Nickel nanoparticles in carbon structures prepared by solid-phase pyrolysis of nickel-phthalocyanine
- 386 Downloads
By using a modified method of solid-phase pyrolysis of metal-phthalocyanines, we have synthesized ferromagnetic Ni nanoparticles in different carbon structures: amorphous carbon plates, multiwall carbon nanotubes, carbon fibers, and graphitized capsules. The composition, structure and morphology of prepared composite materials have been studied by energy dispersive X-ray microanalysis, scanning and transmission electron microscopy, and X-ray diffraction technique. It has been found that the sizes of nickel nanoparticles (10–500 nm) and the type of carbon structures strongly depend on the pyrolysis conditions. By using the X-band ferromagnetic resonance measurements, we have revealed features of the temperature dependence of resonance spectra of single-domain and multi-domain Ni nanoparticles in Ni/C composites.
KeywordsNickel-phthalocyanine Solid-phase pyrolysis Nickel nanoparticles Carbon nanostructures Magnetic properties
This work was supported by the grants of the International Innovative Nanotechnology Center (ININC) CIS No.10881, ANSEF No. PS-CONDMATEX-1199 and Republic of Armenia No. 65. We are grateful to T. K. Khachatryan for assistance in the measurements.
- Gusev AI (2009) Nanomaterials, nanostructures, nanotechnologies. Fizmatlit, MoscowGoogle Scholar
- Mirzakhanyan AA, Manukyan AS, Badalyan GR, Khachatryan TK, Maslova OA, Yuzyuk YI, Bugaev LA, Sharoyan EG (2010) Raman spectra of nickel–carbon nanocomposites. Proc SPIE 7998:79981B-1–79981B-4Google Scholar
- Petrov YI (1986) Clusters and fine particles. Nauka, MoscowGoogle Scholar
- Sharoyan VE, Harutyunyan AR (1993) Production of small cobalt particles. J Contemp Phys 28:28–32Google Scholar
- Sharoyan EG, Manukyan AS, Mirzakhanyan AA, Badalyan GR, Aghababyan EA, Harutyunyan NP (2009a) Preparation and characterization of Ni–Cu magnetic nanoparticles in pyrolytic carbon. In: Proceedings of the 7th international conference semiconductor micro- and nanoelectronics. Tsakhcadzor, Armenia, pp 195–198Google Scholar
- Sharoyan EG, Manukyan AS, Mirzakhanyan AA, Badalyan GR, Maloyan HG, Zakharyan RV, Nurijanyan MKh and Asatryan HR (2009b) Preparation and magnetic properties of carbon-coated Ni–Cu nanoalloys for self-regulating hyperthermia. In: Proceedings of the conference laser physics–2008. Ashtarak, Armenia, pp 9–12Google Scholar
- Shulepov SV (1972) Physics of carbon–graphite materials. Metallurgiya, MoscowGoogle Scholar
- Zhang XF, Dong XL, Hwang H, Liu YY, Wang WN, Zhu XG, Lv B, Lei JP (2006) Microwave absorbtion properties of the carbon-coated nickel nanoparticles. Appl Phys Lett 89:053115-1–053115-3Google Scholar
- Zhi L, Kolb U, Mullen K (2006) Novel carbon nanostructures prepared by solid-state pyrolysis of iron phthalocyanine. New Carbon Mater 21:109–113Google Scholar