摘要
以α－Fe2O3、ZnO及NiO粉体为原料，在高能球磨的作用下，通过机械化学反应合成了Ni－Zn铁氧体纳米晶．用XRD、TEM及Mossbauer谱学方法对样品进行了表征．结果表明，球磨所得纳米晶的晶粒尺寸为5～20nm，表现为超顺磁性．经800℃热处理后，晶粒长大到约50nm；表现为亚铁磁性．
Nanocrystalline Ni-Zn ferrite was synthesized by mechanochemical reaction from α-Fe2O3,ZnO and NiO powders through high energy ball milling. The synthesized samples were characterized by XRD, TEM and Mossbauer spectroscopy. The results showed that the as-millednanocrystalline size was about 5~20 um, which exhibited superparamagnetism, and the size ofthe nanocrystallite after annealed at 800℃ for 2h increased to about 50 um, which exhibitedferrimagnetism.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第3期415-418,共4页
Journal of Inorganic Materials
关键词
机械化学合成
纳米晶
铁氧体
软磁材料
mechanochemical synthesis, nanocrystalline, Ni-Zn ferrite
