Magnetisation Curve: Copper Ions & Behaviour Explained

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In summary, the magnetization curve of a molecule-based material with Copper ions present shows an initial increase in sample magnetization with increasing applied field, followed by a peak and then a decrease. When the applied field is negative, the sample magnetization initially decreases and then increases in the negative direction. This behavior is due to the strong magnetic moment of the copper ions in the material. The oxidation state for Copper ions present in this material is +2.
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Dampi
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I have been given this magnetization curve of a molecule- based material with Copper ions present.

In general, when applied field (T) increases initially, the sample magnetization increases and reaches a peak. Then it decreases as applied field keeps increasing.

When the applied field is negative, the sample magnetization decreases and reaches a point initially, then the curve reverses and starts increasing in magnetization of the sample in the negative direction.

What is the reason for this behaviour? what is the oxidation state for Copper ions?
 
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The reason for this behaviour is that the copper ions in the material have a strong magnetic moment. As the applied field increases, the magnetic moments of the copper ions align with the applied field. When the applied field is negative, the magnetic moments of the copper ions reverse direction and begin to oppose the applied field, resulting in an increased magnetization in the negative direction. The oxidation state for Copper ions is +2.
 

1. What is a magnetisation curve?

A magnetisation curve, also known as a hysteresis curve, is a graphical representation of the relationship between the magnetic field strength and the magnetic flux density in a material. It shows how a material responds to changes in the applied magnetic field.

2. How are copper ions involved in magnetisation?

Copper ions are not inherently magnetic, but they can become magnetized when they are placed in a strong magnetic field. This is because the electrons in copper ions have a small magnetic moment, which can align with the external magnetic field and contribute to the overall magnetization of the material.

3. What factors affect the behavior of copper ions in a magnetic field?

The behavior of copper ions in a magnetic field is affected by the concentration of copper ions, the strength of the magnetic field, and the temperature of the material. Higher concentrations of copper ions and stronger magnetic fields will result in a higher degree of magnetization, while higher temperatures can disrupt the alignment of the ions and decrease the overall magnetization.

4. How does the magnetisation curve of copper ions differ from other materials?

The magnetisation curve of copper ions differs from other materials because copper is a non-ferromagnetic material, meaning it does not have a spontaneous magnetic moment or a permanent magnetic field. Instead, its magnetization is induced by an external magnetic field and is directly proportional to the strength of that field.

5. What practical applications does the understanding of copper ion magnetisation have?

The understanding of copper ion magnetisation has several practical applications, including in the development of magnetic storage devices, magnetic sensors, and magnetic shielding. It can also be used in industries such as electronics, power generation, and transportation where the manipulation of magnetic fields is crucial.

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