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Petar Mali
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One question? Neel temperature is temperature in which magnetisation is equal to zero?
Petar Mali said:Can I say for [tex]\sigma=0[/tex], [tex]T=T_N[/tex]?
The Neel temperature is a critical temperature at which certain materials undergo a phase transition from a magnetically ordered state to a disordered state. This temperature is named after physicist Louis Neel, who discovered it in 1936.
At the Neel temperature, the magnetization of a material becomes equal to zero. This is because the thermal energy at this temperature is strong enough to overcome the interatomic magnetic forces, causing the magnetic moments of atoms to become disordered and cancel each other out.
The Neel temperature of a material depends on its composition, crystal structure, and external factors such as pressure and magnetic field. Materials with stronger interatomic magnetic interactions will have a higher Neel temperature.
No, the Neel temperature varies for different materials. It can range from a few degrees Kelvin to thousands of degrees Kelvin, depending on the material's properties. Some materials, such as iron, have a higher Neel temperature than others.
The Neel temperature is a crucial characteristic in understanding the magnetic properties of materials. It helps scientists predict how a material will behave at different temperatures and how it can be used in various applications, such as in data storage devices or magnetic sensors.