Temperature dependence of the FMR spectra of Fe3O4 and Fe3C nanoparticle magnetic systems in copolymer matrices

• Autorzy: Guskos, N. , Typek, J. , Roslaniec, Z. , Narkiewicz, U. , Kwiatkowska, M. , Maryniak, M.
• Konferencja: Workshop on Functional Materials FMA 2004, Athens, Greece, 23-26 September 2005
• Języki publikacji: EN

Abstrakty

EN

A binary magnetic nanoparticle system, consisting of Fe3O4 (35 wt. %), Fe3C (29 wt. %), and C (36 wt. %) filling in a PTMO-block-PET polymer at low concentration (0.3 %), has been synthesized. X-ray and SEM analyses have been carried out. The temperature dependence of the FMR spectrum of this system has been investigated. At higher temperatures resonance from Fe3O4 nanoparticles dominates the FMR spectrum, while at lower temperatures a more intense line from Fe3C is recorded. The temperature dependence of the FMR spectrum confirms that the nanoparticles of Fe3O4 reach the ordered state faster than Fe3C nanoparticles. In both cases, the spin-glass state is observed below 50 K.

Słowa kluczowe

EN

magnetite; iron carbide; magnetic resonance

• Czasopismo: Materials Science Poland
• Rocznik: 2005
• Tom: Vol. 23, No. 4
• Strony: 1055--1063
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Guskos, N.

autor

Typek, J.

autor

Roslaniec, Z.

autor

Narkiewicz, U.

autor

Kwiatkowska, M.

autor

Maryniak, M.

• 1Institute of Physics, Szczecin University of Technology, al. Piastów 17, 70-310 Szczecin,

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