Carbon-Coated Nickel Nanoparticles: Effect on the Magnetic and Electric Properties of Composite Materials

Coatings

Olga Shenderova¹  Clara Silvestre²  Artyom Plyushch³  Jūras Banys³  Jan Macutkevič³  AnatolyYe. Yermakov⁴  MikhailA. Uimin⁴  Polina Kuzhir⁵  Alexander Petrov⁶  Nikolay Kalanda⁶ 

[1] Adamas Nanotechnology Inc, 8100 Brownleigh Dr, Raleigh, NC 27617, USA;Consiglio Istituto per i Polimeri, Compositi e Biomaterialii, Via Campi Flegrei 34, 80078 Pozzuoli, Italy;Faculty of Physics, Vilnius University, Sauletekio 9, Vilnius LT-10222, Lithuania;M.N. Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, Yekaterinburg 620137, Russia;Research Institute for Nuclear Problems of Belarusian State University, Bobruiskaya Str., 11, Minsk 220030, Belarus;Scientific-Practical Materials Research Centre of the National Academy of Sciences of Belarus, P. Brovka Str. 19, Minsk 220072, Belarus;

关键词: composite materials;    dielectric properties;    magnetic properties;    glass transition;    superparamagnetic particles;   

DOI  :  10.3390/coatings8050165

来源: DOAJ

【 摘 要 】

Nickel nanoparticles coated with few layers of carbon have been embedded into the polydimethylsiloxane (PDMS) matrix in concentrations up to 11 vol %. Dielectric and magnetic properties of composite materials have been studied in wide frequency (20 Hz–1 MHz) and temperature (130–430 K) ranges. It was demonstrated that the temperature behavior of dielectric properties is determined by glass transitions in the PDSM matrix below 200 K and the Maxwell–Wagner relaxation above room temperature. The possibility of using fabricated composites on the basis of the PDMS matrix for producing a wide range of passive electromagnetic components, such as frequency-selective filters, wide-band detectors/sensors of a bolometric type, and even electromagnetic “black holes” is also discussed.

【 授权许可】

Unknown