Transformation of carbon onions under high pressure and shear deformation in diamond anvil cell
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Transformation of carbon onions under high pressure and shear deformation in diamond anvil cell
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2012 MRS Spring Meeting MRSS12-1452-FF08-02 Symposium FF 26-Mar-2012 Kirichenko, Aleksey; Technological Institute for Superhard and Novel Carbon Materials, Department of Structural Research Aseev, Andrey; Technological Institute for Superhard and Novel Carbon Materials, Department of Structural Research Denisov, Viktor; Technological Institute for Superhard and Novel Carbon Materials, Department of Structural Research; Institute of Spectroscopy RAS, Department of Solid State Spectroscopy Perezhogin, Igor; Technological Institute for Superhard and Novel Carbon Materials, Department of Structural Research Kulnitskiy, Boris; Technological Institute for Superhard and Novel Carbon Materials, Department of Structural Research Nuzhdin, Anatolyi; Technological Institute for Superhard and Novel Carbon Materials, Department of Structural Research Blank, Vladimir; Technological Institute for Superhard and Novel Carbon Materials, Department of Structural Research nanostructure, scanning electron microscopy (SEM), Raman spectroscopy
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Transformation of carbon onions under high pressure and shear deformation in diamond anvil cell A.N. Kirichenko1, A.K. Aseev1, V.N. Denisov1,2, I. Perezhogin1, B.A. Kulnitskiy1, A.A. Nuzhdin1, V.D. Blank1. 1 FSBI TISNCM, 7а Centralnaya street, Troitsk, Moscow region, 142190, Russian Federation. 2 Institute of spectroscopy RAS, 5 Fizicheskaya street, Troitsk, Moscow region, 142190 Russian Federation. ABSTRACT The carbon onions have been treated in a shear diamond anvil cell under pressure up to 43 GPa and shear deformation up to 2000. The recovered samples have been investigated by the Transmission Electron Microscopy (TEM) and the UV and visible Raman spectroscopy. The carbon onions was stable at pressure up to 30 GPa and 400 shear. Bigger shear deformation at pressures exceeding 30 GPa leads to the amorphous carbon. At 43 GPa shear deformation leads to transformation of onions to DLC. INTRODUCTION Carbon is unique element because of its ability to form the sp, sp2, and sp3-hybridized bonds. The elemental carbon can exist in different phases. Graphite is soft and opaque, while diamond is very hard and transparent. There are a lot of intermediate carbon nanomaterials such as graphene, fullerenes, nanotubes and carbon onions. High-pressure and high-temperature (HPHT) and shear diamond anvil cell (SDAC) treatments of carbon materials are ways to obtain new materials with unique physical properties. Graphite to diamond, fullerene to super hard phase or obtaining of hard nanostructured carbon materials are examples of these treatments [1-8]. There are polyhedral and spherical fullerene- related well structured onions. Polyhedral onions consist of hexagonal carbon rings. Whereas spherical fullerene- related onions obtained in SDAC treatment [2] contain both hexagonal and pentagonal or even
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