论文标题
多功能$^7 $ lifepo $ _4 $在静水压力下的磁性特性
Magnetic Properties of Multifunctional $^7$LiFePO$_4$ under Hydrostatic Pressure
论文作者
论文摘要
LifePo $ _4 $（LFPO）是一种用于可充电锂离子电池的原型且知名的阴极材料。但是，其准二维（Q1D）结构与FE离子一起，LFPO还显示出有趣的低温磁性。我们的团队以前已经利用了MUON自旋旋转（$μ^+$ SR）技术来研究LFPO中的磁性自旋顺序以及锂离子扩散。在这项初步研究中，我们扩展了调查，并利用高压$μ^+$ sr来研究对低$ t $磁性订单的影响。与理论预测相反，我们发现磁性排序温度以及有序的磁矩在高压（压缩应变）下增加。
LiFePO$_4$ (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).
