Abstract We first found that ScCo(CN)6 of Prussian blue analogues has a large isotropic negative thermal expansion which occurs in a wide temperature range from 25K to 600K. More intriguingly, the present material of ScCo(CN)6 exhibits the merits of the facile fabrication via chemical coprecipitation and the good environment stability of water-free, which are very important for the applications. The transverse vibration of C and N atoms is critical for the occurrence of negative thermal expansion, which is confirmed by the atomic mean square relative displacements. The present new material of ScCo(CN)6 will be promising for the applications.

中文翻译：

---

ScCo(CN)6 无水普鲁士蓝类似物的大各向同性负热膨胀

摘要 我们首先发现普鲁士蓝类似物的 ScCo(CN)6 具有较大的各向同性负热膨胀，其发生在 25K 至 600K 的宽温度范围内。更有趣的是，目前的 ScCo(CN)6 材料表现出通过化学共沉淀法制备的简便性和无水环境的良好稳定性，这对应用非常重要。C和N原子的横向振动对于负热膨胀的发生至关重要，这由原子均方相对位移证实。目前的ScCo(CN)6新材料将有望用于应用。