Journal
NANO LETTERS
Volume 21, Issue 22, Pages 9780-9788Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.1c03767
Keywords
plasmonics; magnetic; spinel; ferrites; atomic-doping; MCD
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Funding
- EPSRC [EP/R008841/1]
- Department of Economy, Northern Ireland under GCRF Pump Priming Fund
- Gurujal [176]
- Ministry of Electronics and Information Technology (MeitY) under Technology Incubation and Development of Entrepreneurs (TIDE 2.0) program
- nanoLatticeX
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Adding minute impurities can adjust the magnetic and optical properties of ferrites without affecting their band gap and work function. This is important for applications such as nanobiosensing, nanoparticle-based catalysis, and renewable energy generation using nanotechnology.
Tuning optical or magnetic properties of nanoparticles, by addition of impurities, for specific applications is usually achieved at the cost of band gap and work function reduction. Additionally, conventional strategies to develop nanoparticles with a large band gap also encounter problems of phase separation and poor crystallinity at high alloying degree. Addressing the aforementioned trade-offs, here we report Ni-Zn nanoferrites with energy band gap (E-g) of approximate to 3.20 eV and a work function of approximate to 5.88 eV. While changes in the magnetoplasmonic properties of the Ni-Zn ferrite were successfully achieved with the incorporation of bismuth ions at different concentrations, there was no alteration of the band gap and work function in the developed Ni-Zn ferrite. This suggests that with the addition of minute impurities to ferrites, independent of their changes in the band gap and work function, one can tune their magnetic and optical properties, which is desired in a wide range of applications such as nanobiosensing, nanoparticle based catalysis, and renewable energy generation using nanotechnology.
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