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, 1: Sample assembly for doping experiments. The assembly was annealed at 0.30 ± 0, p.1

, GPa and 1060 ± 25 °C during 24 h, using a Paterson press

, (a) SEM image of the sample RDPC1, TEM images of microstructures in 1077 polycrystalline samples (b) RDPC1 and (c) RDPP1, and HR-TEM image of a characteristic 1078

, Arrhenius diagrams for 40 Ar, 38 Ar, and 36 Ar diffusion coefficients obtained from step 1081 heating analyses of polycrystalline olivine samples (a) RDPC1, (b) RDPP1, and (c), pp.1-2