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- Title
Hydrogen Annealing Effect on the Magnetic Properties of ZnCoO/MoS<sub>2</sub> Hybrid.
- Authors
Qian, Jun; Wang, Peng; Xu, Yifan; Ye, Shuangli; Sun, Jiang; Wang, Wenzhe; Liao, Lei
- Abstract
The ZnCoO/MoS2 hybrid is successfully synthesized through a general and facile process. High-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectra reveal that the hybrid consists of wurtzite ZnCoO and few layers of MoS2, which shows a paramagnetic property. In contrast, the hybrid presents clear magnetic hysteresis at room temperature with a H2 post-annealing process. No Co metal nanoclusters can be identified by XRD and HRTEM. The red shift of E2g1<inline-graphic></inline-graphic> and A1g peak indicates the strain effect induced by H2 annealing. On the other hand, the disappeared peak at 477 cm−1 can be ascribed to the modification of the interface and surface state of the ZnCoO. Temperature-dependent Raman spectroscopies demonstrate the significant H2 annealing effect on the structural properties of ZnCoO/MoS2 hybrid. The interplay between the electron interaction at the interface and oxygen vacancies of ZnCoO can be responsible for the magnetic properties of the ZnCoO/MoS2 hybrid. The tunable magnetic properties have a promising application in multifunctional MoS2-based semiconductor and spintronic devices.
- Subjects
MAGNETIC materials; SEMICONDUCTORS; NANOCOMPOSITE materials; CRYSTAL structure; TRANSMISSION electron microscopy
- Publication
Journal of Superconductivity & Novel Magnetism, 2018, Vol 31, Issue 4, p1241
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-017-4270-7