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- Title
Magnetic Properties of Iron Oxide Nanoparticles Obtained by Laser Evaporation.
- Authors
Novoselova, Iu.; Samatov, O.; Kupriyanova, G.; Murzakaev, A.; Safronov, A.; Kurlyandskaya, G.
- Abstract
The paper concentrates on a synthesis of spherical magnetic particles obtained by laser evaporation under various process conditions. Depending on the process conditions, which include the pressure in a process chamber, laser pulse duration, mean laser power, and the type of power gas, the stoichiometry of the material ranges from Fe O to Fe O , while the average diameter of nanoparticles ranges between 10-23 nm. The nanoparticles have an inverse spinel structure. In terms of the magnetic properties, the samples are a superparamagnetic ensemble. The spherical shape of the majority of nanoparticles as well as the existence of merely one magnetic phase are verified by the characteristics of microwave absorption. A relatively high saturation magnetization and a narrow size distribution of small nanoparticles obtained at 700 mmHg working pressure, 100 ms pulse duration, and 200 W laser power allow the authors to consider these conditions to be the most optimum for the nanopowder synthesis and recommend them for biological applications.
- Subjects
IRON oxide nanoparticles; MAGNETIC properties of nanoparticles; EFFECT of lasers on metals; MAGNETIC particles; NANOPARTICLE synthesis
- Publication
Russian Physics Journal, 2017, Vol 59, Issue 9, p1491
- ISSN
1064-8887
- Publication type
Article
- DOI
10.1007/s11182-017-0935-8