TY - JOUR
T1 - Dipolar interactions in two- and three-dimensional magnetic nanoparticle arrays
AU - Poddar, Pankaj
AU - Telem-Shafir, Tamar
AU - Fried, Tcipi
AU - Markovich, Gil
PY - 2002/8/1
Y1 - 2002/8/1
N2 - Uniform, organically functionalized, 8.5-nm-diameter nanocrystals of Fe3O4 were synthesized and assembled into close-packed monolayer as well as multilayer arrays using the Langmuir-Blodgett technique. The ac and dc magnetic susceptibility measurements on arrays in comparison with isolated particles indicate strong dipolar interactions and a spin-glass-like slowing down of relaxation times. Differences in magnetic characteristics between monolayer to multilayer arrays were observed, such as larger remanent magnetization and a higher blocking temperature in the two-dimensional system.
AB - Uniform, organically functionalized, 8.5-nm-diameter nanocrystals of Fe3O4 were synthesized and assembled into close-packed monolayer as well as multilayer arrays using the Langmuir-Blodgett technique. The ac and dc magnetic susceptibility measurements on arrays in comparison with isolated particles indicate strong dipolar interactions and a spin-glass-like slowing down of relaxation times. Differences in magnetic characteristics between monolayer to multilayer arrays were observed, such as larger remanent magnetization and a higher blocking temperature in the two-dimensional system.
UR - http://www.scopus.com/inward/record.url?scp=0036696526&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.66.060403
DO - 10.1103/PhysRevB.66.060403
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:0036696526
SN - 0163-1829
VL - 66
SP - 604031
EP - 604034
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 6
M1 - 060403
ER -