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I place a sample of material into a region with a strong magnetic field. Explain what happens to the material when I put it in and what happens when I take it out, if the material is (a) aluminum (paramagnetic), (b) copper (diamagnetic), or (c) nickel (ferromagnetic).

I place a sample of material into a region with a strong magnetic field. Explain what happens to the material when I put it in and what happens when I take it out, if the material is (a) aluminum (paramagnetic), (b) copper (diamagnetic), or (c) nickel (ferromagnetic).

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**Magnetic Properties of Materials** When different types of materials are placed in a strong magnetic field, their behaviors vary based on their magnetic properties: 1. **Aluminum (Paramagnetic):** - *In the Magnetic Field:* Aluminum becomes weakly magnetized in the direction of the magnetic field. This effect is due to the alignment of its atomic magnetic dipoles with the field. - *Out of the Magnetic Field:* Once removed, the material loses its magnetization as the thermal motion randomizes the dipole orientations. 2. **Copper (Diamagnetic):** - *In the Magnetic Field:* Copper creates a weak magnetic field in the opposite direction to the applied magnetic field. This occurs because the induced magnetic moments oppose the external field. - *Out of the Magnetic Field:* When taken out, copper quickly loses its induced magnetism as it does not retain any magnetic properties. 3. **Nickel (Ferromagnetic):** - *In the Magnetic Field:* Nickel becomes strongly magnetized as its domains align with the magnetic field. This material exhibits a large net magnetization. - *Out of the Magnetic Field:* Even after the external field is removed, nickel retains some level of magnetization due to the persistence of aligned domains, a property known as remanence. Understanding these behaviors is essential when studying magnetic properties and applications of different materials in varying fields.
Transcribed Image Text:**Magnetic Properties of Materials** When different types of materials are placed in a strong magnetic field, their behaviors vary based on their magnetic properties: 1. **Aluminum (Paramagnetic):** - *In the Magnetic Field:* Aluminum becomes weakly magnetized in the direction of the magnetic field. This effect is due to the alignment of its atomic magnetic dipoles with the field. - *Out of the Magnetic Field:* Once removed, the material loses its magnetization as the thermal motion randomizes the dipole orientations. 2. **Copper (Diamagnetic):** - *In the Magnetic Field:* Copper creates a weak magnetic field in the opposite direction to the applied magnetic field. This occurs because the induced magnetic moments oppose the external field. - *Out of the Magnetic Field:* When taken out, copper quickly loses its induced magnetism as it does not retain any magnetic properties. 3. **Nickel (Ferromagnetic):** - *In the Magnetic Field:* Nickel becomes strongly magnetized as its domains align with the magnetic field. This material exhibits a large net magnetization. - *Out of the Magnetic Field:* Even after the external field is removed, nickel retains some level of magnetization due to the persistence of aligned domains, a property known as remanence. Understanding these behaviors is essential when studying magnetic properties and applications of different materials in varying fields.
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