Nanoparticle sizing: a comparative study using atomic force microscopy, transmission electron microscopy, and ferromagnetic resonance

Atomic force microscopy (AFM), transmission electron microscopy (TEM), and ferromagnetic resonance (FMR) were used to unfold the nanoparticle size of a ferrofluid sample. Compared to TEM, the AFM method showed a nanoparticle diameter ( D m) reduction of 20% and standard deviation ( σ) increase of 15...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2001, Vol.225 (1), p.79-83
Main Authors: Lacava, L.M., Lacava, B.M., Azevedo, R.B., Lacava, Z.G.M., Buske, N., Tronconi, A.L., Morais, P.C.
Format: Article
Language:English
Subjects:
Analytical biochemistry: general aspects, technics, instrumentation
Analytical, structural and metabolic biochemistry
Atomic force microscopy
Biological and medical sciences
Chemistry
Colloidal state and disperse state
Exact sciences and technology
Ferrofluids
Ferromagnetic resonance
Fundamental and applied biological sciences. Psychology
General and physical chemistry
Particle–size distribution
Physical and chemical studies. Granulometry. Electrokinetic phenomena
Transmission electron microscopy
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Summary:Atomic force microscopy (AFM), transmission electron microscopy (TEM), and ferromagnetic resonance (FMR) were used to unfold the nanoparticle size of a ferrofluid sample. Compared to TEM, the AFM method showed a nanoparticle diameter ( D m) reduction of 20% and standard deviation ( σ) increase of 15%. The differences in D m and σ were associated with the AFM tip and the nanoparticle concentration on the substrate.
ISSN:0304-8853
DOI:10.1016/S0304-8853(00)01231-2