The number and the peak temperature as well as order-disorder effect of total phase transition are related to the centre metal ions.

固—固相变数目、相变温度和相变的有序—无序效应主要取决于中心金属离子的种类。

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For smaller clusters, there is no clear characteristic of first-order phase transition during the melting, implying a coexistence of solid and liquid phases due to finite-size effect.

对于较小的团簇，融化曲线没有出现清楚的一级相变特征，意味着由于尺寸效应导致的固态液态共存。

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It is proved strictly that this incommensurate phase transition is of second order.

严格证明了该非公度相变是第二类的。

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