I. Zalite, G. Heidemane, A. Krumina, D. Rašmane, M. Maiorov
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引用次数: 7
摘要
摘要采用溶胶-凝胶自蔓延燃烧法制备了Co1−xZnxFe2O4和Ni1−xZnxFe2O4 (0 < x < 1)纳米颗粒固溶体。所得的单立方相产物比表面积为25 ~ 33 m2∙g−1，晶粒尺寸为25 ~ 40 nm。晶格参数从8.371 A (CoFe2O4)和8.337 A (NiFe2O4)到8.431 A (ZnFe2O4)呈线性变化。饱和磁化强度(Ms)从60.8 emu∙g−1 (CoFe2O4)非线性变化，从35.6 emu∙g−1 (NiFe2O4)到3.3 emu∙g−1 (ZnFe2O4)分别达到最大值:Co0.8Zn0.2Fe2O4为76.1 emu∙g−1,Ni0.6Zn0.4Fe2O4为64.9 emu∙g−1 -。
ZnFe2O4 Containing Nanoparticles: Synthesis and Magnetic Properties
Abstract Solid solutions of Co1−xZnxFe2O4 and Ni1−xZnxFe2O4 (0 < x < 1) nanoparticles were synthesized by sol-gel self-propagating combustion method. The obtained single cubic phase product has a specific surface area 25 m2∙g−1 to 33 m2∙g−1 and crystallite size 25 nm to 40 nm. Lattice parameters change linearly from 8.371 A (CoFe2O4) and 8.337 A (NiFe2O4) to 8.431 A (ZnFe2O4). The saturation magnetization (Ms) changes non-linearly from 60.8 emu∙g−1 (CoFe2O4), respectively, from 35.6 emu∙g−1 (NiFe2O4) to 3.3 emu∙g−1 (ZnFe2O4) reaching maximal value 76.1 emu∙g−1 for Co0.8Zn0.2Fe2O4 and 64.9 emu∙g−1 – for Ni0.6Zn0.4Fe2O4.
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