The steady-state creep rate of La1-xSrxMnO3, where x was equal to 0.10, 0.15 or 0.25, decreased with increasing Sr content in a regime where diffusional creep was the predominant deformation mechanism. This composition effect, when compared with existing point-defect models, suggested that the rate-controlling species for mass transport in the present material was the lattice diffusion of La or Mn. This was in accord with previous creep and sintering results. It was concluded that diffusional creep could be effectively used to investigate mass transport in this material.

J.Wolfenstine, K.C.Goretta, R.E.Cook, J.L.Routbort: Solid State Ionics, 1996, 92[1-2], 75-83