Fabrication Of Buried Self-Organized Stripes In The Ni/C60 Composite

0368935 - ÚJF 2012 RIV US eng J - Journal Article
Vacík, Jiří - Lavrentiev, Vasyl - Horák, Pavel - Narumi, K.
Fabrication Of Buried Self-Organized Stripes In The Ni/C60 Composite.
AIP Conference Proceedings. Roč. 1336, č. 1 (2011), s. 299-302. ISSN 1551-7616
R&D Projects: GA AV ČR(CZ) KAN400480701; GA AV ČR(CZ) IAA400320901; GA ČR GA106/09/1264; GA MŠMT(CZ) LC06041
Institutional research plan: CEZ:AV0Z10480505
Keywords : Nickel * Fullerenes * Composite materials * Self-organization
Subject RIV: JJ - Other Materials

A periodic array of striped nanoscopic domains, embedded in the epitaxially grown Ni layer, was formed after thermal annealing of the Ni/Ni+C60/C60/Ni thin multilayer sequence deposited on the MgO(001) monocrystal. The composite was annealed in 100 °C/1 hr increments in the range of 200–600 °C, and the structural evolution of the composite was analyzed mainly by Rutherford Backscattering and Scanning Electron Microscopy. The periodic system of the stripes was revealed after annealing at 600 °C. The possible mechanism of the domain formation is suggested as follows: temperatures below 500 °C incite diffusion (and consecutive disintegration) of the C60 molecules; temperatures above 500 °C induce forceful intermixing of the upper Ni/Ni+C60/C60 layers; due to the pronounced immiscibility of the Ni and C (C60) components the process of the phase separation is triggered.
Permanent Link: http://hdl.handle.net/11104/0203136