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首页> 外文期刊>日本セラミックス協会学術論文誌 >Diffusion of Scandium, Gallium and Ytterbium Ions into Single- and Poly-Crystalline Yttrium Aluminum Garnets
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Diffusion of Scandium, Gallium and Ytterbium Ions into Single- and Poly-Crystalline Yttrium Aluminum Garnets

机译:Scan,镓和Y离子向单晶和多晶钇铝石榴石的扩散

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摘要

Diffusion of scandium, gallium and ytterbium ions into single- and poly-crystalline yttrium aluminum garnets has been studied. Volume diffusion coefficients of gallium ions in single crystals were larger than those of scandium and gallium ions. On the other hand, the diffusion coefficients of scandium and ytterbium ions took almost the same values. The cations diffusion exhibited an extrinsic behavior. Cation ratio of Y/Al influenced the diffusivity of scandium and ytterbium diffusion. The yttrium-rich YAG had a smaller concentration of yttrium vacancies than that with a stoichiometric composition. The scandium and ytterbium ions preferentially diffused along grain boundaries.
机译:已经研究了of,镓和离子向单晶和多晶钇铝石榴石中的扩散。镓离子在单晶中的体积扩散系数大于scan和镓离子。另一方面,of和and离子的扩散系数几乎相同。阳离子扩散表现出非本征行为。 Y / Al的阳离子比影响of和diffusion的扩散率。富含钇的YAG的钇空位浓度比具有化学计量组成的YAG空位浓度小。 dium和and离子优先沿晶界扩散。

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