Ceramics (Feb 2023)

Multifunctional Materials Based on the Solid Solutions of the (Na, K, Cd<sub>0.5</sub>)NbO<sub>3</sub> (KNN-Cd) System Modified with Rare Earth Elements: Crystal Structure, Microstructure, and Macroresponses

  • Andryushin Konstantin,
  • Mikhail Palatnikov,
  • Lidiya Shilkina,
  • Alexandr Nagaenko,
  • Olga Shcherbina,
  • Maxim Smirnov,
  • Nikolay Sidorov,
  • Stanislav Kubrin,
  • Anzhela Rudskaya,
  • Daniil Rudskiy,
  • Larisa Reznichenko

DOI
https://doi.org/10.3390/ceramics6010021
Journal volume & issue
Vol. 6, no. 1
pp. 342 – 363

Abstract

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Ceramic samples of polycomponent solid solutions (SSs) Na0.90K0.05Cd0.05NbO3 (Cd-modified KNN) and [(Na0.90K0.05Cd0.05)0.95REE0.05]NbO3, where REE = La, Pr, Tb, Dy, Ho, were obtained by the uniaxial hot pressing (UHP) method. The crystal lattice structures, morphological features of the microstructure, and dielectric and thermophysical properties of these ceramics have been investigated. For the first time, their strength characteristics (Young’s modulus) and the critical stress intensity factor of the mode I Kic have been estimated. Photoluminescent properties have been compared in SSs [(Na0.90K0.05Cd0.05)0.95REE0.05]NbO3 in the visible wavelength range.

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