Abstract by Alex Shaw
Physics and Astronomy
High Entropy Oxide Data Analysis
Recent experiments have provided insight into a new high-entropy oxide material Mg0.2Ni0.2Co0.2Cu0.2Zn0.2O (MgO-HEO). Neutron diffraction has confirmed an antiferromagnetic ordering in the crystal at low temperature. However, muon spin relaxation (μSR) experiments seem to suggest a highly disordered or random arrangement of spins, which would be inconsistent with antiferromagnetic order. To seek compatibility between these results, we computed magnetic field distributions in MgO-HEO using self-developed software. We confirmed locations in the crystal that give us wide distributions of magnetic fields even with perfect antiferromagnetic order. These distributions are consistent with the observed data, thereby demonstrating the compatibility between an antiferromagnetic structure and a disordered magnetic field in our high entropy oxide.