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The Nd and Co co-doped Bi 1-x Nd x Fe 0.96 Co 0.04-O 3 (x = 0.02-0.20) powders and ceramics were synthesized by a modified solid state method. The structure distortion was observed from rhombohedral into orthorhombic phase by X-ray diffraction. The enhanced ferroelectric and ferromagnetic behavior of the ceramics was obtained by Nd and Co codoping. With increasing Nd concentration, the remnant polarization and the remnant magnetization were improved. When x = 0.1, the co-doped Bi 1-x Nd x Fe 0.96 Co 0.04 O 3 ceramics possessed the largest remnant polarization of 11.77 lC/cm 2 . When x = 0.15, the largest remnant magnetization reached to 0.3319 emu/g. The relationship between the multiferroic properties and A, B site co-substitution was investigated.

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