Table 1: Weight ratios of nanoparticles and magnet height for parametric study.

Weight ratio of nanoparticles   2.22% 6.38% 10.20% Distances between substrate and magnet (mm)  Magnetic field (Tesla, T) 1.0 mm 1.25 mm 1.5 mm 0.220 T 0.191 T 0.168 T 1.25 mm 1.5 mm 1.75 mm 0.191 T 0.168 T 0.148 T 1.5 mm 1.75 mm 2.0 mm 0.168 T 0.148 T 0.133 T