Journals >Journal of Advanced Dielectrics
Contents
2022
Volume: 12 Issue 1
8 Article(s)
Export citation format
Research Articles
Preparation and properties of
K. M. Zhidel, and A. V. Pavlenko
In this paper, we report the successful growth of 0.5BiFeO3–0.5PbFe0.5Nb0.5O3/SrTiO3/Si(001) heterostructure using RF-cathode sputtering in an oxygen atmosphere. The deposited films have been investigated by X-ray diffractometry and spectroscopic ellipsometry (SE). 0.5BiFeO3–0.5PbFe0.5Nb0.5O3 films on silicon substrateIn this paper, we report the successful growth of 0.5BiFeO3–0.5
Journal of Advanced Dielectrics
- Publication Date: Oct. 28, 2022
- Vol. 12, Issue 1, 2160002 (2022)
Grain landscape and dielectric properties of ceramics based on sodium, calcium, strontium niobates, depending on the synthesis and sintering conditions, and mechanical processing
J. Y. Zubarev, A. V. Nazarenko, A. V. Nagaenko, and L. A. Reznitchenko
The properties studying results of ceramics based on strontium, calcium and sodium niobates, which vary from the conditions of synthesis, sintering, and mechanical processing, are presented. The evolution of the grain structure of objects is traced depending on their phase filling during concentration changes in the coThe properties studying results of ceramics based on strontium, calcium and sodium niobates, which vary from the conditions of synthesis, sintering, and mechanical processing, are presented. The evolution of the grain structure of objects is traced depending on their phase filling during concentration changes in the composition and thermodynamic prehistory (preparation conditions).The properties studying results of ceramics based on strontium, calcium and sodium niobates, which vary from the conditions of synthesis, sintering, and mechanical processing, are presented. The evolution of the grain structure of objects is traced depending on their phase filling during concentration changes in the composition and thermodynamic prehistory (preparation conditions)..
Journal of Advanced Dielectrics
- Publication Date: Oct. 28, 2022
- Vol. 12, Issue 1, 2160010 (2022)
Chemical ordering and magnetic phase transitions in multiferroic –AFe Sb O (A-Pb, Sr) solid solutions fabricated by a high-pressure synthesis
S. I. Raevskaya, N. M. Olekhnovich, A. V. Pushkarev, Y. V. Radyush... and M. A. Malitskaya|Show fewer author(s)
Ceramic samples of BiFeO3-based perovskite solid solutions with the highly ordered complex perovskites PbFe1/2Sb1/2O3(PFS) and SrFe1/2Sb1/2O3 (SFS) were obtained using high-pressure synthesis at 4–6 GPa. Mössbauer studies revealed that BiFeO3-SFS compositions are characterized by a larger compositional inhomogeneiCeramic samples of BiFeO3-based perovskite solid solutions with the highly ordered complex perovskites
Journal of Advanced Dielectrics
- Publication Date: Oct. 28, 2022
- Vol. 12, Issue 1, 2160011 (2022)
Studying of dielectric spectra of Mn O
A. V. Nazarenko, A. V. Pavlenko, and Y. I. Yurasov
This work presents the results of studying the electrophysical properties of the YCu0.15Mn0.85O3 solid solution in the range of temperatures of T = 26–400∘C and frequency range of f = 102–105 Hz. A model description of the revealed dispersion of dielectric parameters in the material is made. The nonclassical modified HThis work presents the results of studying the electrophysical properties of the
Journal of Advanced Dielectrics
- Publication Date: Oct. 28, 2022
- Vol. 12, Issue 1, 2160013 (2022)
Synthesis of ZnO nanorods for piezoelectric resonators and sensors
A. L. Nikolaev, M. A. Kazmina, N. V. Lyanguzov, K. G. Abdulvakhidov, and E. M. Kaidashev
Efficiency of the piezoelectric chemisensors may be considerably enhanced by use of zinc oxide nanorods as sensing elements. ZnO nanorod arrays being good piezoelectric materials possess large surface area, which provides extra benefits for chemisorption and photodetection. Highly oriented nanorod arrays are typically Efficiency of the piezoelectric chemisensors may be considerably enhanced by use of zinc oxide nanorods as sensing elements. ZnO nanorod arrays being good piezoelectric materials possess large surface area, which provides extra benefits for chemisorption and photodetection. Highly oriented nanorod arrays are typically prepared onto highly crystalline substrates, whereas the nanorods growth onto metal contacts meets significant technological difficulties. In this paper, we report on carbothermal, electrochemical, and hydrothermal techniques of ZnO nanorod arrays synthesis on metal contacts. The optical and structural properties of the obtained nanorods were studied using scanning electron microscopy, X-ray diffraction (XRD), Raman spectroscopy, and luminescence spectroscopy. A reliable technique was developed for obtaining ohmic contact with the grown nanorods. I–U curves of prepared contact were studied. Carbothermal synthesis made it possible to obtain the most crystallinely perfect, homogeneous, and dense arrays of nanorods and control the concentration of point defects by changing the synthesis parameters over a wide range. The electrochemical synthesis demonstrated excellent results for synthesis of ZnO nanorods on the surface of resonator electrodes.Efficiency of the piezoelectric chemisensors may be considerably enhanced by use of zinc oxide nanorods as sensing elements. ZnO nanorod arrays being good piezoelectric materials possess large surface area, which provides extra benefits for chemisorption and photodetection. Highly oriented nanorod arrays are typically prepared onto highly crystalline substrates, whereas the nanorods growth onto metal contacts meets significant technological difficulties. In this paper, we report on carbothermal, electrochemical, and hydrothermal techniques of ZnO nanorod arrays synthesis on metal contacts. The optical and structural properties of the obtained nanorods were studied using scanning electron microscopy, X-ray diffraction (XRD), Raman spectroscopy, and luminescence spectroscopy. A reliable technique was developed for obtaining ohmic contact with the grown nanorods. I–U curves of prepared contact were studied. Carbothermal synthesis made it possible to obtain the most crystallinely perfect, homogeneous, and dense arrays of nanorods and control the concentration of point defects by changing the synthesis parameters over a wide range. The electrochemical synthesis demonstrated excellent results for synthesis of ZnO nanorods on the surface of resonator electrodes..
Journal of Advanced Dielectrics
- Publication Date: Oct. 28, 2022
- Vol. 12, Issue 1, 2160020 (2022)
Effect of lithium carbonate modification on the ferroelectric phase transition diffusion in lead ferroniobate ceramics
A. A. Pavelko, A. V. Pavlenko, and L. A. Reznichenko
The paper discusses the features of the effect of modification with lithium carbonate on the dielectric dispersion of lead ferroniobate ceramics. The modifier has been previously shown to change the ways of the recrystallization sintering and therefore reduce the sintering temperature of the ceramics, increase their avThe paper discusses the features of the effect of modification with lithium carbonate on the dielectric dispersion of lead ferroniobate ceramics. The modifier has been previously shown to change the ways of the recrystallization sintering and therefore reduce the sintering temperature of the ceramics, increase their average grain size, and improve their dielectric and piezoelectric properties. In this study, the emphasis is placed on the analysis of the diffusion effects of the ferroelectric phase transition upon such modification considered from the standpoint of the chemical specifics of the modifier and its location in the structure of the parent compound.The paper discusses the features of the effect of modification with lithium carbonate on the dielectric dispersion of lead ferroniobate ceramics. The modifier has been previously shown to change the ways of the recrystallization sintering and therefore reduce the sintering temperature of the ceramics, increase their average grain size, and improve their dielectric and piezoelectric properties. In this study, the emphasis is placed on the analysis of the diffusion effects of the ferroelectric phase transition upon such modification considered from the standpoint of the chemical specifics of the modifier and its location in the structure of the parent compound..
Journal of Advanced Dielectrics
- Publication Date: Oct. 28, 2022
- Vol. 12, Issue 1, 2160021 (2022)
Binary perovskite solid solutions and trends in their phase transitions temperatures variation
G. A. Geguzina, I. G. Popova, and A. E. Panich
Some of the known binary ABO3perovskites with ferro- (FE) or antiferroelectric (AFE) at TC and different magnetic phase transitions (PT): ferro-and antiferromagnetic at TN and also some of their solid solutions are considered. Some correlations between their FE or AFE and/or magnetic PTs temperatures, on the one hand, Some of the known binary ABO3perovskites with ferro- (FE) or antiferroelectric (AFE) at
Journal of Advanced Dielectrics
- Publication Date: Oct. 28, 2022
- Vol. 12, Issue 1, 2160022 (2022)
Structure, microstructure, dielectric and piezoelectric properties of (1−x–y)
E. I. Sitalo, N. A. Boldyrev, L. A. Shilkina, A. V. Nazarenko... and L. A. Reznichenko|Show fewer author(s)
Ceramics of quasi-binary concentration section (x = 0.50, 0.1 ≤y≤ 0.2, Δy = 0.025) of the ternary solid solution system (1−x−y)BiFeO3–xPbFe0.5Nb0.5O3–yPbTiO3 were prepared by the conventional solid-phase reaction method. By using X-ray diffraction technique, the phase diagram of the system was constructed, which was shCeramics of quasi-binary concentration section (
Journal of Advanced Dielectrics
- Publication Date: Oct. 28, 2022
- Vol. 12, Issue 1, 2160023 (2022)
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20