Pub Date : 2012-09-01DOI: 10.1109/OMEE.2012.6464822
N. Ohon, A. Pashuk, S. Hoffmann, L. Vasylechko
Phase and structural behaviour in the NdAlO3-EuAlO3 system has been studied in a whole concentration range. Depending on x two kinds of solid solutions Nd1−xEuxAlO3 one with rhombohedral (x ≤ 0.15) and one with orthorhombic (x ≥ 0.25) symmetry exist at room temperature. A morphotropic phase transition occurs at x ≈ 0.20, where the co-existence of both phases was observed. First-order structural phase transition Pbnm↔R 3 c has been detected in Nd0.6Eu0.4AlO3 at 627 K both from in situ high-temperature X-ray synchrotron powder diffraction and thermal analysis data.
{"title":"Concentration and temperature-driven phase transitions in the NdAlO3-EuAlO3 system","authors":"N. Ohon, A. Pashuk, S. Hoffmann, L. Vasylechko","doi":"10.1109/OMEE.2012.6464822","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464822","url":null,"abstract":"Phase and structural behaviour in the NdAlO<inf>3</inf>-EuAlO<inf>3</inf> system has been studied in a whole concentration range. Depending on x two kinds of solid solutions Nd<inf>1−x</inf>Eu<inf>x</inf>AlO<inf>3</inf> one with rhombohedral (x ≤ 0.15) and one with orthorhombic (x ≥ 0.25) symmetry exist at room temperature. A morphotropic phase transition occurs at x ≈ 0.20, where the co-existence of both phases was observed. First-order structural phase transition Pbnm↔R 3 c has been detected in Nd<inf>0.6</inf>Eu<inf>0.4</inf>AlO<inf>3</inf> at 627 K both from in situ high-temperature X-ray synchrotron powder diffraction and thermal analysis data.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"477 1","pages":"120-121"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77236616","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 : 2012-09-01DOI: 10.1109/OMEE.2012.6464778
M. Yatskin, I. Zatovsky, N. Strutynska, V. Baumer, N. Slobodyanik
KMg0.09Fe1.91(PO4)2 is isotypic with KMIIFe(PO4)2 (MII - Fe, Cu) (monoclinic system, space group P 21/n). The framework is built up from [FeO5] and [Fe(Mg)O6] polyhedra sharing vertices, edges and connected by two types of bridging PO4 tetrahedra. The K atoms are nine-coordinated and are located in hexagonal channels running along the direction of c-axis.
{"title":"Phase formation in the flux systems K2O-P2O5-Fe2O3-MIIO-MoO3","authors":"M. Yatskin, I. Zatovsky, N. Strutynska, V. Baumer, N. Slobodyanik","doi":"10.1109/OMEE.2012.6464778","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464778","url":null,"abstract":"KMg<inf>0.09</inf>Fe<inf>1.91</inf>(PO<inf>4</inf>)<inf>2</inf> is isotypic with KM<sup>II</sup>Fe(PO<inf>4</inf>)<inf>2</inf> (M<sup>II</sup> - Fe, Cu) (monoclinic system, space group P 2<inf>1</inf>/n). The framework is built up from [FeO<inf>5</inf>] and [Fe(Mg)O<inf>6</inf>] polyhedra sharing vertices, edges and connected by two types of bridging PO<inf>4</inf> tetrahedra. The K atoms are nine-coordinated and are located in hexagonal channels running along the direction of c-axis.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"52 1","pages":"109-110"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84486606","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 : 2012-09-01DOI: 10.1109/OMEE.2012.6464897
S. Nedilko, O. Chukova, V. Scherbatskii, V. Polubinskii, Y. Titov
The Sr3LaTa3O12 layered powdered perovskite-like compounds were obtained by heat treatment of co-precipitated hydroxy-carbonates. Photoluminescent (PL) properties of the Sr3LaTa3O12 were investigated at the first time. Strongly overlapped components peaked at 535, 585 and 630 nm compos emission spectra of the materials under study. The luminescent data were analyzed and preliminary assumptions about origin of given spectra have been made.
{"title":"Synthesis and luminescent investigation of the Sr3LaTa3O12 layered perovskite","authors":"S. Nedilko, O. Chukova, V. Scherbatskii, V. Polubinskii, Y. Titov","doi":"10.1109/OMEE.2012.6464897","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464897","url":null,"abstract":"The Sr<inf>3</inf>LaTa<inf>3</inf>O<inf>12</inf> layered powdered perovskite-like compounds were obtained by heat treatment of co-precipitated hydroxy-carbonates. Photoluminescent (PL) properties of the Sr<inf>3</inf>LaTa<inf>3</inf>O<inf>12</inf> were investigated at the first time. Strongly overlapped components peaked at 535, 585 and 630 nm compos emission spectra of the materials under study. The luminescent data were analyzed and preliminary assumptions about origin of given spectra have been made.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"70 1","pages":"209-210"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85087565","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 : 2012-09-01DOI: 10.1109/OMEE.2012.6464851
D. Sydorov, S. Mykhailov, T. Motronyuk, Y. Piryatinski, P. Smertenko, A. Pud
We present here results of spectral (UV-Vis, PL), morphological (XRD, SEM) and voltammetric (I-V) characterizations of electrochemically deposited nanostructured ZnO layers at transparent ITO electrodes. For the first time the deposition was run in a presence of tetraalkylam-monium hydroxides (TAAHs) as organic templates for comparison with the known one dye eosin Y. We find that the spectral and electrophysical properties of the ZnO layers synthesized when using the both types of the templates are quite similar that suggests applicability of TAAHs for the synthesis of nanostructured ZnO.
{"title":"Tetraalkylammonium hydroxide template effects in electrodeposited nanostructured ZnO layers","authors":"D. Sydorov, S. Mykhailov, T. Motronyuk, Y. Piryatinski, P. Smertenko, A. Pud","doi":"10.1109/OMEE.2012.6464851","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464851","url":null,"abstract":"We present here results of spectral (UV-Vis, PL), morphological (XRD, SEM) and voltammetric (I-V) characterizations of electrochemically deposited nanostructured ZnO layers at transparent ITO electrodes. For the first time the deposition was run in a presence of tetraalkylam-monium hydroxides (TAAHs) as organic templates for comparison with the known one dye eosin Y. We find that the spectral and electrophysical properties of the ZnO layers synthesized when using the both types of the templates are quite similar that suggests applicability of TAAHs for the synthesis of nanostructured ZnO.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"18 1","pages":"43-44"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83810078","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 : 2012-09-01DOI: 10.1109/OMEE.2012.6464858
I. Bobowska, A. Opasinska, A. Wypych, P. Wojciechowski
This work presents investigations conducted in the field of preparation of a hybrid nanocomposite composed of the vertically aligned ZnO nanorod arrays coated with the layered precursor of TiO2 (LPT). Effects of the elevated temperature on the structure and morphology evolution of the ZnO nanorod array and their hybrid nanocomposites are described.
{"title":"Modification of ZnO nanorod arrays with layered precursor of TiO2","authors":"I. Bobowska, A. Opasinska, A. Wypych, P. Wojciechowski","doi":"10.1109/OMEE.2012.6464858","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464858","url":null,"abstract":"This work presents investigations conducted in the field of preparation of a hybrid nanocomposite composed of the vertically aligned ZnO nanorod arrays coated with the layered precursor of TiO2 (LPT). Effects of the elevated temperature on the structure and morphology evolution of the ZnO nanorod array and their hybrid nanocomposites are described.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"26 1","pages":"29-30"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81547920","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 : 2012-09-01DOI: 10.1109/OMEE.2012.6464901
A. Kamińska, Anna Dużyńska, M. Berkowski, A. Suchocki
Studies of the spectroscopic properties of Ce3+ dopant in bulk Gd3Ga5O12:Ce crystal under pressure are presented. In spite of strong inter-shell 4f → 5d absorption bands at ambient pressure the cerium luminescence in Gd3Ga5O12 is entirely quenched even at low temperature. It has been shown that applying pressure allows for recovering the 5d → 4f radiative transitions. Further increase of pressure improves the emission efficiency. This effect is analyzed in terms of two possible phenomena: (i) by pressure-induced electronic crossover of the excited 5d energy level of the Ce3+ with the conduction band bottom of host crystal, and (ii) by decrease of electron-lattice coupling with increasing pressure, resulting in reducing of Stokes shift and non-radiative transitions between the low vibrational levels of the 5d state and high vibrational levels of the ground 4f state.
{"title":"Spectroscopy of gadolinium gallium garnet doped with cerium under high hydrostatic pressure","authors":"A. Kamińska, Anna Dużyńska, M. Berkowski, A. Suchocki","doi":"10.1109/OMEE.2012.6464901","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464901","url":null,"abstract":"Studies of the spectroscopic properties of Ce<sup>3+</sup> dopant in bulk Gd<inf>3</inf>Ga<inf>5</inf>O<inf>12</inf>:Ce crystal under pressure are presented. In spite of strong inter-shell 4f → 5d absorption bands at ambient pressure the cerium luminescence in Gd<inf>3</inf>Ga<inf>5</inf>O<inf>12</inf> is entirely quenched even at low temperature. It has been shown that applying pressure allows for recovering the 5d → 4f radiative transitions. Further increase of pressure improves the emission efficiency. This effect is analyzed in terms of two possible phenomena: (i) by pressure-induced electronic crossover of the excited 5d energy level of the Ce<sup>3+</sup> with the conduction band bottom of host crystal, and (ii) by decrease of electron-lattice coupling with increasing pressure, resulting in reducing of Stokes shift and non-radiative transitions between the low vibrational levels of the 5d state and high vibrational levels of the ground 4f state.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"115 1","pages":"198-199"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90100562","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 : 2012-09-01DOI: 10.1109/OMEE.2012.6464852
K. Gas, E. Dynowska, M. Lukasiewicz, M. Wiater, B. Witkowski, E. Guziewicz, M. Godlewski, A. Kamińska, R. Hołyst, T. Wojtowicz, W. Szuszkiewicz
Micro-Raman measurements were performed to study the vibrational properties of molecular beam epitaxy grown ZnTe nanowires (NWs) with atomic layer deposited (Zn,Co) oxides shell. A significant decrease of relative intensity of structures related to the ZnTe (NWs core) and Te (precipitates) phonons, resulting from the overgrowth of the NWs by the oxide shells is observed. The dependence of the Raman spectra on the laser power is shown and discussed. It is demonstrated that the crystallization of amorphous oxide shell and formation of Co3O4 crystals can be induced by increasing laser power during the measurements.
{"title":"ZnTe nanowires overgrown by atomic layer deposited (Zn,Co) oxides: Raman scattering studies","authors":"K. Gas, E. Dynowska, M. Lukasiewicz, M. Wiater, B. Witkowski, E. Guziewicz, M. Godlewski, A. Kamińska, R. Hołyst, T. Wojtowicz, W. Szuszkiewicz","doi":"10.1109/OMEE.2012.6464852","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464852","url":null,"abstract":"Micro-Raman measurements were performed to study the vibrational properties of molecular beam epitaxy grown ZnTe nanowires (NWs) with atomic layer deposited (Zn,Co) oxides shell. A significant decrease of relative intensity of structures related to the ZnTe (NWs core) and Te (precipitates) phonons, resulting from the overgrowth of the NWs by the oxide shells is observed. The dependence of the Raman spectra on the laser power is shown and discussed. It is demonstrated that the crystallization of amorphous oxide shell and formation of Co3O4 crystals can be induced by increasing laser power during the measurements.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"45 1","pages":"41-42"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73669280","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 : 2012-09-01DOI: 10.1109/OMEE.2012.6464855
T. Krajewski, P. Smertenko, G. Luka, L. Wachnicki, A. Cherevko, G. Olkhovik, A. Zakrzewski, M. Godlewski, E. Guziewicz
This paper reports on the Ag/HfO2/ZnO/TiAu Schottky structures, in which the semiconducting ZnO and HfO2 layers are obtained using the low temperature Atomic Layer Deposition (ALD) method. Basing on the thermionic emission, differential and injection approaches an optimal thickness of HfO2 capping layer for the ZnO-based diode was found to be about 2.5 nm.
{"title":"Electrophysical diagnostics of Ag/HfO2/ZnO/TiAu structures","authors":"T. Krajewski, P. Smertenko, G. Luka, L. Wachnicki, A. Cherevko, G. Olkhovik, A. Zakrzewski, M. Godlewski, E. Guziewicz","doi":"10.1109/OMEE.2012.6464855","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464855","url":null,"abstract":"This paper reports on the Ag/HfO2/ZnO/TiAu Schottky structures, in which the semiconducting ZnO and HfO2 layers are obtained using the low temperature Atomic Layer Deposition (ALD) method. Basing on the thermionic emission, differential and injection approaches an optimal thickness of HfO2 capping layer for the ZnO-based diode was found to be about 2.5 nm.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"15 4 1","pages":"35-36"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78301447","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 : 2012-09-01DOI: 10.1109/OMEE.2012.6464879
M. Brodyn, V. Gayvoronsky
Efficient impact of the incorporated metal oxides nanoparticles on self-action effects and optical harmonics generation was studied in single crystalline KDP matrix. It was shown possibility to enhance laser frequency conversion efficiency due to the anatase giant optical response manifestation.
{"title":"Effect of incorporated metal oxides nanoparticles on quadric and cubic nonlinear optical response of the single crystal KDP matrix","authors":"M. Brodyn, V. Gayvoronsky","doi":"10.1109/OMEE.2012.6464879","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464879","url":null,"abstract":"Efficient impact of the incorporated metal oxides nanoparticles on self-action effects and optical harmonics generation was studied in single crystalline KDP matrix. It was shown possibility to enhance laser frequency conversion efficiency due to the anatase giant optical response manifestation.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"73 1","pages":"197-197"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79037555","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 : 2012-09-01DOI: 10.1109/OMEE.2012.6464820
V. Adamiv, I. Bolesta, Y. Burak, O. Kushnir, I. Karbovnyk
The results of atomic force microscopy (AFM) studies of surface of the lithium tetraborate glasses doped with Cu, Ni and annealed in the hydrogen (H2) atmosphere are presented.
用原子力显微镜(AFM)研究了掺杂Cu、Ni并在H2气氛中退火的四硼酸锂玻璃的表面。
{"title":"AFM study of Ni- and Cu-doped Li2B4O7 glass surface","authors":"V. Adamiv, I. Bolesta, Y. Burak, O. Kushnir, I. Karbovnyk","doi":"10.1109/OMEE.2012.6464820","DOIUrl":"https://doi.org/10.1109/OMEE.2012.6464820","url":null,"abstract":"The results of atomic force microscopy (AFM) studies of surface of the lithium tetraborate glasses doped with Cu, Ni and annealed in the hydrogen (H2) atmosphere are presented.","PeriodicalId":6332,"journal":{"name":"2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)","volume":"39 1","pages":"124-125"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74576936","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}
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