- Niobium-Titanium (NbTi): This alloy is a low-temperature superconductor with a critical temperature of around 10 Kelvin. It is widely used in MRI machines and particle accelerators due to its reliability and strong superconducting properties.
- Yttrium Barium Copper Oxide (YBCO): A high-temperature superconductor with a critical temperature of about 93 Kelvin, YBCO is commonly used in applications such as magnetic levitation (maglev) trains and superconducting power cables. It operates at higher temperatures compared to traditional superconductors.
- Lead (Pb): Lead is a Type I superconductor with a critical temperature of approximately 7.2 Kelvin. It was among the first materials discovered to exhibit superconductivity and is still utilized in some experimental settings.
- Mercury (Hg): Discovered by Heike Kamerlingh Onnes in 1911 as the first superconducting material, mercury has a critical temperature of about 4.2 Kelvin. It is primarily of historical significance but also used in certain research applications.
- Iron-Based Superconductors: This category includes compounds such as iron selenide (FeSe) and iron pnictides. These materials are part of a newer class of high-temperature superconductors, with critical temperatures ranging up to about 55 Kelvin. They are of interest for their novel superconducting properties and potential applications in electronic devices.
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