⁷Li NMR short-range ordering in hardened lithium sodium niobate.

ABSTRACT: Thermal treatments play a crucial role in tuning the functional properties of lithium-based perovskites, which are of interest for applications in energy storage, actuation and sensing. In the present work, the impact of aging and quenching on the local structure and lithium mobility in lithium sodium niobate (LNN) ceramics was investigated using Density Functional Theory (DFT), transmission electron microscopy (TEM) and solid-state Nuclear Magnetic Resonance (NMR) techniques. Our results demonstrate that quenching inhibits the formation of a lithium-rich phase, leading to significant modifications in dipolar and quadrupolar interactions. Aging induces the formation of LiNbO₃ within the perovskite matrix, with no indication of lithium mobility at the boundaries of LiNbO₃

SUBMITTER: Logrado M 

PROVIDER: S-EPMC12511322 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature