Abstract
The low-temperature magnetic properties of polycrystalline , a candidate material for the realization of a quantum spin-liquid state, were investigated by means of muon-spin relaxation and nuclear magnetic resonance methods under chemical and hydrostatic pressure. The Li-for-Na chemical substitution promotes an inhomogeneous magnetic order, whereas hydrostatic pressure (up to 3.9 GPa) results in an enhancement of the ordering temperature . In the first case, the inhomogeneous magnetic order suggests either short- or long-range correlations of broadly distributed ½ magnetic moments, reflecting local disorder. The increase of under applied pressure points at an increased strength of three-dimensional interactions arising from interlayer compression.
7 More- Received 20 June 2018
- Revised 28 August 2018
DOI:https://doi.org/10.1103/PhysRevB.98.104421
©2018 American Physical Society