Effect of Loading and Heating History on Deformation of LaCoO(3)

The aim of this work was to study cyclic stress–strain deformation behavior of LaCoO(3) as a function of loading and heating history. The ferroelastic hysteretic deformation of LaCoO(3) at different stresses and temperatures was characterized using effective Young’s modulus, hysteresis loop area and creep strain shift parameters. The deformation behavior of LaCoO(3) was not significantly affected by the previous loading and heating history when tested at constant temperature. The high temperature strength and Young’s modulus of LaCoO(3) were higher compared to at room temperature. A creep strain shift parameter was introduced to characterize creep strain in LaCoO(3) for the first time.