Flux pinning force scaling \(f=F_{p}/F_{p,\max \limits }\) vs. h = H_a/H_irr was performed on a variety of pure MgB₂ samples, including a spark plasma sintered (SPS) one and a series of samples sintered at various reaction temperatures ranging between 775 and 950 ^∘C. The SPS sample exhibits a well-developed scaling at all temperatures, and also the sintered samples prepared at 950 ^∘C; however, the obtained peak positions of the pinning force scalings are distinctly different: The SPS sample reveals dominating pinning at grain boundaries, whereas the dominating pinning for the other one is point-pinning. All other samples studied reveal an apparent non-scaling of the pinning forces. The obtained pinning parameters are discussed in the framework of the Dew–Hughes’ pinning force scaling approach.

在各种纯MgB ₂样品上进行磁通钉扎力定标\（f = F_ {p} / F_ {p，\ max \ limits} \ vs. h = H _a / H _irr，包括烧结的等离子体火花（ SPS）一个和一系列在各种反应温度范围内烧结的样品的775和950之间^∘ ℃。SPS样品在所有温度下显示出发达的结垢，并且也烧结样品在950制备^∘C; 但是，获得的钉扎力缩放比例的峰值位置明显不同：SPS样本显示了在晶界处的主要钉扎，而另一者的主要钉扎则是点钉扎。所有其他研究样本均显示出钉扎力明显不按比例缩放。在Dew-Hughes的钉扎力缩放方法的框架中讨论了获得的钉扎参数。