Browsing Zinātniskie raksti (CFI) / Scientific articles by Author "Zarkov, Aleksej"
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Fe and Zn co-substituted beta-tricalcium phosphate (β-TCP): Synthesis, structural, magnetic, mechanical and biological properties
Sinusaite, Lauryna; Popov, Anton; Antuzevics, Andris; Mazeika, Kestutis; Baltrunas, Dalis; Yang, Jen Chang; Shi, Shengfang; Sekino, Tohru; Kareiva, Aivaras; Zarkov, Aleksej (Elsevier, 2020)In the present work, Fe3+ and Zn2+ co-substituted β-tricalcium phosphate (β-TCP) has been synthesized by wet co-precipitation method. Co-substitution level in the range from 1 to 5 mol% has been studied. Thermal decomposition ... -
Investigation of lanthanum substitution effects in yttrium aluminium garnet: importance of solid state NMR and EPR methods
Laurikenas, Andrius; Sakalauskas, Danas; Marsalka, Arunas; Raudonis, Rimantas; Antuzevics, Andris; Balevicius, Vytautas; Zarkov, Aleksej; Kareiva, Aivaras (Springer, 2020-12-06)In this study, yttrium aluminium garnet (YAG) specimens in which yttrium was partially substituted by lanthanum Y3-xLaxAl5O12 (YLaAG) were prepared by an aqueous sol-gel method. YLaAG samples were analyzed by X-ray diffraction ... -
Solvothermal Synthesis of Calcium Hydroxyapatite via Hydrolysis of Alpha-Tricalcium Phosphate in the Presence of Different Organic Additives
Karalkeviciene, Rasa; Raudonyte-Svirbutaviciene, Eva; Zarkov, Aleksej; Yang, Jen-Chang; Popov, Anatoli I.; Kareiva, Aivaras (MDPI, 2023)In this study, the effects of sodium lauryl sulfate and various amino acids (DL-aspartic acid, dodecanedioic acid, and suberic acid) on the formation of calcium-deficient hydroxyapatite via hydrolysis of α-tricalcium ... -
Study of Metal Leaching from Printed Circuit Boards by Improved Electrochemical Hydrochlorination Technique Using Alternating Current
Serga, Vera; Zarkov, Aleksej; Shishkin, Andrei; Elsts, Edgars; Melnichuks, Maksims; Maiorov, Mikhail; Blumbergs, Ervins; Pankratov, Vladimir (MDPI, 2023)This paper presents the results of the leaching of metals from computer PCBs by electrochemical hydrochlorination using alternating current (AC) with an industrial frequency (50 Hz). Leaching was carried out with a ... -
Synthesis and luminescent properties of Mn-doped alpha-tricalcium phosphate
Sinusaite, Lauryna; Antuzevics, Andris; Popov, Anatoli I.; Rogulis, Uldis; Misevicius, Martynas; Katelnikovas, Arturas; Kareiva, Aivaras; Zarkov, Aleksej (Elsevier, 2021)In this work, a series of Mn2+-doped α-tricalcium phosphate (α-TCP) powders was synthesized by wet co-precipitation method followed by high-temperature annealing and thermal quenching. It was shown that Mn2+-doped α-TCP ... -
Synthesis, structural and luminescent properties of Mn-doped calcium pyrophosphate (Ca2P2O7) polymorphs
Griesiute, Diana; Garskaite, Edita; Antuzevics, Andris; Klimavicius, Vytautas; Balevicius, Vytautas; Zarkov, Aleksej; Katelnikovas, Arturas; Sandberg, Dick; Kareiva, Aivaras (Nature Research, 2022)In the present work, three different Mn2+-doped calcium pyrophosphate (CPP, Ca2P2O7) polymorphs were synthesized by wet co-precipitation method followed by annealing at different temperatures. The crystal structure and ...