We present an explicit, simple and yet accurate expression of the heat capacity of solids by approximating the Debye integral. This model can be used for temperatures greater than one-tenth of Debye temperature. The results of this approximate model are finally compared with experimental data of Cu, MgO and ZnO and show a very good agreement.

中文翻译：

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固体热容的近似模型

我们通过逼近德拜积分，给出了固体热容的明确、简单且准确的表达式。该模型可用于高于德拜温度十分之一的温度。最后将该近似模型的结果与 Cu、MgO 和 ZnO 的实验数据进行比较，并显示出非常好的一致性。