Structural and magnetic properties of Co films on highly textured and randomly oriented C-60 layers
- Authors
- Kim, Dong-Ok; Choi, Jun Woo; Lee, Dong Ryeol
- Issue Date
- 1-Mar-2016
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Organic spintronics; Metal-organic interface
- Citation
- JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.401, pp.506 - 510
- Journal Title
- JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
- Volume
- 401
- Start Page
- 506
- End Page
- 510
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/7661
- DOI
- 10.1016/j.jmmm.2015.10.030
- ISSN
- 0304-8853
- Abstract
- The structural and magnetic properties of Co/C-60/pentacene and Co/C-60 thin film structures were investigated. Atomic force microscopy and x-ray reflectivity analysis show that the presence or absence of a pentacene buffer layer leads to a highly textured or randomly oriented C-60 layer, respectively. A Co film deposited on a randomly oriented C-60 layer penetrates into the C-60 layer when it is deposited at a slow deposition rate. The Co penetration can be minimized, regardless of the Co deposition rate, by growth on a highly textured and nanostructured C-60/pentacene layer. Vibrating sample magnetometry measurements show that the saturation magnetization of Co/C-60/pentacene is significantly reduced compared to that of Co/C-60. On the other hand, the Co penetration does not seem to have an effect on the magnetic properties, suggesting that the structural properties of the Co and C-60 layer, rather than the Co penetration into the organic C-60 layer, are critical to the magnetic properties of the Co/C-60. (C) 2015 Elsevier B.V. All rights reserved.
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