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Mediated ferromagnetism in ZnO nanorods with heavily codoped MnFe.
- Source :
-
AIP Advances . May2020, Vol. 10 Issue 5, p1-7. 7p. - Publication Year :
- 2020
-
Abstract
- The ferromagnetic properties are investigated in single crystal ZnO nanorods with heavy codoping of 28 at. % Mn and 1 at. % Fe fabricated by vapor phase transport. The electron energy loss spectroscopy and x-ray photoelectron spectroscopy confirmed that Mn and Fe dopants are, respectively, +2 and +3 valence states, where Raman scattering exhibited additional peaks at 308 cm−1, 458 cm−1, 480 cm−1, 504 cm−1, 516 cm−1, 530 cm−1, and 569 cm−1, associated with MnFe dopants. Compared with undoped and Mn doped ZnO nanostructures, the MnFe-codoped ZnO nanorods are strongly ferromagnetic below Tc of 39 K and around room temperature. The ferromagnetic behavior can be mainly attributed to the carrier-mediated Ruderman–Kittel–Kasuya–Yosida mechanism below Tc and the defect-induced bound magnetic polaron mechanism around room temperature. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 21583226
- Volume :
- 10
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- AIP Advances
- Publication Type :
- Academic Journal
- Accession number :
- 143509393
- Full Text :
- https://doi.org/10.1063/5.0004661