Multifunctional Materials Based on the Solid Solutions of the (Na, K, Cd0.5)NbO3 (KNN-Cd) System Modified with Rare Earth Elements: Crystal Structure, Microstructure, and Macroresponses

Author:

Konstantin Andryushin1ORCID,Palatnikov Mikhail2ORCID,Shilkina Lidiya1,Nagaenko Alexandr3,Shcherbina Olga2,Smirnov Maxim2,Sidorov Nikolay2,Kubrin Stanislav1,Rudskaya Anzhela4,Rudskiy Daniil1,Reznichenko Larisa1

Affiliation:

1. Research Institute of Physics, Southern Federal University, Rostov-on-Don 344002, Russia

2. Tananaev Institute of Chemistry—Subdivision of the Federal Research Centre, Kola Science Centre of the Russian Academy of Sciences, Apatity 184209, Russia

3. Institute of High Technology and Piezo Technic, Southern Federal University, Rostov-on-Don 344002, Russia

4. Faculty of Physics, Southern Federal University, Rostov-on-Don 344002, Russia

Abstract

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.

Funder

Ministry of Science and Higher Education of the Russian Federation

Publisher

MDPI AG

Subject

Materials Science (miscellaneous),Ceramics and Composites

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