Table 3.
Conversion from Gaussian to SI Units
| Multiply the Number for | by | To Obtain the Number for | ||
|---|---|---|---|---|
| Gaussian Quantity | Unit | SI Quantity | Unit | |
| flux density, B | G | 10−4 | flux density, B | T(≡Wb/m2 ≡Vs/m2) |
| magnetic field strength, H | Oe | 103/4π | magnetic field strength, H | A/m |
| volume susceptibility, χ | emu/cm3 (dimensionless) | 4π | rationalized volume susceptibility κ | dimensionless |
| mass susceptibility, χρ | emu/g (≡cm3/g) | 4π · 10−3 | rationalized mass susceptibility, κρ | m3/kg |
| molar susceptibility,* χmole | emu/mol (≡cm3/mol) | 4π · 10−6 | rationalized molar susceptibility, κmole | m3/mol |
| magnetization, M | G or Oe | 103
4π · 10−4 |
magnetization, M magnetic polarization, J |
A/m T |
| magnetization, 4πM | G or Oe | 103/4π 10−4 |
magnetization, M magnetic polarization, J |
A/m T |
| magnetization, M | μB/atom or μB/form. unit, etc.** | 1 | magnetization, M | μB/atom or μB/form. unit, etc.** |
| magnetic moment of a dipole, m | erg/G | 10−3 | magnetic moment of a dipole, m | J/T (≡Am2) |
| demagnetizing factor, N | dimensionless | l/4π | rationalized demagnetizing factor, N | dimensionless |
a
Also called atomic susceptibility. Molar susceptibility is preferred since atomic susceptibility has also been used to refer to the susceptibility per atom.
**
“Natural” units, independent of unit system. However, the numerical value of the Bohr magneton does depend on the unit system.