Opus 5.5 agents discover two room-temperature magnetic semiconductor candidates
The stronger candidate is KV[Cr(CN)6], a 1999 material the post says may already meet the room-temperature target.
The agents also designed YBaMnFeO5, but the author says its required Mn/Fe checkerboard ordering may be hard to synthesize. KV[Cr(CN)6 is predicted to have a roughly 2.1 eV band gap and spin-sorted windows well above room-temperature thermal noise. Its 1999 sample stayed magnetically ordered up to 376 K, though the post notes the band gap and spin sorting have not yet been measured. The next step, according to the author, is to remake KV[Cr(CN)6] and test that spin sorting directly. HN · Frontpage AI's note
The agents also designed YBaMnFeO5, but the author says its required Mn/Fe checkerboard ordering may be hard to synthesize. KV[Cr(CN)6 is predicted to have a roughly 2.1 eV band gap and spin-sorted windows well above room-temperature thermal noise. Its 1999 sample stayed magnetically ordered up to 376 K, though the post notes the band gap and spin sorting have not yet been measured. The next step, according to the author, is to remake KV[Cr(CN)6] and test that spin sorting directly. HN · Frontpage AI's note
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