TY - JOUR
T1 - Superconductivity and weak ferromagnetism in Eu1.4Ce0.6Ru1-xFexSr 2Cu2O10-δ
AU - Felner, I.
AU - Asaf, U.
PY - 1997/12/10
Y1 - 1997/12/10
N2 - The system Eu1.4Ce0.6Ru1-xFexSr 2Cu2O10-δ with x = 0, 0.13 and 0.25 has been studied by dc magnetometry to determine the superconducting and weak-ferromagnetic (W-FM) properties. Eu1.4Ce0.6RuSr2Cu2O 10-δ is a magneto-superconductor with TM(Ru) = 122 and TC = 32 K thus TM ≫ TC. Superconductivity is confined to the CuO2 planes, and the magnetic ordering is due to the Ru sublattice. The effect of Fe (x = 0.13 and 0.25) is: (i) to suppress SC in both compounds and (ii) to diminish the weak-ferromagnetic (W-FM) properties (e.g. the saturation moment (Msat) and the remanent moments) of the Ru sublattice. The fast drop in Msat at 5 K scales with Fe concentration. Mossbauer spectroscopy studies reveal two inequivalent Fe sites, and that in both sites, Fe does not order magnetically. This proves that the W-FM state is due to the Ru site.
AB - The system Eu1.4Ce0.6Ru1-xFexSr 2Cu2O10-δ with x = 0, 0.13 and 0.25 has been studied by dc magnetometry to determine the superconducting and weak-ferromagnetic (W-FM) properties. Eu1.4Ce0.6RuSr2Cu2O 10-δ is a magneto-superconductor with TM(Ru) = 122 and TC = 32 K thus TM ≫ TC. Superconductivity is confined to the CuO2 planes, and the magnetic ordering is due to the Ru sublattice. The effect of Fe (x = 0.13 and 0.25) is: (i) to suppress SC in both compounds and (ii) to diminish the weak-ferromagnetic (W-FM) properties (e.g. the saturation moment (Msat) and the remanent moments) of the Ru sublattice. The fast drop in Msat at 5 K scales with Fe concentration. Mossbauer spectroscopy studies reveal two inequivalent Fe sites, and that in both sites, Fe does not order magnetically. This proves that the W-FM state is due to the Ru site.
UR - http://www.scopus.com/inward/record.url?scp=0031333090&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(97)01673-0
DO - 10.1016/S0921-4534(97)01673-0
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AN - SCOPUS:0031333090
SN - 0921-4534
VL - 292
SP - 97
EP - 103
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - 1-2
ER -