Doping Independent Work Function and Stable Band Gap of Spinel Ferrites with Tunable Plasmonic and Magnetic Properties

Nikhil Bhalla; Shilpa Taneja; Preeti Thakur; Preetam Kumar Sharma; Davide Mariotti; Chiranjeevi Maddi; Oxana Ivanova; Dmitry Petrov; Alexander Sukhachev; Irina S Edelman; Atul Thakur

doi:10.1021/acs.nanolett.1c03767

Doping Independent Work Function and Stable Band Gap of Spinel Ferrites with Tunable Plasmonic and Magnetic Properties

Nikhil Bhalla, Shilpa Taneja, Preeti Thakur, Preetam Kumar Sharma, Davide Mariotti, Chiranjeevi Maddi, Oxana Ivanova, Dmitry Petrov, Alexander Sukhachev, Irina S Edelman, Atul Thakur

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35 Citations (Scopus)

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Abstract

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 (Eg) of ≈3.20 eV and a work function of ≈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.

Original language	English
Pages (from-to)	9780-9788
Number of pages	9
Journal	Nano Letters
Volume	21
Issue number	22
Early online date	4 Nov 2021
DOIs	https://doi.org/10.1021/acs.nanolett.1c03767
Publication status	Published (in print/issue) - 24 Nov 2021

Bibliographical note

Funding Information:
All authors would like to acknowledge support from EPSRC fund, award no. EP/R008841/1. Nikhil Bhalla wishes to thank Department of Economy, Northern Ireland, for supporting part of this work under GCRF Pump Priming Fund. Additionally, Atul Thakur and Preeti Thakur would like to acknowledge Gurujal, an initiative with district administration Gurugram for financial assistance from project no.176, Amity Incubation grant from the Ministry of Electronics and Information Technology (MeitY) under Technology Incubation and Development of Entrepreneurs (TIDE 2.0) program and the startup nanoLatticeX.

Publisher Copyright:
©

Keywords

spinel
MCD
ferrites
magnetic
plasmonics
atomic-doping

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/acs.nanolett.1c03767Licence: CC BY

acs.nanolett.1c03767Final published version, 5.85 MBLicence: CC BY

Cite this

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title = "Doping Independent Work Function and Stable Band Gap of Spinel Ferrites with Tunable Plasmonic and Magnetic Properties",

abstract = "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 (Eg) of ≈3.20 eV and a work function of ≈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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author = "Nikhil Bhalla and Shilpa Taneja and Preeti Thakur and Sharma, {Preetam Kumar} and Davide Mariotti and Chiranjeevi Maddi and Oxana Ivanova and Dmitry Petrov and Alexander Sukhachev and Edelman, {Irina S} and Atul Thakur",

note = "Funding Information: All authors would like to acknowledge support from EPSRC fund, award no. EP/R008841/1. Nikhil Bhalla wishes to thank Department of Economy, Northern Ireland, for supporting part of this work under GCRF Pump Priming Fund. Additionally, Atul Thakur and Preeti Thakur would like to acknowledge Gurujal, an initiative with district administration Gurugram for financial assistance from project no.176, Amity Incubation grant from the Ministry of Electronics and Information Technology (MeitY) under Technology Incubation and Development of Entrepreneurs (TIDE 2.0) program and the startup nanoLatticeX. Publisher Copyright: {\textcopyright}",

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T1 - Doping Independent Work Function and Stable Band Gap of Spinel Ferrites with Tunable Plasmonic and Magnetic Properties

AU - Bhalla, Nikhil

AU - Taneja, Shilpa

AU - Thakur, Preeti

AU - Sharma, Preetam Kumar

AU - Mariotti, Davide

AU - Maddi, Chiranjeevi

AU - Ivanova, Oxana

AU - Petrov, Dmitry

AU - Sukhachev, Alexander

AU - Edelman, Irina S

AU - Thakur, Atul

N1 - Funding Information: All authors would like to acknowledge support from EPSRC fund, award no. EP/R008841/1. Nikhil Bhalla wishes to thank Department of Economy, Northern Ireland, for supporting part of this work under GCRF Pump Priming Fund. Additionally, Atul Thakur and Preeti Thakur would like to acknowledge Gurujal, an initiative with district administration Gurugram for financial assistance from project no.176, Amity Incubation grant from the Ministry of Electronics and Information Technology (MeitY) under Technology Incubation and Development of Entrepreneurs (TIDE 2.0) program and the startup nanoLatticeX. Publisher Copyright: ©

PY - 2021/11/24

Y1 - 2021/11/24

N2 - 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 (Eg) of ≈3.20 eV and a work function of ≈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.

AB - 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 (Eg) of ≈3.20 eV and a work function of ≈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.

KW - spinel

KW - MCD

KW - ferrites

KW - magnetic

KW - plasmonics

KW - atomic-doping

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U2 - 10.1021/acs.nanolett.1c03767

DO - 10.1021/acs.nanolett.1c03767

M3 - Letter

C2 - 34735771

SN - 1530-6984

VL - 21

SP - 9780

EP - 9788

JO - Nano Letters

JF - Nano Letters

IS - 22

ER -

Doping Independent Work Function and Stable Band Gap of Spinel Ferrites with Tunable Plasmonic and Magnetic Properties

Abstract

Bibliographical note

Keywords

UN SDGs

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