Figure 2.
a
,
b
SEM image,
c
EDX spectrum from
a
, and
d
TEM image of the as-synthesized Fe
3
O
4
/SiO
2
nanoparticles
Xiao and Xiao
Nanoscale Research Letters
2009
4
:1078 doi:10.1007/s11671-009-9356-0