Zobrazeno 1 - 10
of 172
pro vyhledávání: '"Z. Ujma"'
Publikováno v:
Ceramics International. 41:11482-11488
The effect of the antimony dopant on the crystallographic structure, phase transition, dielectric response, and relaxor behaviour of (Pb0.80Ba0.20)(Zr0.70Ti0.30)O3 ceramics have been studied. Ceramic samples, with Sb concentrations varying from 0.5 t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03cc2d733e4e14650783580e55c889f0
https://doi.org/10.1016/j.ceramint.2015.05.113
https://doi.org/10.1016/j.ceramint.2015.05.113
Autor:
A. Leonarska, D. M. Nalecz, Renata Bujakiewicz-Korońska, I. Gruszka, Anna Z. Szeremeta, Z. Ujma, Andrzej Molak
Publikováno v:
Journal of the European Ceramic Society
We sintered the new (1 − x )Pb(Zr 0.70 Ti 0.30 )O 3 – x BiMnO 3 ( x = 0, 0.055, and 0.11) ceramics. The XRD test has shown the rhombohedral R3m symmetry for the PZT sample. The (1 − x )PZT– x BiMnO 3 samples show the existence of two phases,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82c6cd3df62679413b02961b75ec5896
Autor:
A. Niewiadomski, M. Pawlik, J. Suchanicz, Antoni Kania, Irena Jankowska-Sumara, Z. Ujma, Seweryn Miga, Janusz Koperski
Publikováno v:
Journal of the European Ceramic Society. 34:1761-1770
Silver niobate AgNbO3 is a promising basic compound for high permittivity microwave dielectrics and lead-free piezoelectrics. Stoichiometric and nonstoichiometric AgxNbO2.5+x/2 ceramics were obtained for x equal to 0.95, 0.98, 1.00, 1.02, and 1.05. S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::677cb0dd3a99ba94ed9910f95e0a8ecc
https://doi.org/10.1016/j.jeurceramsoc.2014.01.016
https://doi.org/10.1016/j.jeurceramsoc.2014.01.016
Publikováno v:
Ferroelectrics. 466:42-50
PbTiO3 powder has been obtained by the hydrothermal method. The studied ceramics has been sintered from powder. SEM analysis exhibited stoichiometric composition. XRD analysis of the reference crystal, the hydrothermal powder as well as the ceramics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b1c800eb338bda742dc1893f27867ae
https://doi.org/10.1080/00150193.2014.894861
https://doi.org/10.1080/00150193.2014.894861
Publikováno v:
Ferroelectrics. 464:59-71
In our study BiMnO3 ceramics has been sintered. The X-ray diffraction test has shown that the crystal lattice symmetry is monoclinic and centrosymmetric. Grain structure and stoichiometry has been determined by scanning electron microscopy whereas lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92e0e4b099dc687dbd418a905a92cf52
https://doi.org/10.1080/00150193.2014.892815
https://doi.org/10.1080/00150193.2014.892815
Autor:
Dariusz Kajewski, Z. Ujma
Publikováno v:
Ceramics International. 39:8213-8218
Aurivillius SrBi 2 Ta 2 O 9 (SBT) ceramics were prepared by applying the conventional solid state reaction method. The grain structure and stoichiometry were investigated with the use of a scanning electron microscope with an energy dispersion X-ray
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0373afd0bd2954c78f62ffdd1c3110a
https://doi.org/10.1016/j.ceramint.2013.04.005
https://doi.org/10.1016/j.ceramint.2013.04.005
Publikováno v:
Physical Review B. 93
The influence of a small amount of niobium ions (0.6 mol% $\mathrm{N}{\mathrm{b}}_{2}{\mathrm{O}}_{5}$) introduced into $\mathrm{PbZr}{\mathrm{O}}_{3}$ single crystals on the structural, dielectric, optical, and electromechanical properties was studi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6101045f669a60f2b31b01382ceae5f
https://doi.org/10.1103/physrevb.93.054104
https://doi.org/10.1103/physrevb.93.054104
Autor:
Dariusz Kajewski, Z. Ujma
Publikováno v:
Journal of Alloys and Compounds. 509:7532-7536
Aurivillius SrBi 2 (Nb 0.5 Ta 0.5 ) 2 O 9 (SBNT 50/50) ceramics were prepared using the conventional solid-state reaction method. The obtained samples were thermally modified in high vacuum to study the influence of the formed defects on the dielectr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69d4f0c640042fc2d6a98b9efe0829cb
https://doi.org/10.1016/j.jallcom.2011.04.121
https://doi.org/10.1016/j.jallcom.2011.04.121
Autor:
Z. Ujma, Dariusz Kajewski
Publikováno v:
Phase Transitions. 83:897-908
Aurivillius SrBi2Nb2O9 (SBN) ceramics were prepared using the conventional solid state reaction method. Scanning electron microscopy was applied to investigate the grain structure. The X-ray diffraction studies revealed an orthorhombic structure in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::695e799572b0d1ef1096fbf11f0d9101
https://doi.org/10.1080/01411594.2010.509590
https://doi.org/10.1080/01411594.2010.509590
Autor:
D. Kajewski, Z. Ujma
Publikováno v:
Journal of Physics and Chemistry of Solids. 71:24-29
Aurivillius SrBi 2 (Nb 0.5 Ta 0.5 ) 2 O 9 (SBNT 50/50) ceramics were prepared using the conventional solid-state reaction method. Scanning electron microscopy was applied to investigate the grain structure. The XRD studies revealed an orthorhombic st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e403786f4d755d28032549d6e0dea975
https://doi.org/10.1016/j.jpcs.2009.10.001
https://doi.org/10.1016/j.jpcs.2009.10.001