High-temperature superconductors are made of
A) metallic hydrogen.
B) noble gases like helium layered with highly reactive gases like hydrogen.
C) ceramics with copper, yttrium, barium, and oxygen.
D) 99.999% pure copper.

Question

Quizplus · Accepted Answer

High-temperature superconductors are made of ceramics with copper, yttrium, barium, and oxygen. These materials are known as cuprates and have a layered structure that allows for the flow of electrical currents with zero resistance at high temperatures. Metallic hydrogen, noble gases, and 99.999% pure copper are not used in the production of high-temperature superconductors.

High-Temperature Superconductors Are Made of