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In this work we report experimental evidence for the weak high-temperature ferromagnetism in Bi1-xRxFeO3 (R = Dy, Y) compounds by careful characterizations, excluding the possible side-effects from other iron-based impurities. Remarkable saturated magnetic moment was observed in the Y-substituted samples, Bi1-xYxFeO3, which is larger than the moment obtained in Bi1-xDyxFeO3, the Dy-substituted samples with antiferromagnetic background. The physical origin of the weak ferromagnetic transition is discussed and serious lattice distortions hav
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