This review paper focuses on dislocations and plastic deformation in magnesium oxide
crystals. MgO is an archetype ionic ceramic with refractory properties which is of interest in …

Stress‐strain curves are presented for MgO single crystals, compressed with (100) and (111)
stress axes, for temperatures from 1000° to 1600° C. The yield stress of (100) specimens …

A hierarchical multi-scale model was used to study the effect of high pressure on the critical
shear stresses of MgO. The two main slip systems, ½⟨ 110⟩{110} and ½⟨ 110⟩{100}, were …

This paper addresses multi-scale modeling of a special kind of pressure-dependent
plasticity. In MgO, which is a major constituent of the Earth's lower mantle, the relative activity …

The factors that control the stress–strain state of a polycrystal under differential stress
depend on whether or not plastic deformation has occurred in the solid. If not, then the …

The report compares the room temperature mechanical behavior of MgO crystals containing
fresh and grown in dislocation sources. Fresh dislocation sources introduced by cleavage or …

We present in this study modelling of dislocation core properties in MgO as a function of
pressure from ambient conditions to 100 GPa. The calculations are based on the Peierls …

We propose a multiscale model of plasticity of pure MgO single crystals. The core structure
of the rate controlling ½〈 110〉 screw dislocations has been modelled by the Peierls …

The mechanical properties of MgO single crystals have been analysed for their yielding and
work-hardening behaviour as a function of purity and deformation temperature. The …

The stress–strain response, slip mechanisms and size effect in Mg (0001) single crystal was
investigated by microcompression testing. It is found that plasticity occurs relatively …