Preparation of ferroelectric BaTi2O5 thin films on Pt(111)/Ti/SiO2/Si substrates by pulsed laser deposition

Ferroelectric BiFeO3(BFO) thin films were prepared on Pt (111)/Ti/SiO2/Si substrates by pulsed-laser deposition under various oxygen partial pressures (PO2). The effects ofPO2on the phase, orientation, surface morphology, and ferroelectric properties of the films were investigated, particularly in regard to relationships between structure and properties. It was found that the crystallographic orientation and surface morphology of the BFO thin films strongly depended onPO2. Films prepared atPO2=10 Pa had a high degree of (111) orientation and densely packed grains. A maximum of twice the remanent polarization for the BFO thin film was 68 μC/cm2.

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“…1. The degree of preferred orientation can be determined using a texture coefficient TC (hkl) , calculated from [15]:…”

Section: Resultsmentioning

confidence: 99%

Structures and Properties of BiFeO3 Thin Films on Pt(111)/Ti/SiO2/Si Substrates Prepared by Pulsed-Laser Deposition under Various Oxygen Partial Pressures

Wang

Shen

et al. 2013

AMR

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“…Up to date, various techniques (e.g., solid-state reaction method, spark plasma sintering, arc melting, sol-gel method, hydrothermal reaction, and pulsed laser deposition) have been used to synthesize BT2 samples in the forms of single crystals [1,2,5], ceramics [14][15][16][17][18][19], fine powders [20,21], and thin films [22][23][24][25]. However, up to date only a few works reporting on BT2 1D nanostructure are available [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2019

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BaTi 2 O 5 (BT2) nanowires were successfully prepared via molten-salt method. The effects of synthesized temperature, dwell time, and molten salt concentration on the formation of BT2 nanowires were studied. X-ray diffraction patterns reveal that the BT2 nanowires crystallize in a monoclinic crystal structure. Neither the longer dwell time nor molten salt concentration has apparent influence on the formation of BT2 phase structure, whereas the synthesized temperature exerts great effect on the morphology of BT2 nanowires. One-dimensional morphology of the BT2 products was only obtained at a narrow temperature window (870-900 °C). At 970 °C, the morphology of BT2 nanowires was destroyed and they are broken into particles, growing as large flat crystals. The BT2 nanowires synthesized at 900 °C exhibit uniform morphology and grow in the [010] direction, which have an average diameter of 780 nm and length of 15 μm. The formation mechanism of BT2 nanowires in the MSS process is proposed. The BT2 nanowires exhibit the single-crystalline characteristics, as proven by high-resolution TEM images and electron diffraction patterns. Quantitative X-ray energy-dispersive spectroscopy analysis shows the BT2 nanowires having homogeneous chemical compositions, and their atomic cation ratio of Ba:Ti is 1:2.16. Dielectric properties of the BT2 nanowires synthesized at 900 °C are measured at room temperature with the frequency ranged from 10 2 to 10 6 Hz. The BT2 nanowires exhibit almost frequency independent dielectric behavior with dielectric constants of 28-31. The dielectric losses remain constant value of ~ 0.02 below 10 5 Hz, and increase up to 0.04 at 10 6 Hz.

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“…High-power lasers are widely used in industries as well as in laboratories for cladding [16,17], cutting [18], thin film deposition via laser ablation [19,20] and so on. Recent research found that pure bulk ceramic materials could also be synthesized through rapid solidification using a high power laser as the heat source [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and dielectric properties of textured SrBi2Nb2O9 ceramics via laser rapid solidification

Zhang

Chao

Liang

et al. 2012

Journal of Alloys and Compounds

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Preparation of ferroelectric BaTi2O5 thin films on Pt(111)/Ti/SiO2/Si substrates by pulsed laser deposition

Cited by 8 publications

References 17 publications

Structures and Properties of BiFeO<sub>3</sub> Thin Films on Pt(111)/Ti/SiO<sub>2</sub>/Si Substrates Prepared by Pulsed-Laser Deposition under Various Oxygen Partial Pressures

Structures and Properties of BiFeO<sub>3</sub> Thin Films on Pt(111)/Ti/SiO<sub>2</sub>/Si Substrates Prepared by Pulsed-Laser Deposition under Various Oxygen Partial Pressures

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

Synthesis and dielectric properties of textured SrBi2Nb2O9 ceramics via laser rapid solidification

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