School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, PR China.
J Colloid Interface Sci. 2011 Feb 1;354(1):413-6. doi: 10.1016/j.jcis.2010.11.020. Epub 2010 Dec 8.
The nanocomposite SrFe(12)O(19)/Ni(0.5)Zn(0.5)Fe(2)O(4) ferrite aligned hollow microfibers with the hollow diameter to the fiber diameter estimated about 3/5 have been prepared by the gel precursor transformation process. The nanocomposite binary ferrites with different mass ratios are formed after the precursor calcined at 900°C for 2h, fabricating from SrFe(12)O(19) nanoparticles and Ni(0.5)Zn(0.5)Fe(2)O(4) nanoparticles with a uniform phase distribution. These nanocomposite ferrite microfibers show a combination of magnetic characteristics for the hard (SrFe(12)O(19)) and soft (Ni(0.5)Zn(0.5)Fe(2)O(4)) phase with an enhanced remanence owing to the exchange-coupling interactions. The aligned microfibers exhibit a shape anisotropy.
通过凝胶前驱体转化法制备了具有约 3/5 的中空直径与纤维直径比的 SrFe(12)O(19)/Ni(0.5)Zn(0.5)Fe(2)O(4)纳米复合铁氧体定向中空微纤维。经过在 900°C 下煅烧 2 小时，前驱体形成了不同质量比的纳米复合双铁氧体，由 SrFe(12)O(19)纳米颗粒和 Ni(0.5)Zn(0.5)Fe(2)O(4)纳米颗粒组成，具有均匀的相分布。这些纳米复合铁氧体微纤维表现出硬（SrFe(12)O(19)）和软（Ni(0.5)Zn(0.5)Fe(2)O(4)）相的磁特性组合，由于交换耦合相互作用，剩磁增强。定向微纤维表现出形状各向异性。
