scholarly journals Доменный эпитаксиальный рост сегнетоэлектрических пленок титаната бария-стронция на сапфире

2018 ◽  
Vol 60 (1) ◽  
pp. 88
Author(s):  
А.В. Тумаркин ◽  
А.А. Одинец
Keyword(s):  
Solid Solution ◽  
Single Crystal ◽  
Epitaxial Growth ◽  
Barium Strontium Titanate ◽  
Domain Size ◽  
Component Composition ◽  
Sapphire Substrates ◽  
Integral Number ◽  
Barium Strontium ◽  
Lattice Planes

AbstractA model of the epitaxial growth of crystalline multicomponent films on single-crystal substrates with a domain correspondence is presented using a solid solution of barium strontium titanate on sapphire substrates ( r cut). The domain epitaxial growth suggests the matching of the lattice planes of the film and the substrate having similar structures by comparison of domain multiple of an integral number of the interplanar spacings. Variation of the component composition of the solid solution enables changes in the domain size in the range sufficient for epitaxial growth. This method can be used to project the epitaxial growth of films of various solid solutions on single-crystal substrates.

Synthesis and characterizations of metal ions doped barium strontium titanate (BST) nanomaterials for photocatalytic and electrical applications: A mini review

2021 ◽  
Vol 112 (8) ◽  
pp. 665-677
Author(s):  
Kiflom Gebremedhn Kelele ◽  
Aschalew Tadesse ◽  
Tegene Desalegn ◽  
Suresh Ghotekar ◽  
Ruthramurthy Balachandran ◽  
...  
Keyword(s):  
Solid Solution ◽  
Dielectric Properties ◽  
Barium Titanate ◽  
Metal Ions ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Metal Ion ◽  
Dielectric Characteristics ◽  
Characterization Methods ◽  
Barium Strontium

Abstract The ferroelectric barium strontium titanate (Ba1-xSrxTiO3) is a homogeneous solid solution prepared from the mixture of barium titanate (BaTiO3), strontium titanate (SrTiO3) and titanium (IV) isopropoxide. Barium strontium titanate (BST) nanomaterials with improved permittivity and dielectric properties due to their nano-properties have attracted great interest for extensive and versatile applications as super capacitors, dielectrics, ceramics and catalysts. Introduction of metal ion dopants into the parent system of BST significantly alters its structural, morphological, electrical, optical and dielectric characteristics. This review is aimed at addressing synthesis, characterization methods, photocatalytic and electrical applications of metal ions doped BST nanomaterials. The effect of doping BST, through metal ions, on its properties and application with most probable reasons have been thoroughly discussed.

Component composition and strain of barium-strontium titanate ferroelectric films

1999 ◽  
Vol 25 (10) ◽  
pp. 780-783 ◽  
Author(s):  
S. F. Karmanenko ◽  
A. I. Dedyk ◽  
N. N. Isakov ◽  
V. I. Sakharov ◽  
A. A. Semenov ◽  
...  
Keyword(s):  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Component Composition ◽  
Ferroelectric Films ◽  
Barium Strontium

Stereo-epitaxial growth of single-crystal Ni nanowires and nanoplates from aligned seed crystals

Nanoscale ◽  
2016 ◽  
Vol 8 (19) ◽  
pp. 10291-10297 ◽  
Author(s):  
Hyoban Lee ◽  
Youngdong Yoo ◽  
Taejoon Kang ◽  
Jiyoung Lee ◽  
Eungwang Kim ◽  
...  
Keyword(s):  
Single Crystal ◽  
Epitaxial Growth ◽  
Crystalline Structure ◽  
Vapor Phase ◽  
Growth Direction ◽  
Single Crystalline ◽  
Seed Crystals ◽  
Sapphire Substrates

Vertical Ni NWs, inclined Ni NWs, and vertical Ni nanoplates were epitaxially grown on sapphire substrates with a single-crystalline structure in the vapor phase. The morphology and growth direction of Ni nanostructures are determined by Ni seed crystals.

Electrodynamic Properties of Single-Crystal and Thin-Film Strontium Titanate, and Thin-Film Barium Strontium Titanate

1999 ◽  
Vol 603 ◽  
Author(s):  
A.T. Findikoglu ◽  
Q.X. Jia ◽  
C. Kwon ◽  
B.J. Gibbons ◽  
K.Ø. Rasmussen ◽  
...  
Keyword(s):  
Thin Film ◽  
Single Crystal ◽  
Strontium Titanate ◽  
Barium Strontium Titanate ◽  
Room Temperature ◽  
Coplanar Waveguide ◽  
Low Frequency ◽  
Dissipation Factor ◽  
Barium Strontium ◽  
Dc Bias

AbstractWe have used a coplanar waveguide structure to study broadband electrodynamic properties of single-crystal and thin-film strontium titanate (STO), and thin-film barium strontium titanate (BSTO). We have implemented low-frequency capacitance (100 Hz - 1 MHz), swept-frequency transmittance (45 MHz - 4 GHz), and time-domain transmittance (dc - several GHz) measurements to determine effective refractive index (or, dielectric constant), and dissipation factor (or, loss tangent) as a function of dc bias (up to 4×106 V/m) and temperature (20 - 300 K). The STO samples used superconducting electrodes and were designed to operate at cryogenic temperatures, whereas BSTO samples used normal conducting electrodes and exhibited optimal performance around room temperature. By using nearly identical electrode geometries for all devices, we were able to conduct a direct comparative study among them, and investigate not only single-crystal vs thin-film, but also cryogenic vs room-temperature applications.

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