Multiferroic composite materials have attracted a lot of attention for their excellent ferroelectric and ferromagnetic properties. For the first time one-dimensional core-shell structure of CoFe₂O₄/Ba(Zr_0.2Ti_0.8)O₃–0.5(Ba_0.7Ca_0.3)TiO₃ (CFO@BZCT) multiferroic composite was synthesized by electrospinning. The effect of electrospinning routes on the composite fibers properties was investigated. To do so, two different routes were utilized: the electrospinning of core and shell solutions using coaxial nozzle and the electrospinning of BZCT solution containing CFO fibers (with three different concentrations of 2, 4 and 8 g/100 ml solution). The fiber morphology was maintained for all samples in calcination temperatures up to 900 °C. Spinel cobalt ferrite and perovskite BZT-0.5BCT phases were crystallized for calcined composites. The nano and core-shell structure of composites were confirmed by the TEM analysis. Magnetoelectric coupling of CFO and BZCT phases was investigated by the temperature-dependent SQUID measurement, where a ferroelectric phase transformation at 100 °C induced magnetization changes. Low saturation magnetization and dielectric constant of 6.7 emu/g and 300 ± 10 were obtained for the sample synthesized by the first method while these values rose to 36.8 emu/g and 400 ± 30 respectively for the second method. A comparison of the two methods exhibited a larger fiber diameter, porous fibers and lower ferroic properties for the sample synthesized by the first method.

多铁性复合材料以其出色的铁电和铁磁特性而吸引了很多关注。CoFe ₂ O ₄ / Ba（Zr _0.2 Ti _0.8）O ₃ –0.5（Ba _0.7 Ca _0.3）TiO _3的一维核-壳结构通过电纺合成了（CFO @ BZCT）多铁性复合材料。研究了电纺丝路线对复合纤维性能的影响。为此，采用了两种不同的途径：使用同轴喷嘴对核和壳溶液进行静电纺丝，以及对含有CFO纤维的BZCT溶液（三种浓度分别为2、4和8 g / 100 ml溶液）进行静电纺丝。在最高900°C的煅烧温度下，所有样品的纤维形态得以保持。尖晶石钴铁氧体和钙钛​​矿BZT-0.5BCT相被结晶，以煅烧复合材料。通过TEM分析证实了复合材料的纳米和核-壳结构。通过温度依赖性SQUID测量研究了CFO和BZCT相的磁电耦合，其中在100°C的铁电相变会引起磁化强度的变化。通过第一种方法合成的样品的低饱和磁化强度和介电常数分别为6.7 emu / g和300±10，而对于第二种方法，这些值分别上升至36.8 emu / g和400±30。两种方法的比较显示，通过第一种方法合成的样品具有较大的纤维直径，多孔纤维和较低的铁性性质。