The 0.8Bi_3.15Nd_0.85Ti₃O₁₂ (BNdT)-0.2CoFe₂O₄ (CFO) composite multiferroic ceramics have been fabricated by spark plasma sintering (SPS) at 850 °C. The relative density of as-sintered SPS ceramic reaches 97.4 (±0.3)%. The composites are composed of pure BNdT and CFO phases without any preferred c-orientation. The a-orientation preference is more obvious perpendicular to the pressure direction. The average grain-sizes of BNdT and CFO are 163 and 146 nm, respectively. The BNdT phase has more grains below 100 nm (∼20%). The super energy-dispersive X-ray analyses suggest no serious reaction between BNdT and CFO. The Raman spectrum verifies the nano-structure of the SPS ceramic via the broadening bands and peak shifts. The Curie temperature of the SPS ceramic declines to 560 °C with stabilized dielectric loss. The grain boundary resistance plays a dominant role on impedance above 700 °C. The remanent polarization approaches to 15.2 μC/cm² (300 kV/cm) with lower coercive fields (−89/+95 kV/cm).

0.8Bi _3.15 Nd _0.85 Ti ₃ O ₁₂（BNdT）-0.2CoFe ₂ O ₄（CFO）复合多铁陶瓷是通过在850°C下通过火花等离子体烧结（SPS）制成的。烧结后的SPS陶瓷的相对密度达到97.4（±0.3）％。该复合物由纯BNdT和CFO相组成，没有任何优选的c取向。在一个垂直于压力方向的定向倾向更明显。BNdT和CFO的平均晶粒尺寸分别为163和146 nm。BNdT相在100 nm（〜20％）以下有更多的晶粒。超级能量色散X射线分析表明BNdT和CFO之间没有严重反应。拉曼光谱通过加宽谱带和峰位移验证了SPS陶瓷的纳米结构。SPS陶瓷的居里温度下降到560°C，介电损耗稳定。晶界电阻在700°C以上的阻抗中起主要作用。剩余极化强度接近于15.2μC/ cm ²（300 kV / cm），矫顽场较低（-89 / + 95 kV / cm）。