HRTEM中观察到的弥散散射和孪晶现象，以及XRPD模式中发现的尺寸和类似应变的展宽效应。

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《Acta Crystallographica, Section B. Structural Science》 |2006年第6期|共8页
作者
Tobbens DM; Kahlenberg V; Gspan C; Kothleitner G;
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正文语种 eng
中图分类晶体学;
关键词
POWDER DIFFRACTION; CRYSTAL-STRUCTURE;

机译：粉末衍射;晶体结构;

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1. Atomic and domain structure of the low-temperature phase of barium metagermanate (BaGeO3) [J] . Tobbens DM, Kahlenberg V, Gspan C, Acta Crystallographica, Section B. Structural Science . 2006,第6期

机译：偏锗酸钡（BaGeO3）低温相的原子和畴结构
2. Near-field resonance shifts of ferroelectric barium titanate domains upon low-temperature phase transition [J] . Jonathan Doering, Hans-Georg von Ribbeck, Markus Fehrenbacher, Applied Physics Letters . 2014,第5期

机译：低温相变作用下铁电钛酸钡畴的近场共振位移
3. Processes of the relaxation of regular microdomain structures recorded in ferroelectric strontium-barium niobate crystals in the field of an atomic force microscope [J] . Gainutdinov RV, Volk TR, Lysova OA, JETP Letters . 2009,第4期

机译：原子力显微镜领域中铁电锶钡铌酸盐晶体中记录的规则微畴结构的弛豫过程
4. 2D Atomic Displacement Map of Ferroelectric Domain Walls from HREM Images and Local Complex Dielectric Function from PEELS in Barium-Titanate Based Ceramics [C] . International centennial symposium on the electron . 1998

机译：从钡 - 钛基陶瓷中剥离的HREM图像和局部复合电函数的铁电畴壁的2D原子位移图
5. Atomic-scale structural investigations of the low-temperature phase transitions for the 1/3 ML tin/germanium(111) and 1/3 ML lead/germanium(111) surfaces. [D] . Okasinski, John Scott. 2004

机译：1/3 ML锡/锗（111）和1/3 ML铅/锗（111）表面的低温相变的原子尺度结构研究。
6. Crystallographic home-source X-ray data for the atomic-resolution experimental phasing of the Shank3 SH3 domain structure from pseudomerohedrally twinned crystals [O] . Srinivas Kumar Ponna, Matti Myllykoski, Petri Kursula 2018

机译：晶体学来源的X射线数据用于从拟多面体孪晶晶体中Shank3 SH3域结构的原子分辨率实验定相
7. Atomic and domain structure of the low temperature phase of barium metagermanate [O] . D. M. Többens, V. Kahlenberg, Ch. Gspan, 2006

机译：原子和结构域结构的钡聚酯的低温阶段
8. Structures of 90(degrees) domain walls in ferroelectric barium titanate ceramics [R] . Normand, L. , Thorel, A. , Kilaas, R. 1995

机译：铁电钛酸钡陶瓷中90（度）畴壁的结构

Atomic and domain structure of the low-temperature phase of barium metagermanate (BaGeO3)

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