Technology and Dielectric Properties of the KNLN Doped with Nd3+ and Pr3+ Ions

• Autorzy: Bochenek D. , Osińska K. , Mankiewicz M. , Niemiec P. , Dercz G.

Identyfikatory

DOI

10.24425/amm.2020.133237

• Języki publikacji: EN

Abstrakty

EN

The paper presents the technology and basic properties of three compositions of lead-free ceramics: (i) (K_0.44Na_0.52Li_0.04)NbO₃, (ii) (K_0.44Na_0.52Li_0.04)NbO₃)NbO₃ +0.5%mol Nd₂O₃ and (iii) (K_0.44Na_0.52Li_0.04)NbO₃)NbO₂+0.5%mol Pr₂O₃. Powders of the designed compositions based on KNLN were obtained with the classic ceramic technology, as a result of solid phase synthesis, from a mixture of simple oxides and carbonates. The synthesis of ceramic powders was carried out at T_s = 900°C for t_s = 4 h, while compaction by free sintering at T_sint = 1100°C for t_sint = 2 h. XRD studies have shown that doping with praseodymium and neodymium promotes the formation of the tetragonal phase in the base composition (K_0.44Na_0.52Li_0.04)NbO₃)NbO₃ at lower temperatures. On the other hand, microstructural tests have shown that the admixture of neodymium and praseodymium improves the sinterability of ceramic samples during the technological process; however, the ceramic samples still exhibit high porosity.

Słowa kluczowe

EN

lead free ceramics; sodium potassium niobate; ferroelectrics; doped

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2020
• Tom: Vol. 65, iss. 3
• Strony: 1183--1188
• Opis fizyczny: Bibliogr. 20 poz., fot., rys., tab., wzory

Twórcy

autor

Bochenek D.

• University of Silesia in Katowice, Faculty of Science and Technology, Institute of Materials Engineering 1a, 75 Pułku Piechoty Str., 41-500 Chorzów, Poland

autor

Osińska K.

• University of Silesia in Katowice, Faculty of Science and Technology, Institute of Materials Engineering 1a, 75 Pułku Piechoty Str., 41-500 Chorzów, Poland

autor

Mankiewicz M.

• University of Silesia in Katowice, Faculty of Science and Technology, Institute of Materials Engineering 1a, 75 Pułku Piechoty Str., 41-500 Chorzów, Poland

autor

Niemiec P.

• University of Silesia in Katowice, Faculty of Science and Technology, Institute of Materials Engineering 1a, 75 Pułku Piechoty Str., 41-500 Chorzów, Poland

autor

Dercz G.

• University of Silesia in Katowice, Faculty of Science and Technology, Institute of Materials Engineering 1a, 75 Pułku Piechoty Str., 41-500 Chorzów, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).