LiFePO4 (LFPO) is an archetypical and well-known cathode material for rechargeable Li-ion batteries. However, its quasi-one-dimensional (Q1D) structure along with the Fe ions, LFPO also displays interesting low-temperature magnetic properties. Our team has previously utilized the muon spin rotation (μ+SR) technique to investigate both magnetic spin order as well as Li-ion diffusion in LFPO. In this initial study we extend our investigation and make use of high-pressure μ+SR to investigate effects on the low-T magnetic order. Contrary to theoretical predictions we find that the magnetic ordering temperature as well as the ordered magnetic moment increase at high pressure (compressive strain).
@article{arxiv.2212.08439,
title = {Magnetic Properties of Multifunctional $^7$LiFePO$_4$ under Hydrostatic Pressure},
author = {Ugne Miniotaite and Ola Kenji Forslund and Elisabetta Nocerino and Frank Elson and Rasmus Palm and Nami Matsubara and Yuqing Ge and Rustem Khasanov and Genki Kobayashi and Yasmine Sassa and Jonas Weissenrieder and Vladimir Pomjakushin and Daniel Andreica and Jun Sugiyama and Martin Månsson},
journal= {arXiv preprint arXiv:2212.08439},
year = {2023}
}
Comments
8 pages, 6 figures, submitted as a part of the International Conference on Muon Spin Rotation, Relaxation and Resonance 2022. Accepted Dec 2022