IRRADIATION EFFECT OF 0.56GeV C^6+ on Y1.6Ca1.4V0.45Sn0.5Fe4.05O12

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Y1.6Ca1.4V0.45Sn0.5Fe4.05O12 is irradiated by 0.56GeV carbon ion.The irradiation effect is investigated by Moessbauer spctroscopy.The irradiation results in an isotropic distribution of the hyperfine magnetic field.The hyperfine magnetic fields decrease a
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