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An anomalous enhancement of the magnetic susceptibility of Ca 2 Fe 2 O 5 taken in low magnetic fields applied perpendicular to the b axis has been reported to occur in the interval 60 K⩽T⩽140 K, but with few experimental details and no explanation of the phenomenon. Reexamination of the magnetic susceptibility taken with H=10 Oe on a high-quality single crystal has corroborated...
Fabrication of a dense membrane of the cubic perovskite SrMnO 3-δ has been achieved with the aid of chelated precursors and firing/cooling in an Ar atmosphere. The as-prepared SrMnO 2.66 orthorhombic perovskite converts in air near 300 o C to a cubic SrMnO 2.97 that loses oxygen in the range 700<T<950 o C to become...
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