Szczegóły publikacji
Opis bibliograficzny
Structural and spectroscopic properties of Yb/Nd doped $K_{0.5}Na_{0.5}NbO_{3}$ lead-free ferroelectric ceramics / Marta LUBSZCZYK, Waldemar Tejchman, Dariusz Bochenek, Dominika MADEJ, Maciej SITARZ, Tomasz BRYLEWSKI, Andrzej KRUK // Journal of Alloys and Compounds ; ISSN 0925-8388. — 2025 — vol. 1021 art. no. 179526, s. 1-18. — Bibliogr. s. 16-18, Abstr. — Publikacja dostępna online od: 2025-03-03. — M. Lubszczyk, A.Kruk - dod. afiliacja: University of the National Education Commission, Kraków
Autorzy (7)
- AGHLubszczyk Marta
- Tejchman Waldemar
- Bochenek Dariusz
- AGHMadej Dominika
- AGHSitarz Maciej
- AGHBrylewski Tomasz
- AGHKruk Andrzej
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 158772 |
|---|---|
| Data dodania do BaDAP | 2025-04-11 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.jallcom.2025.179526 |
| Rok publikacji | 2025 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Journal of Alloys and Compounds |
Abstract
Neodymium and ytterbium–co-doped potassium sodium niobate (KNN) meso-sized particles, were prepared using the optimized Pechini process. The prepared gels underwent thorough characterization using differential scanning calorimetry with thermogravimetry coupled with evolve gas analysis, whereas the obtained powders were studied by means of X-ray diffraction, scanning electron microscopy. The calcination and sintering temperatures were chosen based on DSC/TG analysis and dilatometry studies, respectively. XRD patterns confirmed only orthorhombic KNN phase formation (Amm2). Incorporating Nd3 + and Yb3+ ions led to changes in lattice parameters and crystallite size (82.66–129.99 nm) of both powders and sinters. Sinters indicated dielectric behavior, with activation energy ranging between 2.89 and 3.02 eV. Three luminescence bands in the range of 800–1100 nm were observed in photoluminescence spectra, after excitation from 700 to 840 nm. Moreover, strong green light up-conversion emission was observed and described. Dielectric and piezoelectric properties investigated by electrochemical impedance spectroscopy showed that introducing Yb3+ and Nd3+ cations into potassium sodium niobate significantly influenced its parameters.
