One-step synthesis of composite materials based on polytetrafluoroethylene microgranules and Co@Fe2O3-FeF2 nanoparticles

Yurkov Gleb Yu; Kozinkin Alexander V; Shvachko Oleg VKubrin Stanislav P.Ovchenkov Evgeny A.Korobov Maxim S.Kirillov Vladislav E.Osipkov Alexey S.Makeev Mstislav O.Ryzhenko Dmitry S.Solodilov Vitaly IBurakova Elena A.Bouznik Vyacheslav M.

首页> 外文期刊>Journal of Applied Polymer Science >One-step synthesis of composite materials based on polytetrafluoroethylene microgranules and Co@Fe2O3-FeF2 nanoparticles

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One-step synthesis of composite materials based on polytetrafluoroethylene microgranules and Co@Fe2O3-FeF2 nanoparticles

机译：One-step synthesis of composite materials based on polytetrafluoroethylene microgranules and Co@Fe2O3-FeF2 nanoparticles

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This paper investigates the structure and magnetic characteristics of Co@Fe2O3-FeF2 nanoparticles localized on the surface of polytetrafluoroethylene microgranules. It is the first time that nanocomposite materials of this composition were obtained. The average size of the nanoparticles was established by transmission electron microscopy and amounted to 10.9 nm. According to the data of energy dispersive analysis, Mossbauer spectroscopy, X-ray emission spectroscopy, and EXAFS, it was found that the particles consist of a metallic cobalt core surrounded by a surface shell of Fe2O3 and FeF2, due to the oxidation of surface iron atoms and their interaction with the polymer matrix, respectively. The studies of magnetic properties showed that the material has blocking temperature of 200 K and residual magnetization in the temperature range from 4.2 to 300 K.

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《Journal of Applied Polymer Science》 |2022年第38期|共9页
作者
Yurkov Gleb Yu; Kozinkin Alexander V; Shvachko Oleg VKubrin Stanislav P.Ovchenkov Evgeny A.Korobov Maxim S.Kirillov Vladislav E.Osipkov Alexey S.Makeev Mstislav O.Ryzhenko Dmitry S.Solodilov Vitaly IBurakova Elena A.Bouznik Vyacheslav M.;
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作者单位

Russian Acad Sci;

Southern Fed Univ;

Moscow MV Lomonosov State UnivBauman Moscow State Tech UnivTambov State Tech Univ;

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正文语种英语
中图分类高分子化合物工业（高聚物工业）;
关键词
composites; magnetism and magnetic properties; nanocrystals; nanoparticles; nanowires; nanostructured polymers; CORE-SHELL NANOPARTICLES; IRON-CONTAINING CLUSTERS; SURFACE; POLY(TETRAFLUOROETHYLENE); MATRIX;

One-step synthesis of composite materials based on polytetrafluoroethylene microgranules and Co@Fe2O3-FeF2 nanoparticles

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