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Sr(4 + n)Mn(3+)(4)Mn(4+)(n)O(10 + 3n): a new homologous series of oxygen-vacancy-ordered perovskites built from Mn(3+)O(5) pyramids and Mn(4+)O(6) octahedra

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A new homologous series of oxygen-vacancy-ordered perovskites with the formula Sr_{4+n}Mn;{3+}_4Mn;{4+}_nO_{10+3n} is proposed based on the structural trends found for the recently described Sr(4)Mn(4)O(10), Sr(5)Mn(5)O(13) and Sr(7)Mn(7)O(19) compounds. These... ...