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Article
Structure Formation of Zinc-Substituted Hydroxyapatite during Mechanochemical Synthesis
Zinc-substituted hydroxyapatite samples with a preset degree of substitution (Са10 –хZnx(PO4)6(OH)2, x = 0.1–2.0) have been synthesized by a mechanochemical method. The composition of starting components ((Zn(H2P...
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Article
Synthesis and Luminescence Properties of Tb3+-Doped Aluminum Oxynitride
We report an experimental study concerned with the synthesis and luminescence properties of Al5O6N aluminum oxynitride doped with Tb3+ in the concentration range 0.025–0.5 at %. All of the samples, prepared by fi...
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Article
Synthesis of Highly Dispersed 2D Aluminum Cobalt Oxyhydroxide Compounds Based on Microwave-Activation Products of Crystalline Gibbsite
We have studied interaction between the microwave activation product of gibbsite and an aqueous cobalt nitrate solution at room temperature, atmospheric pressure, and pH 8.0 ± 0.3. The results demonstrate that...
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Article
Radiation-Induced Effects in Ce3+- and Eu2+-Doped Al5O6N
Polycrystalline Al5O6N samples have been prepared by sol–gel synthesis followed by carbothermal reduction and nitridation. X-ray luminescence (XRL) spectra and thermoluminescence (TL) curves of Ce3+- and Eu2+-dop...
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Article
Sol–gel synthesis of 2D and 3D nanostructured YSZ:Yb3+ ceramics
This paper presents results of a detailed study of fundamental aspects of the formation of 2D and 3D nanostructured YSZ:Yb3+ ceramics with a cubic structure through a key synthesis step in aqueous solutions of zi...
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Article
Effect of dopant concentration on the phase composition and luminescence properties of Eu2+- and Ce3+-doped AlONs
Herein we report the synthesis of aluminum oxynitride (Al5O6N) doped with Eu2+ and Ce3+ and examine the effects of the dopant concentration and the nature of the rare-earth-containing precursor (europium and ceri...
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Article
Preparation of a copper-polymer composite through the thermolysis of copper(II) succinate
A procedure has been proposed for the preparation of copper/polymer composites through Cu(C4H4O4) · H2O succinate thermolysis. Three types of copper nanoparticles have been incorporated into a fibrous carbon-poly...
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Article
Preparation and luminescent properties of rubidium and cesium vanadates
Four rubidium and cesium vanadates, with the compositions Rb5V3O10, Rb3V5O14, Cs5V3O10, and Cs2V4O11, have been synthesized and identified, and their thermal stability ranges have been determined. Their spectrosc...
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Article
Preparation of metal-polymer composites through the thermolysis of Fe(II), Co(II), and Ni(II) maleates
Metal-polymer composites have been prepared through the thermolysis of the [M1(H2O)2(C4H2O4)] · H2O (M1 = Co(II), Ni(II)) neutral maleates and [M2(H2O)4(C4H3O4)2] (M2 = Fe(II), Co(II), Ni(II)) acid maleates. In t...
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Article
Thermal and luminescent properties of M2Zn(VO3)4 (M = Rb, Cs)
We have developed processes for the synthesis of the Rb2Zn(VO3)4 and Cs2Zn(VO3)4 tetrametavanadates. Rb2Zn(VO3)4 has been prepared by solid-state reaction (350°C) between presynthesized RbVO3 and ZnV2O6 powders, ...
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Article
Synthesis and cathodoluminescence characteristics of europium-doped Ca-sialons
Using solid-state reactions and a combination of carbothermal reduction-nitridation with solgel processing, we have synthesized a number of oxynitride phases: Eu2+-doped Ca-sialons. We have measured the pulsed ca...
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Article
Structure and luminescent properties of Cs2Sr(VO3)4:Mn2+
We have developed a procedure for thermally stimulated synthesis of a cesium strontium metavanadate, Cs2Sr(VO3)4:Mn2+ (0.01, 0.50, 1.00, 5.00 at % Mn2+), using MnO-containing starting mixtures. The EPR spectrum o...
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Article
Thermochemical and luminescent properties of RbVO3, CsVO3, and Rb0.5Cs0.5VO3
RbVO3, CsVO3, and Rb0.5Cs0.5VO3 have been synthesized by the Pechini process. The vanadates have an orthorhombic structure (sp. gr. Pbcm), melt congruently in the range 650–530°C, and undergo a reversible phase t...
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Article
Thermochemical and luminescent properties of the K2MgV2O7 and M2CaV2O7 (M = K, Rb, Cs) vanadates
We have studied the compounds K2MgV2O7 and M2CaV2O7 with M = K, Rb, and Cs. These vanadates melt incongruently in the range 635–717°C. Cooling their decomposition products to room temperature leads to the formati...
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Article
Thermal stability and cathodoluminescence of potassium strontium vanadates
We have studied the thermal stability of five potassium strontium vanadates: KSr(VO3)3, K2Sr(VO3)4, K4Sr(VO3)6, K6Sr(VO3)8, and KSrVO4. The double orthovanadate undergoes a reversible polymorphic transformation a...