Browsing Cietvielu fizikas institūts / Institute of Solid State Physics by Author "Sarakovskis, Anatolijs"

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    • Amorphous Calcium Phosphate and Amorphous Calcium Phosphate Carboxylate: Synthesis and Characterization 

      Indurkar, Abhishek; Choudhary, Rajan; Rubenis, Kristaps; Nimbalkar, Mansingraj; Sarakovskis, Anatolijs; Boccaccini, Aldo R.; Locs, Janis (American Chemical Society, 2023)
      Amorphous calcium phosphate (ACP) is the first solid phase precipitated from a supersaturated calcium phosphate solution. Naturally, ACP is formed during the initial stages of biomineralization and stabilized by an organic ...

    • Application of Calcium Aluminate Doped with Mn and Cr in Optical Thermometry 

      Rogulis, Uldis; Fedotovs, Andris; Rodionovs, Pavels; Kemere, Meldra; Antuzevics, Andris; Sarakovskis, Anatolijs; Alps, K.; Kiseleva, V. (Sciendo, 2023)
      Optical thermometers are advantageous for temperature measurement in electromagnetic fields and aggressive environments; however, their composition mostly relies on materials doped with expensive and resource-limited rare ...

    • Bi2Se3 Nanostructured Thin Films as Perspective Anodes for Aqueous Rechargeable Lithium-Ion Batteries 

      Lazarenko, Vitalijs; Rublova, Yelyzaveta; Meija, Raimonds; Andzane, Jana; Voikiva, Vanda; Kons, Artis; Sarakovskis, Anatolijs; Viksna, Arturs; Erts, Donats (MDPI, 2022)
      In recent years, aqueous rechargeable lithium-ion batteries (ARLIBs) have attracted attention as an alternative technology for electrical storage. One of the perspective battery anode materials for application in ARLIBs ...

    • Cubic and rhombohedral Ba4Lu3F17:Er3+ in transparent glass ceramics: Crystallization and upconversion luminescence 

      Krieke, Guna; Sarakovskis, Anatolijs; Springis, Maris (Elsevier B.V., 2018)
      Novel Er3+ doped glass ceramics containing Ba4Lu3F17 nanocrystals were successfully prepared by heat treatment of melt-quenched glasses. Highly efficient upconversion luminescence was detected under near-infrared excitation ...

    • Effect of Core–Shell Rubber Nanoparticles on the Mechanical Properties of Epoxy and Epoxy-Based CFRP 

      Glaskova-Kuzmina, Tatjana; Stankevics, Leons; Tarasovs, Sergejs; Sevcenko, Jevgenijs; Špaček, Vladimir; Sarakovskis, Anatolijs; Zolotarjovs, Alekejs; Shmits, Krisjanis; Aniskevich, Andrey (MDPI, 2022)
      The aim of the research was to estimate the effect of core–shell rubber (CSR) nanoparticles on the tensile properties, fracture toughness, and glass transition temperature of the epoxy and epoxy-based carbon fiber reinforced ...

    • Effect of Post-Printing Cooling Conditions on the Properties of ULTEM Printed Parts 

      Glaskova-Kuzmina, Tatjana; Dejus, Didzis; Jatnieks, Janis; Aniskevich, Andrey; Sevcenko, Jevgenijs; Sarakovskis, Anatolijs; Zolotarjovs, Aleksejs (MDPI, 2023)
      first_pageDownload PDFsettingsOrder Article Reprints Open AccessArticle Effect of Post-Printing Cooling Conditions on the Properties of ULTEM Printed Parts by Tatjana Glaskova-Kuzmina 1,2,*ORCID,Didzis Dejus 1,Jānis ...

    • Enhanced Electrochemical Properties of Na0.67MnO2 Cathode for Na-Ion Batteries Prepared with Novel Tetrabutylammonium Alginate Binder 

      Kucinskis, Gints; Kruze, Beate; Korde, Prasad; Sarakovskis, Anatolijs; Viksna, Arturs; Hodakovska, Julija; Bajars, Gunars (MDPI, 2022)
      Both the binder and solid-electrolyte interface play an important role in improving the cycling stability of electrodes for Na-ion batteries. In this study, a novel tetrabutylammonium (TBA) alginate binder is used to prepare ...

    • Enhanced optical properties of yttrium aluminum garnet with the yttrium vanadate impurity phase 

      Skruodiene, Monika; Juodvalkyte, Ruta; Kemere, Meldra; Ramanauskas, Rimantas; Sarakovskis, Anatolijs; Skaudzius, Ramunas (Elsevier, 2022)
      Yttrium aluminum garnet doped with europium with an additional impurity phase of yttrium vanadate doped europium has been prepared in different ways: synthesized by a sol-gel route and mechanically mixed in a mortar. The ...

    • Flame-Retardant and Tensile Properties of Polyamide 12 Processed by Selective Laser Sintering 

      Glaskova-Kuzmina, Tatjana; Dejus, Didzis; Jātnieks, Jānis; Kruuv, Partel-Peeter; Lancere, Linda; Kobenko, Stepans; Sarakovskis, Anatolijs; Zolotarjovs, Aleksejs (MDPI, 2022)
      Composite materials are becoming widely applied in fire-critical conditions such as, e.g., aviation interior parts. Environmental considerations motivate the use of additive manufacturing due to the decrease of polymer ...

    • High-order harmonics generation in Cd and Pd laser-induced plasmas 

      Ganeev, Rashid A.; Kim, Vyacheslav V.; Butikova, Jelena; Atvars, Aigars; Grube, Jurgis; Sarakovskis, Anatolijs; Ubelis, Arnolds (Optica Publishing Group, 2023)
      We demonstrate the generation of high-order harmonics of laser pulses in palladium and cadmium plasmas. We adjusted the wavelength of driving pulses to investigate the resonance enhancement in different ranges of extreme ...

    • Hydrothermal Synthesis and Properties of Yb3+/Tm3+ Doped Sr2LaF7 Upconversion Nanoparticles 

      Milićević, Bojana; Periša, Jovana; Ristić, Zoran; Milenković, Katarina; Antić, Željka; Smits, Krisjanis; Kemere, Meldra; Vitols, Kaspars; Sarakovskis, Anatolijs; Dramićanin, Miroslav D. (MDPI, 2023)
      We report the procedure for hydrothermal synthesis of ultrasmall Yb3+/Tm3+ co-doped Sr2LaF7 (SLF) upconversion phosphors. These phosphors were synthesized by varying the concentrations of Yb3+ (x = 10, 15, 20, and 25 mol%) ...

    • The Impact of Graphene in Na2FeP2O7/C/Reduced Graphene Oxide Composite Cathode for Sodium-Ion Batteries 

      Nesterova, Inara; Britala, Liga; Sarakovskis, Anatolijs; Kruze, Beate; Bajars, Gunars; Kucinskis, Gints (MDPI, 2023)
      This study presents a thorough investigation of Na2FeP2O7 (NFP) cathode material for sodium-ion batteries and its composites with carbon and reduced graphene oxide (rGO). Our findings demonstrate that rGO sheets improve ...

    • Investigation of Nonlinear Optical Processes in Mercury Sulfide Quantum Dots 

      Kim, Vyacheslav V.; Shuklov, Ivan A.; Mardini, Alaa A.; Bundulis, Arturs; Zvyagin, Andrey I.; Kholany, Rawda; Lizunova, Anna A.; Grube, Jurgis; Sarakovskis, Anatolijs; Ovchinnikov, Oleg V.; Ganeev, Rashid A. (MDPI, 2022)
      The authors report the third-harmonic generation, nonlinear refraction, and nonlinear absorption in HgS quantum dot (QD) suspensions and films using the nanosecond and femtosecond pulses. High conversion efficiency (7 × ...

    • Low-temperature studies of Cr3+ ions in natural and neutron-irradiated Mg-Al spinel 

      Mironova-Ulmane, Nina; Popov, Anatoli I.; Krieke, Guna; Antuzevics, Andris; Skvortsova, V.; Elsts, Edgars; Sarakovskis, Anatolijs (American Institute of Physics, 2020)
      Original results on the EPR and photoluminescence Cr3+ ions in natural magnesium aluminum spinel (MgAl2O4) are presented. The photoluminescence spectra of Cr3+ ions in natural MgAl2O4 have been measured before and after ...

    • Luminescence of AlN:Mn2+ materials: Properties and mechanisms 

      Ruska, Rihards; Berzina, Baiba; Cipa, Janis; Trinkler, Laima; Sarakovskis, Anatolijs; Grabis, J.; Steins, I. (Elsevier, 2023)
      Luminescence processes resulting in 600 nm emission of Mn2+ ions in AlN:Mn ceramics were studied based on investigations of photoluminescence and its excitation spectra, luminescence kinetics and long-lasting luminescence ...

    • Membrane-less amphoteric decoupled water electrolysis using WO3 and Ni(OH)2 auxiliary electrodes 

      Vanags, Martins; Kulikovskis, Guntis; Kostjukovs, Juris; Jekabsons, Laimonis; Sarakovskis, Anatolijs; Smits, Krisjanis; Bikse, Liga; Sutka, Andris (Royal Society of Chemistry, 2022)
      Energy storage and delivery play a crucial role in the effective management of renewable power sources such as solar and wind. Hydrogen energy is proposed to be one of the major substitutes to fill the gap between the ...

    • Ordering of fluorite-type phases in erbium-doped oxyfluoride glass ceramics 

      Krieke, Guna; Sarakovskis, Anatolijs; Springis, Maris (Elsevier B.V., 2018)
      In this study, novel transparent Er3+ doped glass ceramics were prepared from melt-quenched oxyfluoride glasses with general composition of Na2O-NaF-BaF2-YbF3-Al2O3-SiO2. The crystallization of fluorite (BaF2, BaF2-YbF3, ...

    • Oxidation State and Local Structure of Chromium Ions in LaOCl 

      Antuzevics, Andris; Krieke, Guna; Ozols, Haralds; Fedotovs, Andris; Sarakovskis, Anatolijs; Kuzmin, Alexei (MDPI, 2021)
      LaOCl doped with 0–10 mol% Cr was synthesized by thermal decomposition of chlorides. X-ray diffraction (XRD) analysis revealed that incorporation of chromium results in a decrease of the lattice parameter a and a simultaneous ...

    • Phase transitions and upconversion luminescence in oxyfluoride glass ceramics containing Ba4Gd3F17 nanocrystals 

      Krieke, Guna; Sarakovskis, Anatolijs; Ignatans, Reinis; Gabrusenoks, Jevgenijs (Elsevier B.V., 2017)
      Novel transparent Er3+ doped oxyfluoride glass-ceramics containing Ba4Gd3F17 nanocrystals were prepared by melt quenching followed by heat treatment of as-prepared glasses. The phase composition and microstructure were ...

    • Plasma Dynamics Characterization for Improvement of Resonantly Enhanced Harmonics Generation in Indium and Tin Laser-Produced Plasmas 

      Kim, Vyacheslav V.; Butikova, Jelena; Grube, Jurgis; Sarakovskis, Anatolijs; Ganeev, Rashid A. (MDPI, 2022)
      In this study, we characterize the properties of indium and tin laser-induced plasmas responsible for efficient high-order harmonics generation of the ultrashort pulses propagating through these media. The optimally formed ...