A5005187174- Luminescence Properties of Advanced Materials
- Bone Tissue Engineering Materials
- Glass properties and applications
- Multiferroics and related materials
- Ferroelectric and Piezoelectric Materials
- Magnetic and transport properties of perovskites and related materials
- Physics of Superconductivity and Magnetism
- Layered Double Hydroxides Synthesis and Applications
- Advanced Condensed Matter Physics
- Pigment Synthesis and Properties
- Chemical Synthesis and Characterization
- Cultural Heritage Materials Analysis
- Magneto-Optical Properties and Applications
- Solid State Laser Technologies
- Magnesium Oxide Properties and Applications
- Dental materials and restorations
- Mesoporous Materials and Catalysis
- Catalytic Processes in Materials Science
- Nuclear materials and radiation effects
- Crystal Structures and Properties
- Microwave Dielectric Ceramics Synthesis
- Electronic and Structural Properties of Oxides
- Photorefractive and Nonlinear Optics
- Lanthanide and Transition Metal Complexes
- Dental Implant Techniques and Outcomes
Vilnius University
2015-2024
Centre de Géosciences
2019-2020
Faculty (United Kingdom)
2016
University of Tübingen
2005-2007
Stockholm University
1995-1998
Rice University
1996-1997
TDA Research (United States)
1996
International Superconductivity Technology Center
1995
Nanocrystalline yttrium aluminium garnet (YAG, Y3Al5O12) and Ce-doped YAG ceramics were synthesized by two 'soft chemistry' sol–gel processes using (i) mixtures of inorganic salts or oxides (ii) alkoxides the respective elements. In first approach metal ions, generated dissolving nitrates in acetic acid and/or water, complexed ethylene glycol to obtain precursors for pure doped samples. alkoxide route monolithic gels obtained hydrolysis condensation a compositional mixture Al, Y Ce PriOH...
Previous synthesis routes created apatites in low crystallinity and high states, but a wider range will extend the design capabilities of for hard tissue replacements. While are more conventional, this work investigated lower variations from an amorphous state to apatite. Carbonated hydroxyapatite was prepared by precipitating phase followed crystallization at 650 °C slow (5 min−1) fast heating rates (60 min−1). The effect processing conditions on structural changes evaluated thermal...
A series of polycrystalline Li3Ba2La3−xEux(MoO4)8 samples were prepared by the conventional solid-state reaction. The phase formation was investigated X-ray diffraction measurements. luminescence spectra and decay curves studied as a function Eu3+ concentration temperature. It turned out that optical band gap undoped molybdates is at 3.65 eV. quantum efficiency (QE) doped luminescent materials increases with increasing almost 100% QE obtained for those 70, 80, or 90% Eu3+. sample containing...
We report the sol-gel synthesis and characterization of far-red garnet phosphors Gd3Ga5O12 (GGG:Cr), Y3Ga5O12 (YGG:Cr), Lu3Ga5O12 (LGG:Cr), Gd3Sc2Ga3O12 (GSGG:Cr) doped with different chromium (III) concentration (3, 5, 8 mol. %). The morphological luminescence properties annealed at temperatures (1000°C, 1300°C, 1400°C, 1500°C) were examined using x-ray diffraction, scanning electron microscopy, photoluminescence (PL), PL excitation (PLE) spectroscopy, by measurements diffuse reflection,...
Abstract We studied magnetostatic response of the Bi 0.9 La 0.1 FeO 3 – KBr composites (BLFO-KBr) consisting nanosized (≈100 nm) ferrite (BLFO) conjugated with fine grinded ionic conducting KBr. When fraction is rather small (less than 15 wt%) magnetic composite very weak and similar to that observed for BLFO (pure matrix without 1-x x has no as anticipated). However, when increases above 15%, changes substantially field dependence magnetization reveals ferromagnetic-like hysteresis loop a...
In this study, the effects of sodium lauryl sulfate and various amino acids (DL-aspartic acid, dodecanedioic suberic acid) on formation calcium-deficient hydroxyapatite via hydrolysis α-tricalcium phosphate (α-TCP) were investigated; moreover, a combined effect these additives ethylene glycol as synthesis medium was also estimated. The reaction performed in solutions containing different concentrations aqueous mixed aqueous–organic media under solvothermal conditions. It demonstrated that...
Abstract Three layered double hydroxides (LDH) [Mg1−xAlx(OH)2]x+(Am−)x/m]·nH2O and [MII 1−xMIII x (OH)2]x+(Am−)x/m]·nH2O (MII — Mg, Co, Ni; MIII Al; A CO3 2−) were successfully synthesized by the low supersaturation method. The as-synthesized LDH samples thermally decomposed derived mixed metal oxides reformed back to structures in water magnesium nitrate media at different temperatures. All characterized X-ray diffraction (XRD) analysis, thermogravimetric (TG) fluorescence (XRF) analysis...
Abstract Single-phase magnesium-aluminium layered double hydroxide (LDH) intercalated with dihydrogen phosphate was successfully produced by hydration of nanopowder the respective mixed metal oxide (MMO) obtained using sol-gel based method followed a two-step anion exchange hydroxide-to-chloride and chloride-to-phosphate. The MMO cation ratio Mg/Al = 2:1 prepared aqueous method. Processes parent Mg 2 Al-OH LDH formation successive anion-exchanges, ОН − → Cl H PO 4 , were considerably...
The present work investigates the crystallization and phase evolution of amorphous calcium phosphate (ACP) partially substituted with smaller (Mg2+, Zn2+) larger (Sr2+, Ba2+) divalent ions in range from 1 to 10 mol % (M/P = 1.5:1). It has been demonstrated that ACP tricalcium (TCP) subsequent transformations between TCP polymorphs strongly depend on nature concentration substituents matrix. Two different effects induced by presence foreign were observed. Substitution did not affect...