Structural determination and magnetic properties for Co-rubrene composite films on Si(1 0 0)

Yong Jhih Hou, Cheng Hsun Tony Chang, Chun Kai Yang, Chih Yu Hsu, Yen Wei Jhou, Jyh-Shen Tsay

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Because of the potential uses toward low-cost and flexible-substrate-based electronics, semiconducting organic materials have attracted much attention. In this contribution, structures and magnetic properties of Co-rubrene composite films on Si(1 0 0) have been studied by employing atomic force microscopy (AFM) and magneto-optic Kerr effect techniques. For composite films prepared by co-depositions of Co and rubrene on Si(1 0 0), the surface is smooth while a layered distribution of Co atoms is detected. For thick composite films, surfactant effects of rubrene molecules cause smooth surfaces and reduced interaction at the film/Si interface. For thin composite films, the formation of separated Co clusters in the films results in a larger coercive force due to the imperfection introduced by rough interface to impede the magnetization reversal. By increasing the rubrene concentration, more Co/rubrene interfaces are introduced in the composite films and the more rubrene served as a surfactant enhances the quality of the films. These information are valuable for future applications combining organic semiconductor and spintronics.

Original languageEnglish
Pages (from-to)139-143
Number of pages5
JournalApplied Surface Science
Volume354
DOIs
Publication statusPublished - 2015 Nov 1

Fingerprint

Composite films
Magnetic properties
Surface-Active Agents
Surface active agents
Magnetization reversal
Magnetoelectronics
Magnetooptical effects
Semiconducting organic compounds
Coercive force
Thick films
Atomic force microscopy
Electronic equipment
rubrene
Thin films
Atoms
Defects
Molecules
Substrates
Costs

Keywords

  • Atomic force microscopy
  • Cobalt
  • Magneto-optic Kerr effect
  • Magnetron sputtering
  • Rubrene

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Cite this

Structural determination and magnetic properties for Co-rubrene composite films on Si(1 0 0). / Hou, Yong Jhih; Chang, Cheng Hsun Tony; Yang, Chun Kai; Hsu, Chih Yu; Jhou, Yen Wei; Tsay, Jyh-Shen.

In: Applied Surface Science, Vol. 354, 01.11.2015, p. 139-143.

Research output: Contribution to journalArticle

Hou, Yong Jhih ; Chang, Cheng Hsun Tony ; Yang, Chun Kai ; Hsu, Chih Yu ; Jhou, Yen Wei ; Tsay, Jyh-Shen. / Structural determination and magnetic properties for Co-rubrene composite films on Si(1 0 0). In: Applied Surface Science. 2015 ; Vol. 354. pp. 139-143.
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