Magnetic properties of γ-Fe2O3/poly(ether-ester) nanocomposites

被引：25

作者：

Guskos, N. ^{[1
]}

Likodimos, V. ^{[1
]}

Glenis, S. ^{[1
]}

Maryniak, M. ^{[2
]}

Baran, M. ^{[3
]}

Szymczak, R. ^{[3
]}

Roslaniec, Z. ^{[4
]}

Watkowska, M. ^{[4
]}

Petridis, D. ^{[5
]}

机构：

[1] Univ Athens, Dept Phys, Sect Solid State Phys, Athens 15784, Greece

[2] Tech Univ Szczecin, Inst Phys, PL-70310 Szczecin, Poland

[3] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

[4] Tech Univ Szczecin, Inst Mat Sci & Engn, PL-70310 Szczecin, Poland

[5] NCSR Demokritos, Inst Mat Sci, Athens 15310, Greece

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2008年 / 8卷 / 04期

关键词：

ferromagnetic resonance; electromagnetic shielding; poly(ether-ester);

D O I：

10.1166/jnn.2008.063

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The magnetic properties of gamma-Fe2O3 nanoparticles embedded in a thermoplastic elastomer poly(ether-ester) copolymer by the in situ polycondensation reaction process have been investigated by means of magnetization and ferromagnetic resonance (FMR) measurements at low filler concentrations of 0.1 and 0.3 wt% with the magnetic additive introduced in the polymer matrix in powder and solution form. The magnetic behavior of the magnetopolymeric nanocomposites indicates significant interparticle interaction effects that depend mainly on the dispersion state of the magnetic nanoparticles as well as their concentration, consistent with the variation of the particle microstructure characterized by magnetic aggregates in the nanometer and micron scale for the solution and powder dispersions, respectively. The magnetization and FMR results at different filler concentrations and dispersions show a close correspondence to the relaxation processes of the copolymer, implying the coupling of polymeric and magnetic properties.

引用

页码：2127 / 2134

页数：8

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