How Does Earth's Magnetic Field Persist Despite High Temperatures?

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Oomph!
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Hi, everyone.

I read how occurs magnetic field in Earth. However, the temperature of outer and inner core is bigger than Curie temperature of iron. So, I have one question. If they have bigger temperature than Curie temperature, how they can have magnetic properties?

Thank you.
 
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They still carry currents. This would be true if the core were made of gold or copper instead of iron.