chemical solution deposition of ferroelectric thin films

... measurements for ZnO:Al thin films 214 6-26(a-b) Corrected Hall mobility for ZnO:Al thin films 217 Trang 14Requirements for the Degree of Doctor of PhilosophySPUTTER DEPOSITION OF ZNO THIN FILMS ByLoren ... of ZnO:Al 165 6-5 Deposition rate ratio between 250 W/1000 W and 500 W/1000 W conditions 166 6-6 Resistivity of ZnO:Al thin films 167 6-7 Resistivity of ZnO:Al thin films with 500 W data offset ... of the resistivity ratio between the thin films 153 6-1 Cross-sectional view of the sputter deposition geometry 161 6-2 Measured thickness of the ZnO:Al thin film 163 6-3 Deposition rate of

Ngày tải lên: 21/12/2016, 11:00

... complex permittivity of the ferroelectric thin films The applications of HTS thin films in the fabrication of high quality factor microstrip resonators were studied A novel type of miniaturized microstrip ... couplings of a dual-spiral resonators 105 6.1 Barium strontium titanate ferroelectric thin films 121 6.2.3 Crystallinity of the Ba0.1Sr0.9TiO3 thin films 1276.2.4 Surface morphology of the Ba0.1Sr0.9TiO3 ... application of HTS/ferroelectric thin films for planar tunable microwave devices was studied using YBCO/Ba0.1Sr0.9TiO3 multilayer thin films A process for the fabrication of patterned ferroelectric

Ngày tải lên: 16/09/2015, 08:30

... Pulsed laser deposition of Barium strontium titanate and Bismuth zinc niobate thin films Thin films could be prepared by RF sputtering deposition, chemical vapor deposition, metalorganic deposition ... processing of complex ferroelectric oxide and monolithically compatible processing of ferroelectric thin-film compounds, thin film ferroelectric materials were inspired wide investigation instead of ... to improve the dielectric properties of a ferroelectric thin film by means of substitution of the cations or redistribution of the precipitation of a non-ferroelectric phase at grain boundaries

Ngày tải lên: 04/10/2015, 10:26

... SURFACE OF BATIO3 THIN FILMS BY DFT METHOD NGUYEN THUY TRANG, NGUYEN VAN CHINH, BACH THANH CONG, NGUYEN HOANG LINH Computational Materials Science Laboratory, Faculty of Physics, Hanoi University of ... functional theory (DFT) study on nano-thin films of the most typical ferroelectric compound BaTiO3 was presented The results showed that the convergence of the film model using for DFT calculation ... surface electric dipoles The surface effect acts on the electronic structure of thin films in the manner of the asymmetry of atomic sites and the structural reconstruction due to the surface relaxation

Ngày tải lên: 30/10/2015, 19:59

... Journal of Science: Mathematics – Physics, Vol 31, No (2015) 21-27 Development of Laser Beam Diffraction Technique for Determination of Thermal Expansion Coefficient of Polymeric Thin Films Nguyen ... measurering the thermal expansion coefficient of the pure P3HT and PTC, a solution of 10 mg of P3HT and PTC in chloroform was dropped on the surface of glass grating with density 625 grooves/mm ... Journal of Science: Mathematics – Physics, Vol 31, No (2015) 21-27 Development of Laser Beam Diffraction Technique for Determination of Thermal Expansion Coefficient of Polymeric Thin Films Nguyen

Ngày tải lên: 19/02/2017, 18:41

... evaluation of content of each element in the case of thin films due to the fact that it is just most sensitive to the surface of the film but not as the whole However, one can see a slight tendency of ... and/or decreasing ionic radii of the rare earth cation [8, 9, 17–18] Recent studies of bulk and thin films of (Bi,RE) FeO3 (RE = Nd, Sm) have revealed a formation of a stable antipolar, PbZrO3-like ... identification of suitable material design rules—of magnetic, ferroelectric and magnetoelectric properties of multiferroics, due to its ability to describe the many active degrees of freedom within a

Ngày tải lên: 16/12/2017, 14:58

... Orientation of the Resultant Thin Films 4.3 Surface Morphology of UV-Light-Irradiated BNT Thin Films 4.4 Ferroelectric Properties of UV-Irradiated BNT Thin Films ... 1.1 The Chemical Solution Deposition Process 1.2 Representative Ferroelectric Thin Films for Memory Devices 1.3 Layer-Structured Bi4 Ti3 O12 -Based Thin Films ... 16 19 20 Part II Preparation and Characterization of Ferroelectric Thin Films Theoretical Aspects of Phase Transitions in Ferroelectric Thin Films Shin-ichi Hirano, Takashi Hayashi, Wataru Sakamoto,

Ngày tải lên: 11/05/2018, 16:49

... investigation of the chemical vapour deposition of cadmium chalcogenides from the decomposition of Cd[(C6H5)2PSSe]2, as a single source precursor is carried out and reported herein within the framework of ... the large amount of repulsion between the lone pairs of electrons of phosphorus with those of cadmium The wider Se1–Cd–Se2 bond angle of 159.4° was as a result of the proximity of the non-coordinating ... understanding of the chemical vapour deposition of cadmium single-source precursor: a density functional theory approach Abstract Background: The phosphinato complexes of group IIB are of great

Ngày tải lên: 29/05/2020, 14:06

... mecha-nisms at the origin of the properties of new materials Each kind of material needs specific theoretical methods in spite of the fact that there is a large number of common basic principles ... properties The main purpose of the paper is not to present technical details of each of them, but rather to show what can be understood using each of them For technical details of a particular method, ... magnetism In thinfilms the lateral sizes are supposed to be infinite while the thickness is composed of a few dozens of atomic layers Spins at the two surfaces of afilm lack a number of neighbors

Ngày tải lên: 04/02/2021, 20:11

... transparent of TNO-0s Ag thin films 39 Figure 23 Effect of annealing time to the transparent of TNO-30s Ag thin films 40 Figure 24 Effect of annealing time to the transparent of TNO-60s Ag thin films ... to the conductivity of TNO thin films 48 Figure 32 Effect of annealing temperature to the FOM of TNO thin films 50 Figure 33 Effect of annealing time to the FOM of TNO thin films 51 Figure ... Effect of annealing temperature to the transparent of TNO-60s Ag thin films 46 Figure 30 Effect of annealing time to the conductivity of TNO thin films 47 Figure 31 Effect of annealing

Ngày tải lên: 17/03/2021, 08:59

... mecha-nisms at the origin of the properties of new materials Each kind of material needs specific theoretical methods in spite of the fact that there is a large number of common basic principles ... properties The main purpose of the paper is not to present technical details of each of them, but rather to show what can be understood using each of them For technical details of a particular method, ... magnetism In thinfilms the lateral sizes are supposed to be infinite while the thickness is composed of a few dozens of atomic layers Spins at the two surfaces of afilm lack a number of neighbors

Ngày tải lên: 17/03/2021, 20:26

... photodegradation of SRB using (P25/PAA)n thin films at wavelength 562 nm 31 Figure 18 (a) SRB degradation profiles of (P25/PDopa)n thin films at wavelength 562 nm, (b) the first-order kinetic plot of ln(C/C0) ... photodegradation of SRB using (P25/PDopa)n thin films at wavelength 562 nm, 33 Figure 19 (a) SRB degradation profiles of (TiO2/PDopa)n thin films at wavelength 562 nm, (b) the first-order kinetic plot of ... photodegradation profiles of (P25/PAA)nthin films at wavelength 562 nm, (b) the first-order kinetic plot of ln(C/C0) and time(minutes) for photodegradation of SRB using (P25/PAA)n thin films at wavelength

Ngày tải lên: 16/05/2021, 11:47

... − 1)yng1 − p = (7) For surface layers atoms of thin films, the displacement of the surface layers atoms of the thin film yng =< uing > is solution of equation  ∂ uing ng kng < u >a +γ ng < ... values of parameters of crystal depending on the structure of crystal lattice [10] Similar derivation can be also done for next surface layers atoms of thin film, their displacement are solution of ... properties of metallic thin films with BCC structure for Nb and W at zero pressure For the sake of simplicity, the interaction potential between two intermediate atoms of these thin films is assumed

Ngày tải lên: 28/06/2021, 19:39

... growing of semiconducting thin films on substrates, modified chemical bath deposition method (M-CBD) as modified version of chemical bath deposition (CBD) method is still one of the most appropriate ... thickness of thin film growth on glass substrate in 75 steps was estimated to be 112 nm Lattice parameters and percentage compositions of phases are given in Table The XRD spectra of thin films were ... distilled water For cationic solutions, acidic (pH≈3) In2(SO4)3 solutions of different molar concentrations were used while for anionic ones, basic (pH≈12) Na2SeSO3 solution of 0.05 M was used Optical

Ngày tải lên: 13/01/2022, 00:27

... Plasma-Enhanced Deposition Processes (PECVD) 14 1.2.3.5 Photo-Enhanced Chemical Vapor Deposition (PHCVD) 15 1.2.3.6 Laser-Enhanced Chemical Vapor Deposition (LCVD) 15 1.3 Chemical Vapor Deposition of Tungsten ... Prof r of Chemical Engineering, Chemistry, and Envi onmental Science, NJIT Professor of Chemical Engineering, Chemistry, and Environment Science, NET Trang 7Author: Hongyu Chen Degree: Master of ... discussion of the general concepts of CVD (Chemical Vapor Deposition) Finally, a systematic review of the development of CVD tungsten is presented 1.1.1 The Promising Application of X-ray Lithography

Ngày tải lên: 30/10/2022, 20:35

... photodegradation of SRB using (P25/PAA)n thin films at wavelength 562 nm 31 Figure 18 (a) SRB degradation profiles of (P25/PDopa)n thin films at wavelength 562 nm, (b) the first-order kinetic plot of ln(C/C0) ... photodegradation of SRB using (P25/PDopa)n thin films at wavelength 562 nm, 33 Figure 19 (a) SRB degradation profiles of (TiO2/PDopa)n thin films at wavelength 562 nm, (b) the first-order kinetic plot of ... encourage me and offer support and love Sincerely, Duong CuongThinh Trang 5TABLE OF CONTENT ACKNOWLEDGEMENT iii TABLE OF CONTENT iv LIST OF FIGURES 1 LIST OF TABLES 3 LIST OF ABBREVIATIONS

Ngày tải lên: 03/04/2023, 14:41

... Electrospray deposition of polymer thin films for organic light-emitting diodes Wontae Hwang1, Guoqing Xin1, Minjun Cho1, Sung Min Cho1, and Heeyeop Chae*2 School of Chemical Engineering, ... applicability of the electrospray process to organic thin films in OLEDs was demonstrated in small-scale devices [12] In this work, we demonstrated nanoscale-thick organic thin films using the ... patterning, multilayer stacking, and continuous processing of organic thin films Experimental details For PLED fabrication, we used a blended solution of poly(N-vinyl carbazole) [PVK], 2-(4biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole...

Ngày tải lên: 20/06/2014, 23:20

... 3.1 Deposition conditions for BTS thin films ……………………………39 Table 3.2 Properties of the BTS thin films with different thicknesses……………52 Table 3.3 Thickness dependence of P and FD of the BTS thin ... levels of defects often associated with thin films are thought to have significant effects [21-23] Studies on ferroelectric thin films are therefore complicated The performance of a specific ferroelectric ... decibel of loss (figure of merit) The ideal value of the loss tangent is required to be in the range of 0.01 or less [30] Accordingly, the importance of low dielectric loss of ferroelectric thin films...

Ngày tải lên: 10/09/2015, 15:48

... applications 15 1.3 Processing of ferroelectric thin films 16 1.3.1 Deposition technologies for ferroelectric thin films 16 1.3.2 Chemical solution deposition (CSD) method .16 ... such as PZN-based thin films A polyethylene glycol (PEG)-modified chemical solution deposition (CSD) will be employed to prepare the ferroelectric thin films Chemistry of the solution has dramatic ... challenging By contrast, solution deposition as described below offers excellent control of the chemistry and composition of the thin film [78] A further advantage of solution deposition routes is...

Ngày tải lên: 16/09/2015, 08:31

... reproduction of the stoichiometry of the charged material and in situ deposition of oxides without the requirement of any post -deposition process adds to the advantage of the technique On top of all ... measure the magnetic properties of the samples Pulsed Laser Deposition Technique Pulsed laser deposition (PLD) has clearly emerged as one of the premier thin film deposition techniques for multi-elemental ... characterization technique of thin films of Ti1-xTaxO2 PLD technique has been used for the film fabrication X-ray diffraction (XRD) studies have been carried out on the epitaxially grown thin films on STO...

Ngày tải lên: 08/09/2015, 15:20