Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912344
A. Belous
Three types of ferromagnetic nanostructures based on barium hexaferrite (BaFe12O19), lanthanum-strontium manganites with perovskite structure (La1-xSrxMnO3) and materials with spinel structure (AFe2O4, A = Ni, Zn, Co, Mn, Fe) have been synthesized by precipitation from aqueous and nonaqueous solutions, by the sol-gel method and from microemulsions. Magnetic properties of the synthesized nanoparticles and films have been investigated. It was shown that the obtained nanoparticles exhibit superparamagnetic properties. It has been found that the synthesized nanoparticles have promise in hyperthermia of cancer cells. It has been shown that the films based on barium hexaferrite can have promise in the creation of nonlinear resonant microwave elements on the basis of high-Q dielectric resonators and ferromagnetic film.
以六铁酸钡(BaFe12O19)、钙钛矿结构镧锶锰矿(La1-xSrxMnO3)和尖晶石结构材料(AFe2O4, A = Ni, Zn, Co, Mn, Fe)为基材，采用溶胶-凝胶法和微乳法制备了三种类型的铁磁纳米结构。研究了合成的纳米颗粒和薄膜的磁性能。结果表明，制备的纳米颗粒具有超顺磁性。研究发现，合成的纳米颗粒在肿瘤细胞热疗方面具有广阔的应用前景。在高q介电谐振器和铁磁薄膜的基础上，六铁氧体钡薄膜在制造非线性谐振微波元件方面具有广阔的应用前景。
{"title":"Synthesis and properties of ferromagnetic nanostructures and their possible use in medicine and microwave engineering","authors":"A. Belous","doi":"10.1109/OMEE.2014.6912344","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912344","url":null,"abstract":"Three types of ferromagnetic nanostructures based on barium hexaferrite (BaFe12O19), lanthanum-strontium manganites with perovskite structure (La1-xSrxMnO3) and materials with spinel structure (AFe2O4, A = Ni, Zn, Co, Mn, Fe) have been synthesized by precipitation from aqueous and nonaqueous solutions, by the sol-gel method and from microemulsions. Magnetic properties of the synthesized nanoparticles and films have been investigated. It was shown that the obtained nanoparticles exhibit superparamagnetic properties. It has been found that the synthesized nanoparticles have promise in hyperthermia of cancer cells. It has been shown that the films based on barium hexaferrite can have promise in the creation of nonlinear resonant microwave elements on the basis of high-Q dielectric resonators and ferromagnetic film.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123752569","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}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912386
A. Szysiak, Y. Zhydachevskii, A. Suchocki
Erbium and ytterbium co-doped Gd2O3 nanocrystals were prepared by hydrothermal and reverse microemulsion methods. The upconversion luminescence spectra of Er3+ ions were measured at room temperature. An effect of synthesis conditions on the luminescence efficiency is discussed.
{"title":"Upconversion in Gd2O3: Er, Yb nanophosphors obtained by hydrothermal and reverse microemulsion methods","authors":"A. Szysiak, Y. Zhydachevskii, A. Suchocki","doi":"10.1109/OMEE.2014.6912386","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912386","url":null,"abstract":"Erbium and ytterbium co-doped Gd<sub>2</sub>O<sub>3</sub> nanocrystals were prepared by hydrothermal and reverse microemulsion methods. The upconversion luminescence spectra of Er<sup>3+</sup> ions were measured at room temperature. An effect of synthesis conditions on the luminescence efficiency is discussed.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"16 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120845633","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}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912438
Y. Zorenko, V. Gorbenko, T. Zorenko, V. Savchyn, A. Voloshinovskii
The work presents the results of studying the growth processes and luminescent properties of the single crystalline films of CaWO4 and CaWO4:Bi tungstates, grown by the Liquid Phase Epitaxy (LPE) method.
{"title":"Luminescent and scintillation properties of CaWO4 and CaWO4:Bi single crystalline films","authors":"Y. Zorenko, V. Gorbenko, T. Zorenko, V. Savchyn, A. Voloshinovskii","doi":"10.1109/OMEE.2014.6912438","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912438","url":null,"abstract":"The work presents the results of studying the growth processes and luminescent properties of the single crystalline films of CaWO4 and CaWO4:Bi tungstates, grown by the Liquid Phase Epitaxy (LPE) method.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126625943","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}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912340
Y. Titov, S. Nedilko, V. Chornii, V. Scherbatskii, N. Belyavina, V. Markiv, V. Polubinskii
The Sr3LnInSnO8 (Ln = La, Pr, Nd) and Sr3LaScSnO8 perovskites were synthesized and their structures have been determined by X-ray powder diffraction. The peculiarities of the structures and correlations composition - structure - luminescent properties have been discussed.
{"title":"Crystal structure and luminescence of layered perovskites Sr3LnBIIISnO8 (BIII = Sc, In)","authors":"Y. Titov, S. Nedilko, V. Chornii, V. Scherbatskii, N. Belyavina, V. Markiv, V. Polubinskii","doi":"10.1109/OMEE.2014.6912340","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912340","url":null,"abstract":"The Sr<sub>3</sub>LnInSnO<sub>8</sub> (Ln = La, Pr, Nd) and Sr<sub>3</sub>LaScSnO<sub>8</sub> perovskites were synthesized and their structures have been determined by X-ray powder diffraction. The peculiarities of the structures and correlations composition - structure - luminescent properties have been discussed.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126403114","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}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912437
V. Mokina, F. Danevich, V. Kobychev, R. V. Kobychev, H. Kraus, V. Mykhaylyk, I. Solskii
The purpose of this work is to study the possibility to improve light collection in conditions similar to than in cryogenic scintillating bolometers. Energy resolution and relative pulse amplitude of scintillation detectors were measured using CaWO4 crystals with different shapes (cylindrical, hexagonal and cube prism), reflector materials and shapes, optical contact and surface conditions (polished and diffused). Light collection was simulated using ZEMAX codes.
{"title":"Optimization of light collection from oxide CaWO4 scintillators","authors":"V. Mokina, F. Danevich, V. Kobychev, R. V. Kobychev, H. Kraus, V. Mykhaylyk, I. Solskii","doi":"10.1109/OMEE.2014.6912437","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912437","url":null,"abstract":"The purpose of this work is to study the possibility to improve light collection in conditions similar to than in cryogenic scintillating bolometers. Energy resolution and relative pulse amplitude of scintillation detectors were measured using CaWO4 crystals with different shapes (cylindrical, hexagonal and cube prism), reflector materials and shapes, optical contact and surface conditions (polished and diffused). Light collection was simulated using ZEMAX codes.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"6 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128759556","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}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912355
A. Ingram, H. Klym, O. Shpotyuk, I. Hadzaman
The o-Ps-related modes are used for study of free-volume entities in nanostructured spinel MgAl2O4 ceramics after drying and water-immersion treatment. It is established that that water-sorption processes in magnesium aluminate ceramics leads to corresponding increase in positron trapping rates of extended defects located as addition phases near grain boundaries. These phase extractions and free-volume entities in ceramic structure serve as specific trapping centers for positrons penetrating ceramics. It is demonstrated that Tao-Eldrup model can be adequately used for the calculation free volume (or nanopores size) in MgAl2O4 ceramics using o-Ps lifetimes of the third and the fourth components.
{"title":"O-Ps-related modes for study of free-volume entities in nanostructured MgAl2O4 ceramics","authors":"A. Ingram, H. Klym, O. Shpotyuk, I. Hadzaman","doi":"10.1109/OMEE.2014.6912355","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912355","url":null,"abstract":"The o-Ps-related modes are used for study of free-volume entities in nanostructured spinel MgAl2O4 ceramics after drying and water-immersion treatment. It is established that that water-sorption processes in magnesium aluminate ceramics leads to corresponding increase in positron trapping rates of extended defects located as addition phases near grain boundaries. These phase extractions and free-volume entities in ceramic structure serve as specific trapping centers for positrons penetrating ceramics. It is demonstrated that Tao-Eldrup model can be adequately used for the calculation free volume (or nanopores size) in MgAl2O4 ceramics using o-Ps lifetimes of the third and the fourth components.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"325 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115453654","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}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912324
M. Biatov, I. Gerasymov, O. Sidletskiy, A. Gektin
Paper describes production of mixed scintillation crystals of perovskite family Y(Al,Ga)O3 and study of their optical and scintillation properties.
本文叙述了Y(Al,Ga)O3钙钛矿族混合闪烁晶体的制备及其光学和闪烁性能的研究。
{"title":"Modifying the properties of crystals in the transition from pure to mixed perovskites","authors":"M. Biatov, I. Gerasymov, O. Sidletskiy, A. Gektin","doi":"10.1109/OMEE.2014.6912324","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912324","url":null,"abstract":"Paper describes production of mixed scintillation crystals of perovskite family Y(Al,Ga)O3 and study of their optical and scintillation properties.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114515766","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}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912439
D. Wróbel, P. Bilski, B. Marczewska, M. Kłosowski
LiMgPO4 (LMP) phosphor is a new highly sensitive material for TL and OSL dosimetry. The objective of the work was to investigate the dosimetric properties of this material. LMP phosphor doped with Tb and B was irradiated with beta rays and alpha particles. Thermoluminescence (TL) and optically stimulated luminescence (OSL) measurements were performed for LMP powders in comparison with Al2O3:C detector (Landauer). The phosphate which was made in our laboratory exhibits a main TL peak at 150°C. The synthesized LiMgPO4:Tb,B is a highly sensitive OSL material for dosimetric applications.
{"title":"TL and OSL properties of LiMgPO4:Tb,B","authors":"D. Wróbel, P. Bilski, B. Marczewska, M. Kłosowski","doi":"10.1109/OMEE.2014.6912439","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912439","url":null,"abstract":"LiMgPO4 (LMP) phosphor is a new highly sensitive material for TL and OSL dosimetry. The objective of the work was to investigate the dosimetric properties of this material. LMP phosphor doped with Tb and B was irradiated with beta rays and alpha particles. Thermoluminescence (TL) and optically stimulated luminescence (OSL) measurements were performed for LMP powders in comparison with Al2O3:C detector (Landauer). The phosphate which was made in our laboratory exhibits a main TL peak at 150°C. The synthesized LiMgPO4:Tb,B is a highly sensitive OSL material for dosimetric applications.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126677956","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}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912333
O. Shtonda, S. Loboda, A. Bogomolov
New ceramic compositions based on Na and Ta doped CaCu3Ti4O12 (CCTO) solid solutions were obtained. The synthesis conditions, parameters of crystal structure and low frequency dielectric properties depending on Na and Ta concentrations were investigated. The solid solutions were obtained by substitution of Ca and Ti in the CCTO structure with Na and Ta, respectively, according to the formula Ca1-xNaxCu3Ti4-xTaxO12. The substitution scheme occurs in a whole range of x from 0 to 1. The sintering temperature of Na and Ta doped CCTO ceramics with 90-95% of theoretical density is lower than of undoped CCTO. 1 kHz dielectric permittivity of Ca1-xNaxCu3Ti4-xTaxO12 ceramics depends on x and varies from 2600 to 9700. Dielectric losses tangent is around 0.1.
{"title":"Structure and dielectric properties of Na and Ta doped CaCu3Ti4O12","authors":"O. Shtonda, S. Loboda, A. Bogomolov","doi":"10.1109/OMEE.2014.6912333","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912333","url":null,"abstract":"New ceramic compositions based on Na and Ta doped CaCu<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub> (CCTO) solid solutions were obtained. The synthesis conditions, parameters of crystal structure and low frequency dielectric properties depending on Na and Ta concentrations were investigated. The solid solutions were obtained by substitution of Ca and Ti in the CCTO structure with Na and Ta, respectively, according to the formula Ca<sub>1-x</sub>Na<sub>x</sub>Cu<sub>3</sub>Ti<sub>4-x</sub>Ta<sub>x</sub>O<sub>12</sub>. The substitution scheme occurs in a whole range of x from 0 to 1. The sintering temperature of Na and Ta doped CCTO ceramics with 90-95% of theoretical density is lower than of undoped CCTO. 1 kHz dielectric permittivity of Ca<sub>1-x</sub>Na<sub>x</sub>Cu<sub>3</sub>Ti<sub>4-x</sub>Ta<sub>x</sub>O<sub>12</sub> ceramics depends on x and varies from 2600 to 9700. Dielectric losses tangent is around 0.1.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127488834","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}
Pub Date : 2014-05-26DOI: 10.1109/OMEE.2014.6912334
G. Sokolsky, S. Ivanov, E. Boldyrev, N. Ivanova, L. Vasylechko
Manganese dioxide obtained by electrolytic doping technique was subjected to investigations of influence of cationic additives in an electrolyte on defects in structure and prospectives of improvements in its functionality. The Chabre-Pannetier model was used for this purpose. The results indicate on the variability of γ/β- γ/α-polymorphs intergrowth ratios, and twinning. There is a necessity to expand single phase Chabre-Pannetier model based on ramsdellite structure matrix towards multiphase "open structure" polymorphs that are frequently occurred in electrodeposited samples of manganese dioxide.
{"title":"Toward stimulated by defects functionality in manganese(IV) oxide materials","authors":"G. Sokolsky, S. Ivanov, E. Boldyrev, N. Ivanova, L. Vasylechko","doi":"10.1109/OMEE.2014.6912334","DOIUrl":"https://doi.org/10.1109/OMEE.2014.6912334","url":null,"abstract":"Manganese dioxide obtained by electrolytic doping technique was subjected to investigations of influence of cationic additives in an electrolyte on defects in structure and prospectives of improvements in its functionality. The Chabre-Pannetier model was used for this purpose. The results indicate on the variability of γ/β- γ/α-polymorphs intergrowth ratios, and twinning. There is a necessity to expand single phase Chabre-Pannetier model based on ramsdellite structure matrix towards multiphase \"open structure\" polymorphs that are frequently occurred in electrodeposited samples of manganese dioxide.","PeriodicalId":142377,"journal":{"name":"International Conference on Oxide Materials for Electronic Engineering - fabrication, properties and applications (OMEE-2014)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126437918","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：