Earth's Iron Core — Interactive 3D Animation

Earth's Iron Core · Why It Stays Molten

unseel.com · molten Fe–Ni · geodynamo · inner-core crystallization

Inner core ≈5700 K
Pressure ≈360 GPa

phase —

Molten outer core (liquid Fe)
Solid inner core (hcp ε-Fe)
Magnetic field lines
Light-element buoyancy (S,O,Si)
Mantle · crust