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- W2000497705 abstract "Abstract We have studied physical properties and crystal structures for oxygen-deficient phases of the cubic ordered-perovskite cuprate, Sr 2 Cu(Re 0.69 Ca 0.31 )O y ( y =6.0−5.4). It was found that the magnetic state undergoes phase transition from ferrimagnetic long-range order for y ⩾5.9 to paramagnetism for y ⩽5.7 via re-entrant-type spin-glass randomness in the narrow composition range around y ∼5.8, as the oxygen content y decreases. The electrical resistivity becomes insulated, and the lattice constant expands simultaneously with decrease in y . The abrupt suppression of the ferrimagnetic state was observed in the oxygen-deficiency phase around 5.9⩾ y ⩾5.7. This is presumably attributed to microscopic phase separation accompanied by the partial cut-off of the Cu–O–Cu antiferromagnetic correlation path, which is caused by cation disorder and reduction of the oxidation state of the cations." @default.
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- W2000497705 date "2007-05-01" @default.
- W2000497705 modified "2023-09-23" @default.
- W2000497705 title "Oxygen-deficiency effect on properties for the ordered-perovskite cuprate, Sr2Cu(Re0.69Ca0.31)O (y=6.0−5.4)" @default.
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- W2000497705 doi "https://doi.org/10.1016/j.jmmm.2006.09.013" @default.
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