The dopping effects of La and Ce induce the aberrance of stress field of diffusive medium, which decrease the activation energy of particles diffusing, and accelerate particles diffusing during the solid state reaction.

• 稀土离子的掺杂作用,导致扩散介质中应力场的畸变,降低了质点的扩散活化能,从而对固相反应中的质点扩散起促进作用。