The depinning field (H _D) of vortex domain walls in a permalloy wire with an asymmetric triangle notch was investigated through magneto-optic Kerr effect (MOKE) microscopy and micromagnetic simulations. Wires of various widths with notches fixed on the wall’s incoming side angle were studied for various outgoing side angles (ϕ). The curves of H _D of wall versus ϕ were measured by MOKE microscopy. Micromagnetic simulations were used to obtain curves of the H _D of the wall versus ϕ. The maximum of such a curve of tail-to-tail -clockwise wall is known as the transition angle (ϕ _T). The shape-anisotropic energy (E _A) of the notch outgoing side wire and the exchange energy (E _Ex) of the wall–notch interaction competed to influence the ϕ _T value. Pinning potential was increased by the E _Ex when ϕ was smaller than the ϕ _T. Pinning potential was considerably reduced by the small E _A when ϕ was larger than the ϕ _T. Furthermore, the ϕ _T value changed with the decrease in the depth of the notch because E _A was influenced by notch depth.

通过磁光克尔效应 (MOKE) 显微镜和微磁模拟研究了具有不对称三角形缺口的坡莫合金线中涡旋畴壁的去钉扎场 ( H _D )。针对不同的出射侧角 ( ϕ )研究了具有固定在墙的入射侧角上的槽口的各种宽度的电线。通过 MOKE 显微镜测量壁的H _D与φ的曲线。微磁模拟用于获得壁的H _D与φ 的曲线。这种尾对尾顺时针墙曲线的最大值称为过渡角 ( ϕ _T )。形状各向异性能量 ( 缺口输出侧线的E _A ) 和壁-缺口相互作用的交换能 ( E _Ex ) 竞争影响ϕ _T值。当ϕ小于ϕ _T时，E _Ex增加了钉扎电位。当ϕ大于ϕ _T时，小E _A大大降低了钉扎电位。此外，φ _Ť与在凹口的深度的减少改变的值，因为ê_甲物通过切口深度的影响。