期刊
MATERIALS LETTERS
卷 310, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2021.131479
关键词
Nanoparticles; Semiconductor; Ferromagnetism; Grain boundaries; Oxygen vacancies
资金
- National Natural Science Foundation of China [51850410517]
- China Postdoctoral Science Foundation [2018M643612]
- Fundamental Research Funds for the Central Universities
- World-Class Universities (Disciplines) and the Characteristic Development Guidance Funds for the Central Universities
This work reports on the robust ferromagnetism at room temperature in co-precipitation derived rare-earth (Tb) and transition metal (Co) co-doped ZnO nanoparticles. XRD analysis confirms the single-phase character, while morphological studies show the formation of spherical-shaped particles separated by well-defined grain boundaries. The increase in oxygen vacancies is confirmed through photoluminescence spectra. The (Tb, Co) co-doped NPs exhibit room temperature ferromagnetic behavior, which is discussed based on the role of oxygen vacancies and grain boundaries.
This work reports on the robust ferromagnetism at room temperature in co-precipitation derived rare-earth (Tb) and transition metal (Co) co-doped ZnO nanoparticles (NPs). X-ray diffraction (XRD) analysis reveals the singlephase character. Morphological studies confirm the formation of spherical-shaped particles with different orientations separated by well-defined grain boundaries. The increase in oxygen vacancies is confirmed by photoluminescence (PL) spectra. The (Tb, Co) co-doped NPs exhibit room temperature ferromagnetic (RTFM) behavior, which has been discussed based on oxygen vacancies mediated magnetic polarons and the effect of grain boundaries.
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