Question

(1). A particular paramagnetic substance achieves 10.0% of its saturation magnetization when placed in a magnetic field of 5.00 T at a temperature of 4.00 K. The density of magnetic atoms in the sample is 8.00 x 1027 atoms/m3, and the magnetic moment per atom is 5.00 Bohr magnetons. Calculate the Curie constant for this substance.

(2). The magnetic moment of the Earth is approximately 8.00 x 1022 A∙m2. a. If this were caused by the complete magnetization of a huge iron deposit, how many unpaired electrons would this correspond to? b. At two unpaired electrons per iron atom, how many kilograms of iron would this correspond to? (Iron has a density of 7 900 kg/m3, and approximately 8.50 x 1028 iron atoms/m3.)

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Answer 1

Giwa that? ficial t:1 穷.oo? aㅏ LE era 21 rapamagnt andb , L Auo

ILD t D pmxinalay mornak 아 а.ndla eleshonagem., mes uelehtn.. 9.23 지。 8.0x10 Am yty 0.8629 지o

so unpa T/2 8.6310 2 4. 8.50x102 atoms 1o 5:0964x106 m3 V- 0m3 20 20