Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Miroslava Hajdúchová"'
Autor:
Miroslava Hajdúchová, Lukáš Kalina, Miroslav Hnatko, Ivo Kuřitka, Raghvendra Singh Yadav, Jaromir Havlica, Vojtěch Enev, Cigáň Alexander, J. Rusnák, Jiri Masilko
Publikováno v:
Journal of Magnetism and Magnetic Materials. 447:48-57
In this article, Co 1−x Zn x Fe 2 O 4 (x = 0.0 and 0.5) disc-shaped pellets were formed by hot-press sintering of nanoparticles at temperature 925 °C for 10 min in vacuum atmosphere under 30 MPa mechanical pressure. X-ray diffraction study confirm
Autor:
Jiri Masilko, Vojtěch Enev, Jakub Tkacz, Miroslava Hajdúchová, Lukáš Kalina, Jarmila Vilčáková, Ivo Kuřitka, Jaromir Havlica, Raghvendra Singh Yadav
Publikováno v:
Journal of Physics and Chemistry of Solids. 107:150-161
In this study, NiFe2O4 nanoparticles were synthesized using a honey-mediated sol-gel combustion method. The synthesized nanoparticles and samples annealed at 800 °C and 1100 °C were characterized by X-ray diffraction (XRD), field emission-scanning
Autor:
Jiri Masilko, Ivo Kuřitka, Raghvendra Singh Yadav, Vojtěch Enev, Jaromir Havlica, Jakub Tkacz, Lukáš Kalina, Miroslava Hajdúchová, Jarmila Vilčáková
Publikováno v:
Journal of Materials Science: Materials in Electronics. 28:6245-6261
In this work, CuFe2O4 nanoparticles were synthesized by natural source of glucose and fructose (i.e., honey)—mediated sol–gel auto-combustion method. Grain size, cation distribution and crystal phase were further tuned through annealing at higher
Autor:
Radoslav Novotný, Miroslava Hajdúchová, Martin Palou, Jakub Tkacz, Martin Boháč, Theodor Staněk
Publikováno v:
Materials Science Forum. 851:51-56
The role of temperature of metakaolin/Portland cement binary system was studied by isothermal calorimetry. Sample with 50 % of metakaolin replacement were monitored at 30 °C, 40 °C, 50 °C and 60 °C. Structural and chemical characterization of har
Publikováno v:
Materials Science Forum. 851:57-62
The study deals with the preparation process and properties of alkali-activated blast furnace slag with different addition of lignosulphonate plasticizer. The goal of this study is to evaluate the suitability of plasticizer and find the convenient do
Autor:
Lukáš Kalina, Vojtěch Enev, Jaromir Havlica, Ivo Kuřitka, Jiri Masilko, Raghvendra Singh Yadav, Zuzana Kožáková, Miroslava Hajdúchová, Jaromír Wasserbauer
Publikováno v:
Journal of Magnetism and Magnetic Materials. 399:109-117
Nd 3+ doped cobalt ferrite nanoparticles have been synthesized by starch-assisted sol–gel auto-combustion method. The significant role played by Nd 3+ added to cobalt ferrite in changing cation distribution and further in influencing structural and
Autor:
Raghvendra Singh Yadav, Jiri Masilko, Vojtěch Enev, Ivo Kuřitka, Miroslava Hajdúchová, Jaromír Wasserbauer, Lukáš Kalina, Zuzana Kožáková, Jaromir Havlica
Publikováno v:
Journal of Superconductivity and Novel Magnetism. 29:759-769
Impact of crystal phase evolution on structural and magnetic properties of copper ferrite nanoparticles is studied and reported. The copper ferrite nanoparticles were synthesized by starch-assisted sol-gel auto-combustion method and further annealed
Autor:
Lukáš Kalina, Zuzana Kožáková, Vojtěch Enev, Ivo Kuřitka, Jaromir Havlica, Jiri Masilko, Miroslava Hajdúchová, Jaromír Wasserbauer, Raghvendra Singh Yadav
Publikováno v:
Journal of Magnetism and Magnetic Materials. 394:439-447
Evolution of the structural and magnetic properties of NiFe2O4 nanoparticles synthesized by starch-assisted sol–gel auto-combustion method, and exposed to further annealing at 200 °C, 400 °C, 600 °C, 800 °C and 1000 °C, was evaluated in detail
Autor:
Františka Frajkorová, Pavol Šajgalík, Martin Boháč, Martin Zmrzlý, Martin Palou, Raghvendra Singh Yadav, Jaromir Havlica, Lukáš Kalina, Miroslav Hnatko, Miroslava Hajdúchová, Jiri Masilko, Eva Bartoníčková, Vojtěch Enev, Cigáň Alexander
Publikováno v:
Journal of Magnetism and Magnetic Materials. 378:190-199
In this article, Co 1− x Zn x Fe 2 O 4 ( x =0.0 and 0.5) spinel ferrite nanoparticles were achieved at 800 °C by starch-assisted sol–gel autocombustion method. To further reduce the particle size, these synthesized ferrite nanoparticles were bal
Autor:
Zuzana Kozakova, Martin Palou, Jiri Masilko, Vojtěch Enev, Raghvendra Singh Yadav, Martin Boháč, Ivo Kuřitka, Eva Bartoníčková, Františka Frajkorová, Lukáš Kalina, Miroslava Hajdúchová, Jaromír Wasserbauer, Jaromir Havlica
Publikováno v:
Journal of Superconductivity and Novel Magnetism. 28:2097-2107
Dysprosium-substituted cobalt ferrite nanoparticles with composition of CoFe2−x Dy x O4 (x = 0 − 0.1 in a step of 0.025) were synthesized by starch-assisted sol–gel auto-combustion method. The effect of Dy3+ cation substitution on structural an