Magnetic order and frustrated dynamics in Li(Ni0.8Co0.1Mn0.1)O2: a study by {\mu}+SR and SQUID magnetometry

TL;DR

This study investigates the magnetic properties of Li(Ni0.8Co0.1Mn0.1)O2, revealing complex frustrated magnetic states and transitions from 3D to 2D spin-glass behavior, relevant for battery material applications.

Contribution

It provides new insights into the magnetic behavior and phase transitions of Li(Ni0.8Co0.1Mn0.1)O2 using muon spin rotation and magnetometry, highlighting its frustrated magnetic states.

Findings

Localized magnetic moments develop below 70 K

Frustrated 3D magnetic ground state at 2 K

Transition to 2D spin-glass above 22 K

Abstract

Recently, the mixed transition metal oxides of the form Li(Ni1-y-zCoyMnz)O2, have become the center of attention as promising candidates for novel battery material. These materials have also revealed very interesting magnetic properties due to the alternate stacking of planes of metal oxides on a 2D triangular lattice and the Li-layers. The title compound, Li(Ni0.8Co0.1Mn0.1)O2, has been investigated by both magnetometry and measurements and {\mu}+SR. We find the evolution of localized magnetic moments with decreasing temperature below 70 K. The magnetic ground state (T = 2 K) is, however, shown to be a frustrated system in 3D, followed by a transition into a possible 2D spinglass above 22 K. With further increasing temperature the compound show the presence of remaining correlations with increasing effective dimensionality all the way up to the ferrimagnetic transition at TC = 70 K.