LK-99 also called PCPOSOS, is a gray–black, polycrystalline compound, identified as a copper-doped lead‒oxyapatite. A team from Korea University led by Lee Sukbae (이석배) and Kim Ji-Hoon (김지훈) began studying this material as a potential superconductor in 1999, and in July 2023 published preprints claiming that it acted as a room-temperature superconductor at temperatures of up to 400 K (127 °C; 260 °F) at ambient pressure.
LK-99 also called PCPOSOS, is a gray–black, polycrystalline compound, identified as a copper-doped lead‒oxyapatite. A team from Korea University led by Lee Sukbae (이석배) and Kim Ji-Hoon (김지훈) began studying this material as a potential superconductor in 1999, and in July 2023 published preprints claiming that it acted as a room-temperature superconductor at temperatures of up to 400 K (127 °C; 260 °F) at ambient pressure.
Source: Wikipedia "LK-99" · CC BY-SA 4.0
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