Stress Induced Charge-Ordering Process in LiMn2O4

2016/02/15 by Yan Chen, Chen, Yan, Dunji Yu +3
Engineering · Materials Science · Physics and Astronomy · #Advancements in Battery Materials #FOS: Physical sciences #Ferroelectric and Piezoelectric Materials #Materials Science (cond-mat.mtrl-sci) #Multiferroics and related materials #cond-mat.mtrl-sci

paper · pdf · doi:10.48550/arxiv.1602.04725

arxiv created 2016/02/15 · openalex publication_date 2016/02/15 · arxiv updated 2016/02/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In this letter we report the stress induced Mn charge-ordering process in the LiMn2O4 spinel, evidenced by the lattice strain evolutions due to the Jahn-Teller effects. In-situ neutron diffraction, reveals that the initial stage of this process at low stress, indicating the eg electron localization at the preferential Mn sites during the early phase transition, as an underlying charge ordering mechanism in the charge-frustrated LiMn2O4. The initial stage of this transition exhibits as a progressive lattice and charge evolution, without showing a first-order behavior.

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