caa a22 4500 46792550X CHVBK 20180406152928.0 cr unu---uuuuu 170328e20060101xx s 000 0 eng 10.1134/S0020168506010055 doi (NATIONALLICENCE)springer-10.1134/S0020168506010055 Thermal stability of graphite-Cobalt nanocomposite materials [Elektronische Daten] [L. Vovchenko, L. Matzui, N. Zakharenko, L. Kapitanchuk, A. Brusilovets] Graphite-Co composites produced by intercalating potassium into graphite to give C8K, followed by reaction with CoCl2 and reduction of Co were characterized by x-ray diffraction, scanning electron microscopy, Auger electron spectroscopy, and secondary ion mass spectrometry. The results indicate that the Co in the composites is present both between graphite layers, in the form of atomically dispersed metal (intercalated into graphite), and on the surface of the graphite support, in the form of nanoparticles. Heat treatment of the nanocomposites in several steps increases the amount of cobalt on the graphite surface relative to that between the graphite layers owing to the outdiffusion of cobalt atoms from the interlayer spaces. Heating markedly increases the magnetic susceptibility of the graphite-Co composites, also by virtue of the Co diffusion to the surface of the graphite particles and the formation of Co agglomerates. Pleiades Publishing, Inc., 2006 Vovchenko L. Shevchenko National University, Vladimirskaya ul. 64, 03033, Kiev, Ukraine aut Matzui L. Shevchenko National University, Vladimirskaya ul. 64, 03033, Kiev, Ukraine aut Zakharenko N. Shevchenko National University, Vladimirskaya ul. 64, 03033, Kiev, Ukraine aut Kapitanchuk L. Shevchenko National University, Vladimirskaya ul. 64, 03033, Kiev, Ukraine aut Brusilovets A. Shevchenko National University, Vladimirskaya ul. 64, 03033, Kiev, Ukraine aut Inorganic Materials Nauka/Interperiodica 42/1(2006-01-01), 19-23 0020-1685 42:1<19 2006 42 10789 https://doi.org/10.1134/S0020168506010055 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0020168506010055 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vovchenko L. Shevchenko National University, Vladimirskaya ul. 64, 03033, Kiev, Ukraine aut NATIONALLICENCE 700 1- Matzui L. Shevchenko National University, Vladimirskaya ul. 64, 03033, Kiev, Ukraine aut NATIONALLICENCE 700 1- Zakharenko N. Shevchenko National University, Vladimirskaya ul. 64, 03033, Kiev, Ukraine aut NATIONALLICENCE 700 1- Kapitanchuk L. Shevchenko National University, Vladimirskaya ul. 64, 03033, Kiev, Ukraine aut NATIONALLICENCE 700 1- Brusilovets A. Shevchenko National University, Vladimirskaya ul. 64, 03033, Kiev, Ukraine aut NATIONALLICENCE 773 0- Inorganic Materials Nauka/Interperiodica 42/1(2006-01-01), 19-23 0020-1685 42:1<19 2006 42 10789 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer