Nickel is ferromagnetic at room temperature. At a value of h field of 5 \times 10 ^ { 5 } \mathrm {~a} / \mathrm { m }, nickel saturates. Nickel shows ferromagnetic property at room temperature.
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Nickel exhibits ferromagnetism because of a quantum physical effcet called exchange coupling in which the electron spins of one atom interact with those of neighbouring atoms.
Identify the property of nickel at room temperature:
, is approximately 4π ×10−7 t m/a. The dipoles still tend to align with an external field but much more weakly and thermal agitation can now more easily disrupt the alignment. To find the magnetization vector m of the nickel sample, we can use the relationship between the magnetic field b, the magnetic field strength h, and the magnetization m. The result is alignment of the.
To find the magnetization vector m of nickel, we use the formula: Most of such materials become simply paramagnetic , i.e. M = μ0 b −h where b = 1.25 t and h = 5×105 a/m. If the temperature is increased beyond curie temperature, then it will show (a)
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Nickel exhibits ferromagnetism due to a quantum physical effect called exchange coupling in which electron spins of one atom interact with those of neighboring atoms. This means that it has a strong magnetic moment and can be. The magnetic field b is 1.25 t.
