Physical Properties of the K<sub>0.5</sub>Na<sub>0.5</sub>NbO<sub>3</sub> Compound Doped With Li, La, and Ti in Concentration Lower Than 1.3 mol%
ABSTRACT Physical properties of the K 0.5 Na 0.5 NbO 3 (KNN) system doped with less than 1.3 mol% of Li + , La 3+ , and Ti 4+ ions were studied. These samples were prepared by a mixture of oxides and carbonates using high‐energy milling and solid‐state reactions. The sample KNNLa0.75 showed an orthorhombic phase, and the rest showed a mixture of monoclinic and orthorhombic phases. Ion doping induced an increase in the grain size, and improved the ferroelectric and pyroelectric properties, decreasing leakage currents. The thermal diffusivity decreases with doping and differential scanning calorimetry measurements allowed the identification of crystalline transition temperatures from orthorhombic‒tetragonal, monoclinic‒tetragonal, and tetragonal‒cubic phases.
Authors
- C. Montero‐Tavera (ORCID: https://orcid.org/0000-0002-8906-366X)
- J. M. Yáñez‐Limón (ORCID: https://orcid.org/0000-0001-6457-4044)
- Jocelyne Estrella-Nuñez (ORCID: https://orcid.org/0000-0003-2768-6615)
- M. D. Durruthy‐Rodríguez (ORCID: https://orcid.org/0000-0003-1962-9231)
- Karla Mariela Moya-Canul
- D. Olguı́n (ORCID: https://orcid.org/0000-0001-8343-2359)
Institutions
- Universidad de Guanajuato (MX)
- Instituto Tecnológico de Santo Domingo (DO)
- Instituto Politécnico Nacional (MX)
- Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (MX)
Publication Details
- Journal
- International Journal of Ceramic Engineering & Science
- Published
- 2025-07-01
- DOI
- https://doi.org/10.1002/ces2.70012
- Primary Topic
- Ferroelectric and Piezoelectric Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.00