| Definition: | compound superconductor with a layered structure containing FePn layers (Pn = As, P)
Note 1 to entry: REFeAs(O,F) [RE = rare earth], CaFeAsF, (AE,K)Fe2As2 [AE = Sr, Ba], LiFeAs, FeCh [Ch = Se, (Se,Te), (S,Te)], Sr2ScFePO3 and AEm+n+1MmFe2As2O3m+n -1 [AE = Ca, Sr, Ba, M = V, Sc, (Mg,Ti), (Al,Ti), (Sc,Ti), m = 2,3,4,5, n = 0,1] systems are typically included. Note 2 to entry: This entry was numbered 815-11-20 in IEC 60050-815:2015.
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