The observation of magnetic domain using the magnetic Kerr effect shows the 180˚ and zig-zag domains in (110) [001] 3% SiFe due to the H-field below and above Φ$\simeq$30˚ respectively, which is the angle between the H-field and [001] direction.
The magneto-acoustic emission (MAE) signal at Φ = 0˚ splits into two peaks at the coercive force during half a cycle of B-H hysteresis loop. The new peak appears between the original two peaks from Φ = 30˚, which splits into two peaks from Φ = 60˚. The MAE energy and the B-H hysteresis loss increase with Φ at 0˚≤ Φ ≤ 90˚. The MAE energy increases as the magnetizing frequency increases, however, the rate decreases above the frequency where the skin depth effect becomes apparent. The MAE energy increases with tensile stresses up to $11.2×10^6 Nm^{-2}$, followed by a decrement with further stress.
The envelope of Barkhausen noise (BN) during half a cycle of B-H loop shows two peaks like the MAE at Φ = 0˚ and the new peaks between and outside them at Φ ≥ 30˚. The BN energy drops sharply at Φ = 30˚ and then becomes constant.
