ABSTRACT Polycrystals of hexagonal δ-phase UZr have been synthesised and studied by means of heat capacity, magnetic susceptibility, magnetisation, electrical resistivity, magnetoresistance, thermoelectric power, thermal conductivity measurements, for the first time, at temperatures from 1.8 to 300 K and in magnetic fields up to 8 T. The weak temperature dependence of the magnetic susceptibility and the small value of both Seebeck (0.75 μV/K at room temperature) and of the Sommerfeld coefficient (13.5 mJ mol K ) point to 5f-electrons in this material having a delocalised nature. The electrical resistivity and magnetoresistance indicate the presence of significant electronic disorder in δ-UZr , consistent with the disorder in its crystal structure. Density functional theory calculations have been performed and compared to experimental results.

中文翻译：

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δ相 UZr2 的磁学、输运和热学性质

摘要 通过热容、磁化率、磁化强度、电阻率、磁阻、热电功率、热导率测量合成和研究了六方 δ 相 UZr 多晶，这是首次在 1.8 至 300 K 和高达 8 T 的磁场。 磁化率的微弱温度依赖性以及 Seebeck（室温下为 0.75 μV/K）和 Sommerfeld 系数（13.5 mJ mol K）的小值表明该材料中存在 5f 电子具有非本地化的性质。电阻率和磁阻表明 δ-UZr 存在显着的电子无序，与其晶体结构的无序一致。已执行密度泛函理论计算并与实验结果进行比较。