Autor: Adamczyk, M. D. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Influence of Lanthanum Dopant on the Structure and Electric Properties of BaBi2Nb2O9 Ceramics
Autorzy:: Adamczyk-Habrajska, M.
Goryczka, T.
Szalbot, D.
Dzik, J.
Rerak, M.
Bochenek, D.
Powiązania:: https://bibliotekanauki.pl/articles/353535.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: ferroelectric relaxor
ceramics
impedance spectroscopy
Opis:: The paper reports the consequences of lanthanum modifications of barium bismuth niobiate (BaBi₂ Nb₂ O₉) ceramics. The discussed materials were prepared by solid state synthesis and a one-step sintering process. The investigations are focused on dielectric aspects of the modification. The presented results reveal that the trivalent lanthanum ions incorporate twovalent barium ions, which is connected with the creation of A-site cationic vacancies as well as oxygen vacancies. Such a scenario results in significant decreasing in grain boundaries resistivity. The activation energy of grain boundaries conductivity is significantly reduced in the case of lanthanum admixture.
Źródło:: Archives of Metallurgy and Materials; 2020, 65, 1; 207-214
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: The Effect of Ho Doping Contents on the Structural, Microstructure and Dielectric Properties of Bi5Ti3FeO15 Aurivillius Ceramics
Autorzy:: Tomaszewska, M.
Dzik, J.
Wodecka-Duś, B.
Pikula, T.
Adamczyk-Habrajska, M.
Szalbot, D.
Chocyk, D.
Powiązania:: https://bibliotekanauki.pl/articles/2049646.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: ceramics
Bi5Ti3FeO15
Ho3+ doping
microstructure
structure
dielectric properties
Opis:: Aurivillius Bi5-xHoxTi3FeO15 (BHTFO) multiferroic ceramics with different holmium doping contents were synthesized by conventional solid state reaction. The effect of holmium doping on the microstructure, structural and dielectric behaviors of BHTFO ceramics were investigated in details. Microstructure and crystalline structure studies of ceramics were carried out at room temperature while dielectric properties were investigated in a wide range of temperature (T = 25ºC-550ºC) and frequency (20Hz-1MHz).
Źródło:: Archives of Metallurgy and Materials; 2021, 66, 1; 91-96
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Study of phase transition in Bi3TiNbO9-BaBi2Nb2O9 ceramics
Autorzy:: Adamczyk, M.
Kusz, J.
Hofmeister, W.
Zubko, M.
Kozielski, L.
Pilch, M.
Bochenek, D.
Wodecka-Duś, B.
Powiązania:: https://bibliotekanauki.pl/articles/353210.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: dielectric properties
X-ray methods
grain size
phase transition
ceramics
Opis:: The subject of the paper is lead free bismuth layer structure oxides (1-x)Bi₃TiNbO₉-xBaBi₂N₂O₉(x=0; 1; 2; 3 mol). The influence of Bi₃TiNbO₉/BaBi₂Nb₂O₉ ratio on dielectric and structural properties was studied in a wide range of temperatures. Change in the ratio causes a decrease in the maximum value of dielectric permittivity and shifts the temperature of ε`_max to low values, leading to linear decreasing of average grain size and linear increasing of ceramics density. These results indicate an augment of the packing degree and the participation of pores are significantly decreased with the increase of BaBi₂Nb₂O₉compound intake. Moreover, for 0.7Bi₃TiNbO₉-0.3BaBi₂Nb₂O₉ ceramics the dielectric phase transition is broadened and the properties characteristic for the ferroelectric relaxor appear.
Źródło:: Archives of Metallurgy and Materials; 2016, 61, 3; 1503-1510
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja