Magnetic force microscopy and energy loss imaging of superparamagnetic iron oxide nanoparticles

Bruno Torre; Giovanni Bertoni; Despina Fragouli; Andrea Falqui; Marco Salerno; Alberto Diaspro; Roberto Cingolani; Athanassia Athanassiou

doi:10.1038/srep00202

Magnetic force microscopy and energy loss imaging of superparamagnetic iron oxide nanoparticles

Bruno Torre^*, Giovanni Bertoni, Despina Fragouli, Andrea Falqui, Marco Salerno, Alberto Diaspro, Roberto Cingolani, Athanassia Athanassiou

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

We present quantitative, high spatially resolved magnetic force microscopy imaging of samples based on 11 nm diameter superparamagnetic iron oxide nanoparticles in air at room temperature. By a proper combination of the cantilever resonance frequency shift, oscillation amplitude and phase lag we obtain the tip-sample interaction maps in terms of force gradient and energy dissipation. These physical quantities are evaluated in the frame of a tip-particle magnetic interaction model also including the tip oscillation amplitude. Magnetic nanoparticles are characterized both in bare form, after deposition on a flat substrate, and as magnetically assembled fillers in a polymer matrix, in the form of nanowires. The latter approach makes it possible to reveal the magnetic texture in a composite sample independently of the surface topography.

Original language	English (US)
Article number	202
Journal	Scientific Reports
Volume	1
DOIs	https://doi.org/10.1038/srep00202
State	Published - 2011
Externally published	Yes

ASJC Scopus subject areas

General

Access to Document

10.1038/srep00202

Cite this

@article{6ff8756538fa4e0cbe9168b7ed6d3908,

title = "Magnetic force microscopy and energy loss imaging of superparamagnetic iron oxide nanoparticles",

abstract = "We present quantitative, high spatially resolved magnetic force microscopy imaging of samples based on 11 nm diameter superparamagnetic iron oxide nanoparticles in air at room temperature. By a proper combination of the cantilever resonance frequency shift, oscillation amplitude and phase lag we obtain the tip-sample interaction maps in terms of force gradient and energy dissipation. These physical quantities are evaluated in the frame of a tip-particle magnetic interaction model also including the tip oscillation amplitude. Magnetic nanoparticles are characterized both in bare form, after deposition on a flat substrate, and as magnetically assembled fillers in a polymer matrix, in the form of nanowires. The latter approach makes it possible to reveal the magnetic texture in a composite sample independently of the surface topography.",

author = "Bruno Torre and Giovanni Bertoni and Despina Fragouli and Andrea Falqui and Marco Salerno and Alberto Diaspro and Roberto Cingolani and Athanassia Athanassiou",

year = "2011",

doi = "10.1038/srep00202",

language = "English (US)",

volume = "1",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "Nature Publishing Group",

}

TY - JOUR

T1 - Magnetic force microscopy and energy loss imaging of superparamagnetic iron oxide nanoparticles

AU - Torre, Bruno

AU - Bertoni, Giovanni

AU - Fragouli, Despina

AU - Falqui, Andrea

AU - Salerno, Marco

AU - Diaspro, Alberto

AU - Cingolani, Roberto

AU - Athanassiou, Athanassia

PY - 2011

Y1 - 2011

N2 - We present quantitative, high spatially resolved magnetic force microscopy imaging of samples based on 11 nm diameter superparamagnetic iron oxide nanoparticles in air at room temperature. By a proper combination of the cantilever resonance frequency shift, oscillation amplitude and phase lag we obtain the tip-sample interaction maps in terms of force gradient and energy dissipation. These physical quantities are evaluated in the frame of a tip-particle magnetic interaction model also including the tip oscillation amplitude. Magnetic nanoparticles are characterized both in bare form, after deposition on a flat substrate, and as magnetically assembled fillers in a polymer matrix, in the form of nanowires. The latter approach makes it possible to reveal the magnetic texture in a composite sample independently of the surface topography.

AB - We present quantitative, high spatially resolved magnetic force microscopy imaging of samples based on 11 nm diameter superparamagnetic iron oxide nanoparticles in air at room temperature. By a proper combination of the cantilever resonance frequency shift, oscillation amplitude and phase lag we obtain the tip-sample interaction maps in terms of force gradient and energy dissipation. These physical quantities are evaluated in the frame of a tip-particle magnetic interaction model also including the tip oscillation amplitude. Magnetic nanoparticles are characterized both in bare form, after deposition on a flat substrate, and as magnetically assembled fillers in a polymer matrix, in the form of nanowires. The latter approach makes it possible to reveal the magnetic texture in a composite sample independently of the surface topography.

UR - http://www.scopus.com/inward/record.url?scp=84859742673&partnerID=8YFLogxK

U2 - 10.1038/srep00202

DO - 10.1038/srep00202

M3 - Article

C2 - 22355717

AN - SCOPUS:84859742673

SN - 2045-2322

VL - 1

JO - Scientific Reports

JF - Scientific Reports

M1 - 202

ER -

Magnetic force microscopy and energy loss imaging of superparamagnetic iron oxide nanoparticles

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this