How do ice giants maintain their magnetic fields?
Evidence of superionic ice provides new insights into the unusual magnetic fields of Uranus and Neptune
Not all ice is the same. The solid form of water comes in more than a dozen different—sometimes more, sometimes less crystalline—structures, depending on the conditions of pressure and temperature in the environment. Superionic ice is a special crystalline form—half solid, half liquid—and electrically conductive. Its existence has been predicted on the basis of various models and has already been observed on several occasions under extreme laboratory conditions. However, the exact conditions at which superionic ices are stable remain controversial.
A team of scientists led by Vitali Prakapenka from the University of Chicago, which also includes Sergey Lobanov from the German Research Center for Geosciences GFZ Potsdam, has now measured the structure and properties …
More on: phys.org