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2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)最新文献

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On some peculiarities of surface properties of niobium anodic oxide crystals 铌阳极氧化晶体表面性质的一些特点
2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE) Pub Date : 2012-09-01 DOI: 10.1109/OMEE.2012.6464894
V. Gomozov, S. Deribo, G. Tulskiy, L. Skatkov
{"title":"On some peculiarities of surface properties of niobium anodic oxide crystals","authors":"V. Gomozov, S. Deribo, G. Tulskiy, L. Skatkov","doi":"10.1109/OMEE.2012.6464894","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464894","url":null,"abstract":"Changes in surface properties of anodic crystal films Nb2O5 during the extraction of oxygen anions from near-surface layer are considered. It is shown that the anion extraction brings about a phase transition in oxide which is accompanied by a change in conductivity resulting from structure distortion occurring during disordering in oxide crystals.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"21 1","pages":"126-126"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89598604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nanocrysrtalline Powders in the A12O3-ZrO2-CeO2-Y2O3 system for high-performance ceramics 纳米晶粉体在A12O3-ZrO2-CeO2-Y2O3体系中用于高性能陶瓷
2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE) Pub Date : 2012-09-01 DOI: 10.1109/OMEE.2012.6464791
A. V. Shevchenko, V. V. Tsukrenko, E. V. Dudnik, A. Ruban
{"title":"Nanocrysrtalline Powders in the A12O3-ZrO2-CeO2-Y2O3 system for high-performance ceramics","authors":"A. V. Shevchenko, V. V. Tsukrenko, E. V. Dudnik, A. Ruban","doi":"10.1109/OMEE.2012.6464791","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464791","url":null,"abstract":"X-ray diffraction, BET measurements, scanning electron and optical microscopy were used to analyze the properties variation of hydrothermal nanocrystalline powder with a composition 90 wt% Al<inf>2</inf>O<inf>3</inf>-10 wt%ZrO<inf>2</inf> (CeO<inf>2</inf>, Y<inf>2</inf>O<inf>3</inf>) after thermal treatment in the temperature range 400–1300 °C. The composition of the ZrO<inf>2</inf>-based solid solution was (mol %) 90ZrO<inf>2</inf>-8CeO<inf>2</inf>-2Y<inf>2</inf>O<inf>3</inf>. It was found that α-Al<inf>2</inf>O<inf>3</inf> is formed at 850 °C. Phase transformation F-ZrO<inf>2</inf>⇆T-ZrO<inf>2</inf> occurred at 1000 °C. Produced powder was sintered at 1300 °C. The present investigation demonstrates that heat treatment of composite nanocrystalline powders gives rise to complex processes. Understanding of such processes makes it possible to optimize conditions for fabrication of advanced ceramics with tailored properties.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"1 1","pages":"79-80"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79717381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The heat generation processes in Q-switched YAG:Nd/YAG:Cr microchip laser and their influence on the parameters of laser radiation 调q YAG:Nd/YAG:Cr微芯片激光器的产热过程及其对激光辐射参数的影响
2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE) Pub Date : 2012-09-01 DOI: 10.1109/OMEE.2012.6464799
O. Buryy, S. Ubizskii
{"title":"The heat generation processes in Q-switched YAG:Nd/YAG:Cr microchip laser and their influence on the parameters of laser radiation","authors":"O. Buryy, S. Ubizskii","doi":"10.1109/OMEE.2012.6464799","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464799","url":null,"abstract":"The heat generation processes are considered for passively Q-switched YAG:Nd/YAG:Cr microchip laser. The distributions of the temperature, the refractive index and the deformations of laser crystal are determined. At the given profile of refractive index and deformations of the active element, the laser beam radius and the divergence are calculated.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"34 5 1","pages":"177-178"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76418980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An urbach study of the degree of structural disorder in cdte nanocrystals in glass matrix 玻璃基体中cdte纳米晶结构无序程度的urbach研究
2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE) Pub Date : 2012-09-01 DOI: 10.1109/OMEE.2012.6464794
A. T. Ince, M. Torun, M. Yukselici
{"title":"An urbach study of the degree of structural disorder in cdte nanocrystals in glass matrix","authors":"A. T. Ince, M. Torun, M. Yukselici","doi":"10.1109/OMEE.2012.6464794","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464794","url":null,"abstract":"CdTe nanocrystals embedded in matrixes such as, glass, plastic and, aqueous solution have been investigated extensively due to their potential applications in nonlinear optical devices, biotechnology and medicine. When the size of bulk semiconductor is reduced to nanometer scales, the crystal gains new optical and electronic properties. Energy levels are quantized as in atoms and the energy difference between levels widens with the inverse of the size squared. CdTe nanocrystals were grown in glass by solid-state phase precipitation at the above glass transition temperature. A size dependent blue shift in the asymptotic absorption edge was observed in optical absorption spectra. The crystalline composition was studied by Resonant Raman spectroscopy. The width of the optical absorption tail at long wavelengths depends on the spread of electron energy levels within the structure, called the Urbach energy, which was calculated depending on size. We observe that the Urbach tail narrows as the surface to volume ratio of the nanocrystals decreases.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"73 1 1","pages":"73-74"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77174273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Influence of manganese oxides on the optical absorption and photocatalytic activities of titanium dioxide 锰氧化物对二氧化钛光吸收和光催化活性的影响
2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE) Pub Date : 2012-09-01 DOI: 10.1109/OMEE.2012.6464756
L. Kernazhitsky, V. Shymanovska, T. Gavrilko, V. V. Naumov, T. Khalyavka, V. Kshnyakin
{"title":"Influence of manganese oxides on the optical absorption and photocatalytic activities of titanium dioxide","authors":"L. Kernazhitsky, V. Shymanovska, T. Gavrilko, V. V. Naumov, T. Khalyavka, V. Kshnyakin","doi":"10.1109/OMEE.2012.6464756","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464756","url":null,"abstract":"Nanocrystalline titanium-manganese mixed oxides (TMMO) with Mn content of 13–16 at. % were first synthesized by manganese hydroxide precipitation on anatase or rutile particles. UV-vis absorption spectra were investigated in 2.4–6.0 eV region and revealed that compared with pure TiO<inf>2</inf> the presence of manganese oxides results in an increase of the absorption intensity and significant red shift of the TMMO absorption edge. Photocatalytic activity of pure TiO<inf>2</inf>, Mn<sup>2+</sup> doped TiO<inf>2</inf> and TMMO during the photocatalytic decomposition of the safranine dye under UV irradiation was studied. A great improvement of photocatalytic activity is registered for Mn<sup>2+</sup>-doped TiO<inf>2</inf> (anatase and rutile), and rutile-based TMMO sample.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"275 1","pages":"303-304"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86362327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New method for piezooptic coefficients measurements based on four-point bending 基于四点弯曲的压电系数测量新方法
2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE) Pub Date : 2012-09-01 DOI: 10.1109/OMEE.2012.6464797
O. Krupych, V. Savaryn, I. Skab, R. Vlokh
{"title":"New method for piezooptic coefficients measurements based on four-point bending","authors":"O. Krupych, V. Savaryn, I. Skab, R. Vlokh","doi":"10.1109/OMEE.2012.6464797","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464797","url":null,"abstract":"A new technique is suggested for determination of piezooptic coefficients, which represents a combination of digital imaging laser interferometry and a canonical four-point bending method. The design of interferometer, measurement procedures, and data processing are described in detail. Potentials of the present technique are tested on the example of widely used optical borosilicate glass BK7. High enough precision, together with unambiguity in determination of the sign of both piezooptic (πqm) and photoelastic (pqm) coefficients, allow us to claim it to be one of the most accurate and reliable techniques for the measurements of pqm and pqm parameters.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"16 1","pages":"181-182"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84242675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermodynamical assessment of stability La2−xSrxCuO4−δ solid solutions La2−xSrxCuO4−δ固溶体稳定性的热力学评价
2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE) Pub Date : 2012-09-01 DOI: 10.1109/OMEE.2012.6464777
L. A. Tiphlova, A. S. Monayenkova, I. Romanova, V. Alyoshin
{"title":"Thermodynamical assessment of stability La2−xSrxCuO4−δ solid solutions","authors":"L. A. Tiphlova, A. S. Monayenkova, I. Romanova, V. Alyoshin","doi":"10.1109/OMEE.2012.6464777","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464777","url":null,"abstract":"The solid solutions La<inf>2−x</inf>Sr<inf>x</inf>CuO<inf>4−δ</inf> (0 ≤ x(Sr) ≤ 1.2) in La<inf>2</inf>CuO<inf>4</inf> - Sr<inf>2</inf>CuO<inf>3</inf> system were synthesized and characterized by x-ray diffraction and chemical analyses. The enthalpies of reaction La<inf>2−x</inf>Sr<inf>x</inf>CuO<inf>4−δ</inf> with 1 N hydrochloric acid were measured in hermetic swinging isoperibolic calorimeter at 298.15 K. The Gibbs energies were assessed from thermochemical data. It was estimated that the solid solution is thermodynamically unstable at x(Sr) > 0.6.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"48 1","pages":"112-113"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85885868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Point defects physics in lithium niobate related to optical damage resistance, photorefractive holographic properties and applications 铌酸锂的点缺陷物理与光学抗损伤、光折变全息特性及其应用有关
2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE) Pub Date : 2012-09-01 DOI: 10.1109/OMEE.2012.6464811
L. Arizmendi, E. Ambite, J. Plaza, F. Jaque
{"title":"Point defects physics in lithium niobate related to optical damage resistance, photorefractive holographic properties and applications","authors":"L. Arizmendi, E. Ambite, J. Plaza, F. Jaque","doi":"10.1109/OMEE.2012.6464811","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464811","url":null,"abstract":"In this work some aspects of point defects produced in lithium niobate crystals by doping and thermal treatments are studied. The effect of oxidation and reduction processes on pure and doped samples is analyzed. In particular, results of visible and infrared optical absorption, photovoltaic behavior, paramagnetic resonance and holographic fixing parameters are considered to understand the photorefractive properties and optical damage inhibition in crystals co-doped with Fe and different concentrations of optical damage resistant impurities. The behavior of OH-centers and its role on photorefractive hologram fixing is also considered.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"8 1","pages":"149-150"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86754153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The effect of high temperature heat treatment on the directional homogeneity of LiNbO3 crystal studied through transmission ellipsometry 利用透射椭偏仪研究了高温热处理对LiNbO3晶体定向均匀性的影响
2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE) Pub Date : 2012-09-01 DOI: 10.1109/OMEE.2012.6464805
A. Aşıkoğlu, M. H. Yükselici, D. Bulut, D. Sugak, I. Solskii, I. Syvorotka, Y. Zhydachevskii, S. Ubizskii, O. Buryy
{"title":"The effect of high temperature heat treatment on the directional homogeneity of LiNbO3 crystal studied through transmission ellipsometry","authors":"A. Aşıkoğlu, M. H. Yükselici, D. Bulut, D. Sugak, I. Solskii, I. Syvorotka, Y. Zhydachevskii, S. Ubizskii, O. Buryy","doi":"10.1109/OMEE.2012.6464805","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464805","url":null,"abstract":"Pure and doped lithium niobate (LiNbO3) crystals heat treated at temperatures up to 1000°C under reduced/oxidized atmospheres were studied through normal incidence transmission ellipsometry in which a laser with a wavelength of 632.8 nm was employed. The differences in refractive indices between two orthogonal directions were calculated. Results show that the birefringence varies depending on thermal history of the samples.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"57 1","pages":"161-162"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89161332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Oxygen-related defects and luminescence properties of CaMoO4 single crystals and CaMoO4-CaWO4 compounds CaMoO4单晶及CaMoO4- cawo4化合物的氧相关缺陷及发光特性
2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE) Pub Date : 2012-09-01 DOI: 10.1109/OMEE.2012.6464887
Y. Zakharko, A. Luchechko, I. Solskii
{"title":"Oxygen-related defects and luminescence properties of CaMoO4 single crystals and CaMoO4-CaWO4 compounds","authors":"Y. Zakharko, A. Luchechko, I. Solskii","doi":"10.1109/OMEE.2012.6464887","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464887","url":null,"abstract":"Emission spectra under UV and X-ray excitations, as well as luminescence decay kinetics of CaMoO<inf>4</inf> single crystals and CaMoO<inf>4</inf>-CaWO<inf>4</inf> mixed structures were studied. The broad luminescence bands with maxima at 425 and 530 nm correspond to CaWO<inf>4</inf> and CaMoO<inf>4</inf> crystals, respectively. The decay kinetics show non-single exponential behavior for all investigated CaMoO<inf>4</inf>-CaWO<inf>4</inf> samples at room temperature.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"126 1","pages":"171-171"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77751022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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