Show Magnetic materials
ID 5
Symbol Co
Image
Name Cobalt
Categories Transition metal
Density (g/cm<sup>3</sup>) 8.92
Structure Simple hexagonal
Order Ferromagnetic
Curie temperature (K) 1394
Cubic lattice parameter (p<sub>m</sub>) (a<sub>0</sub>)
Magnet ideality factor (p<sub>m</sub>) (a) 250.7
Resistivity (μΩ·m) (ρ) 0.06
Magnetic moment per unit mass (A m<sup>2</sup> kg<sup>-1</sup>) (σ) 162
Exchange stiffness (pJ m<sup>-1</sup>) (A) 31
Magnetic hardness parameter (κ) 0.45
Spontaneous magnetization (MA m<sup>-1</sup>) M<sub>s</sub>) 1.44
Spontaneous linear magnetostriction (λ<sub>s</sub>) −60 × 10<sup>−6</sup>
Anisotropy constants (KJ m<sup>-3</sup>) (K1) 410
Magnetic polarization (T) (J<sub>s</sub>) 1.81
Image Source https://www.ccdc.cam.ac.uk/Community/educationalresources/PeriodicTable/Cobalt/