Data from: Cu1-xFexO: hopping transport and ferromagnetism

Single phase, sol–gel prepared Cu1–xFexO (0 ≤ x ≤ 0.125) powders are characterized in terms of structural, electronic and magnetic properties. Using dielectric and magnetic studies we investigate the coupling of electron and spin. The electrical conductivities and activation energies are studied with increasing Fe content. Modelling of experimental conductivity data emphasizes a single hopping mechanism for all samples except x = 0.125, which have two activation energies. Hole doping is confirmed by confirming a majority Fe3+ substitution of Cu2+ in CuO from X-ray photoelectron spectroscopy studies (XPS). Such a substitution results in stabilized ferromagnetism. Fe substitution introduces variation in coercivity as an intrinsic magnetic property in Fe-doped CuO, and not as a secondary impurity phase采用溶胶-凝胶法制备的单相Cu₁₋ₓFeₓO（0≤x≤0.125）粉体，从结构、电子与磁学性能维度开展了系统表征。本研究通过介电与磁学测试，探究了电子与自旋之间的耦合作用；针对Fe掺杂量递增条件下的电导率与活化能进行了分析。对实验电导率数据的建模结果表明，除x=0.125的样品外，所有试样均遵循单一载流子跳跃机制，而x=0.125的样品则存在两个活化能。通过X射线光电子能谱（X-ray photoelectron spectroscopy, XPS）测试证实，Fe³+取代CuO晶格中的Cu²+为主要掺杂形式，由此确认了空穴掺杂机制。该掺杂取代行为可诱导出稳定的铁磁性。Fe掺杂会调控Fe掺杂CuO的本征磁学特性——矫顽力，而非引入二次杂质相。