Browsing Zinātniskie raksti (CFI) / Scientific articles by Title
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The Effect of the Range of a Modulating Phase Mask on the Retrieval of a Complex Object from Intensity Measurements
(Walter de Gruyter, 2021)In many fields of science, it is often impossible to preserve the information about the phase of the electromagnetic field, and only the information about the magnitude is available. This is known as the phase problem. ... -
Effects of CuO doping on structure, microstructure and dielectric properties of BaTiO3–PbTiO3 solid solution
(Taylor and Francis Ltd., 2019)Ba0.7Pb0.3TiO3 and Ba0.7Pb0.3TiO3+yCuO (y = 0.1 wt%, 0.5 wt%, 1 wt% and 3 wt%) samples were prepared by a solid state reaction method. High purity raw materials were used. Structural properties of the sintered pellets were ... -
Effects of Electron Correlation inside Disordered Crystals
(MDPI, 2022)We propose a novel approach for characterising the electron spectrum of disordered crystals constructed from a Hamiltonian of electrons as well as phonons and a diagram approach for Green’s function. The system’s electronic ... -
Effects of Mn doping on dielectric properties of ferroelectric relaxor PLZT ceramics
(Elsevier B.V., 2017)A series of PLZT (8/65/35) ceramics with different Mn2O3 concentration (0.01, 0.1, 0.3, 1.0, and 3.0% by weight) have been synthesized to figure out its influence on their dielectric properties. The complex dielectric ... -
Effects of Pulsed Electric Field on the Physicochemical and Structural Properties of Micellar Casein
(MDPI, 2023)Pulsed electric field (PEF) as a green processing technology is drawing greater attention due to its eco-friendliness and potential to promote sustainable development goals. In this study, the effects of different electric ... -
Effects of steric encumbrance of iridium(iii) complex core on performance of solution-processed organic light emitting diodes
(Royal Society of Chemistry, 2020)Iridium(iii) complexes are the most frequently applied commercialized green and red emitters for organic light emitting diode (OLED) displays. Throughout years a significant research effort has been devoted to modify these ... -
Efficient ultrafast laser writing with elliptical polarization
(Springer Nature, 2023)Photosensitivity in nature is commonly associated with stronger light absorption. It is also believed that artificial optical anisotropy to be the strongest when created by light with linear polarization. Contrary to ... -
Electric relaxation and Mn3+/Mn4+ charge transfer in Fe-doped Bi12MnO20–BiMn2O5 structural self-composite
(Springer New York LLC, 2017)Fe-doped Bi12MnO20–BiMn2O5 ceramics was sintered at 1130 K for 6 h in ambient air. Two centro-symmetric phases formed thermodynamically stable self-composite material that was deduced from X-ray pattern analysis. The lattice ... -
Electrocaloric Effect in (1−x)(0.8Na0.5Bi0.5TiO3-0.2BaTiO3)− xCaTiO3 Solid Solutions at High Electric Fields
(MDPI, 2022)Recently, promising results were obtained in studies of the electrocaloric effect in thin films. Therefore, research into this effect at high applied electric field values in bulk ferroelectrics is an important task for ... -
Electrochemical exfoliation-streamline method for synthesis of nitrogen doped graphene
(Lithuanian Academy of Sciences Publishers, 2021)Graphene was discovered in the early 21st century, but has already proven itself in many applications – energy, medicine, electronics, food and sports, and more. Functionalization of nanostructured carbon materials with ... -
Electrochemical Growth and Structural Study of the AlxGa1−xAs Nanowhisker Layer on the GaAs Surface
(MDPI, 2023)This work presents a novel, cost-effective method for synthesizing AlxGa1−xAs nanowhiskers on a GaAs surface by electrochemical deposition. The process begins with structuring the GaAs surface by electrochemical etching, ... -
Electromechanical properties in CaTiO3modified Na0.5Bi0.5TiO3-BaTiO3solid solutions above morphotropic phase boundary
(American Institute of Physics Inc., 2022)The structural, electromechanical, and dielectric properties of (1-x)(0.8Na0.5Bi0.5TiO3-0.2BaTiO3)-xCaTiO3 [(1-x) (0.8NBT-0.2BT)-xCT] ceramics are studied as candidates for room temperature actuators with high field-induced ... -
Electromechanical Properties of Ba(1–x)SrxTiO3 Perovskite Solid Solutions from First-Principles Calculations
(ACS Publications, 2017)An enhancement of the piezoelectric properties of lead-free materials, which allow conversion of mechanical energy into electricity, is a task of great importance and interest. Results of first-principles calculations of ... -
Electron Beam-Assisted Synthesis of YAG:Ce Ceramics
(MDPI, 2023)In this work, we present the results of the structure and luminescence properties of YAG:Ce (Y3Al5O12 doped with Ce3+ ions) ceramic samples. Their synthesis was carried out by sintering samples from the initial oxide powders ... -
Electron paramagnetic resonance and photoluminescence investigation of europium local structure in oxyfluoride glass ceramics containing SrF2 nanocrystals
(Elsevier B.V., 2017)Different compositions of europium doped aluminosilicate oxyfluoride glass ceramics prepared in air atmosphere have been studied by electron paramagnetic resonance (EPR) and optical spectroscopy methods. X-ray diffraction ... -
Electronic and Optical Properties of Rocksalt Mg1−xZnxO and Wurtzite Zn1−xMgxO with Varied Concentrations of Magnesium and Zinc
(MDPI, 2022)The structural, electronic and optical properties of rocksalt Mg (Formula presented.) Zn (Formula presented.) O and wurtzite Zn (Formula presented.) Mg (Formula presented.) O with the concentration of Zn and Mg varying ... -
Electronic Band Transitions in γ-Ge3N4
(Korean Institute of Metals and Materials, 2021)Electronic band structure in germanium nitride having spinel structure, γ-Ge3N4, was examined using two spectroscopic techniques, cathodoluminescence and synchrotron-based photoluminescence. The sample purity was confirmed ... -
Electronic Processes in Solid State: Dirac Framework
(Sciendo, 2019)The present paper proposes canonical Dirac framework adapted for application to the electronic processes in solid state. The concern is a spatially periodic structure of atoms distinguished by birth and annihilation of ... -
The electronic properties of SrTiO3-δ with oxygen vacancies or substitutions
(Springer Nature, 2021)The electronic properties, including bandgap and conductivity, are critical for nearly all applications of multifunctional perovskite oxide ferroelectrics. Here we analysed possibility to induce semiconductor behaviour in ... -
The Electronic Structures and Energies of the Lowest Excited States of the Ns0, Ns+, Ns− and Ns-H Defects in Diamond
(MDPI, 2023)This paper reports the energies and charge and spin distributions of the mono-substituted N defects, N0s, N+s, N−s and Ns-H in diamonds from direct Δ-SCF calculations based on Gaussian orbitals within the B3LYP function. ...