Morphologies and magnetism of AxB1-xFe2O4self-assembled nanospheres

Authors：Ma Jie^*; Chen Bingkun; Yan Luliang; Sun Mengya

Source：Materials Research Bulletin, 2018, 102: 137.

DOI：10.1016/j.materresbull.2018.02.031

• Average diameter
• Grain size
• One pot
• SEM and TEM
• Solvothermal
• Solvothermal method
• Spinel structure

A series of AxB1-xFe2O4(x = 0.05–0.50) (A, B as Zn2+, Ni2+, Co2+) micro-nanospheres were prepared using a facile one-pot solvothermal method. All products are spinel structures with grain sizes of around 11–15 nm as characterised by using XRD. SEM and TEM images show that NixZn1-xFe2O4(x = 0.05–0.50) are microspheres self-assembled by nanoparticles with an average diameter of 200–300 nm, but the sizes of NixCo1-xFeO4(x = 0.10–0.50) and ZnxCo1-xFe2O4(x = 0.10–0.50) micro-nanospheres increase from 20 nm to 200 nm with increasing amounts of Ni2+and Zn2+. As-prepared AxB1-xFe2O4samples are paramagnetic materials with coercivities of no more than 177.5 Oe. The morphologies and magnetism of AxB1-xFe2O4could be adjusted by changing the amount of A2+and B2+.