Rare-earth element ions Pr3+ and Nd3+-doped (K0.44Na0.52Li0.04)(Nb0.86Ta0.1Sb0.04)O3 (KNLNTS-xRE) ceramics were prepared by traditional solid-state sintering method. The phase structure, microstructure, electrical and photoluminescence properties of the samples were investigated. Results showed that both Pr3+ and Nd3+ modified ceramics can form the polymorphic phase transition at room temperature at x = 0.3 wt% with the optimal properties (P r = 26.1 μC/cm2, E C = 15.2 kV/cm, d 33 = 196 pC/N, d 33* = 390 pm/V for KNLNTS-0.3Pr, and P r = 25 μC/cm2, E C = 13.8 kV/cm d 33 = 228 pC/N, d 33* = 350 pm/V for KNLNTS-0.3Nd). In addition, a large strain of 0.12 and 0.10% at a driving field of 30 kV/cm for KNLNTS-0.3Pr and KNLNTS-0.3Nd were obtained, respectively. Besides the excellent strain properties, the KNLNTS-0.3RE samples exhibited a strong photoluminescence: a green emission (528 nm), an orange emission (602 nm), and a red emission (650 nm) for KNLNTS-0.3Pr; a strong near-infrared emission (909 and 1058 nm) for KNLNTS-0.3Nd. These results suggest that the KNLNTS-0.3RE system should be a promising lead-free material with multifunctional properties and significant technological potential in novel multifunctional devices.
Journal of Materials Science: Materials in Electronics – Springer Journals
Published: Dec 20, 2017
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