Answer to Question #252005 in Electricity and Magnetism for Sony

Question

For Nickel, the number density is 8à ƒ —1023 atoms/cm3 and the electronic configuration is 1s2 2s2 2p6 3s2 3p6 3d8 4s2. The value of saturation magnetisation of Nickel in its ferromagnetic states is : (use à Ž ¼B= 9.21à ƒ —10à ¢ ˆ ’21 Am2)

a. 3.87à ƒ —108A/m

b. 4.97à ƒ —108A/m

c. 4.87à ƒ —109A/m

d. 3.97à ƒ —109A/

Answer 1

The saturation magnetization is

$$M_s=0.6\mu_BN,\\ M_s=0.6(9.21×10^{−21})(8×10^{29}),\\ M_s=4.42·10^9\text{ A/m}.$$