# Homework Help: Magnetic moment calculation from curie constant (thought this was easy!)

1. Aug 9, 2010

### mloving86

1. The problem statement, all variables and given/known data

Need to calculate magnetic moment of FeRh from the curie constant which was obtained from a linear fit of inverse susceptibility data.

CGS units!

C = 68 (cm3K)/mole
N = Avogadro constant 6.022E23 atoms/mole
K = Boltzmann constant 1.38E-16 erg/K
uB = Bohr magnetons 9.274E-21 erg/G
ueff = unknown effective magnetic moment

want the solution in terms of bohr magnetons.

Relevant conversion factors:
erg = 4pi cm3Oe2
1 G = 4pi Oe

2. Relevant equations

ueff=((3KC)/N)1/2; which simplifies to ueff= 2.84C^(1/2)

3. The attempt at a solution
($$\frac{3 * 1.38E-16 erg/K * 68 cm3K/mole}{6.022E23atom/mole}$$)1/2

= ~24uB.

I expect my solution to be closer to 3.2. Does anyone know if there is something typically done after these sorts of calculations that I need to do?

Last edited: Aug 9, 2010
2. Jul 13, 2015