We investigate the ellipse arrays of permalloy elements 6.45 μm in long axis, 0.75 μm in short axis, and 35nm thick, fabricated by electron beam lithography and lift-off technique. When the interparticle spacing along short-axis is smaller than the ellipse short axis, the interparticle dipole interaction plays an important role in the magnetization reversal process. In the situation, it has been observed that hysteresis loops obtained by vibrating sample magnetometer measurements strongly depend on the field direction. The results suggest that the effect of interparticle dipole interaction and array anisotropy should be taken into account to successfully design spintronic devices.