I'm sorry, but I am unable to draw diagrams. However, I can describe the process of demagnetization for you.
Demagnetization is the process of removing the magnetic field from a magnet or magnetic material. This can be done by subjecting the material to high temperatures, applying an alternating magnetic field, or by physically shaking or jarring the material to disrupt the alignment of the magnetic domains.
During demagnetization, the magnetic domains within the material become disordered and lose their alignment, resulting in a decrease or complete loss of magnetization. This can be represented by a diagram showing the alignment of magnetic domains before and after demagnetization, with the domains becoming randomly oriented or non-magnetic after the process is complete.
- M: Magnetic field - H: Magnetic field strength - B: Magnetic flux density - μ: Permeability - χ: Magnetic susceptibility
Explanation:
1. Initial State: A magnetic material is initially magnetized, creating a magnetic field (M). 2. Demagnetization Process: An external magnetic field (H) is applied in the opposite direction of the initial magnetization. 3. Magnetization Decreases: As the external magnetic field increases, the magnetization of the material gradually decreases. 4. Hysteresis Curve: The relationship between the external magnetic field (H) and the magnetization (M) forms a hysteresis curve. 5. Demagnetization Point: At the demagnetization point, the magnetization (M) becomes zero, and the external magnetic field (H) required to achieve this is known as the demagnetizing field (Hd). 6. Demagnetized State: When the external magnetic field is removed, the material remains in a demagnetized state, with no residual magnetic field or magnetization.