Ni-Doped SnO2 Dilute Magnetic Semiconductors: Morphological Characteristics and Optical and Magnetic Properties

Feng Jiang; Lizhi Peng; Tianfu Liu

doi:10.1007/s10948-020-05533-y

Ni-Doped SnO₂ Dilute Magnetic Semiconductors: Morphological Characteristics and Optical and Magnetic Properties

Feng Jiang, Lizhi Peng, Tianfu Liu^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Ni-doped SnO₂ dilute magnetic semiconductors were prepared by precipitation method. The obtained spherical nanoparticles are pure tetragonal rutile phase, and Ni ions promote the growth of SnO₂ nanoparticles. The optical band gap energy of the SnO₂ nanoparticles decreases from 3.14 to 2.84 eV when input x% Ni. The room-temperature photoluminescence (PL) spectra and X-ray photoelectron spectroscopy (XPS) confirm the existence of surface oxygen vacancies caused by the large specific surface area and the introduction of Ni ions. All the synthesized Ni-doped SnO₂ nanoparticles achieve room-temperature ferromagnetism, with a saturation magnetization of up to 2.95 × 10⁻³ emu/g at a dopant concentration of 2%. The interaction between oxygen vacancies and Ni²⁺ realizes the magnetic transition of nanoparticles from diamagnetic to ferromagnetic.

Original language	English
Pages (from-to)	3051-3058
Number of pages	8
Journal	Journal of Superconductivity and Novel Magnetism
Volume	33
Issue number	10
DOIs	https://doi.org/10.1007/s10948-020-05533-y
Publication status	Published - 1 Oct 2020

Keywords

Magnetic property
Morphology
Optical property
SnO nanoparticle

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10.1007/s10948-020-05533-y

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abstract = "Ni-doped SnO2 dilute magnetic semiconductors were prepared by precipitation method. The obtained spherical nanoparticles are pure tetragonal rutile phase, and Ni ions promote the growth of SnO2 nanoparticles. The optical band gap energy of the SnO2 nanoparticles decreases from 3.14 to 2.84 eV when input x% Ni. The room-temperature photoluminescence (PL) spectra and X-ray photoelectron spectroscopy (XPS) confirm the existence of surface oxygen vacancies caused by the large specific surface area and the introduction of Ni ions. All the synthesized Ni-doped SnO2 nanoparticles achieve room-temperature ferromagnetism, with a saturation magnetization of up to 2.95 × 10−3 emu/g at a dopant concentration of 2%. The interaction between oxygen vacancies and Ni2+ realizes the magnetic transition of nanoparticles from diamagnetic to ferromagnetic.",

keywords = "Magnetic property, Morphology, Optical property, SnO nanoparticle",

author = "Feng Jiang and Lizhi Peng and Tianfu Liu",

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T2 - Morphological Characteristics and Optical and Magnetic Properties

AU - Jiang, Feng

AU - Peng, Lizhi

AU - Liu, Tianfu

PY - 2020/10/1

Y1 - 2020/10/1

N2 - Ni-doped SnO2 dilute magnetic semiconductors were prepared by precipitation method. The obtained spherical nanoparticles are pure tetragonal rutile phase, and Ni ions promote the growth of SnO2 nanoparticles. The optical band gap energy of the SnO2 nanoparticles decreases from 3.14 to 2.84 eV when input x% Ni. The room-temperature photoluminescence (PL) spectra and X-ray photoelectron spectroscopy (XPS) confirm the existence of surface oxygen vacancies caused by the large specific surface area and the introduction of Ni ions. All the synthesized Ni-doped SnO2 nanoparticles achieve room-temperature ferromagnetism, with a saturation magnetization of up to 2.95 × 10−3 emu/g at a dopant concentration of 2%. The interaction between oxygen vacancies and Ni2+ realizes the magnetic transition of nanoparticles from diamagnetic to ferromagnetic.

AB - Ni-doped SnO2 dilute magnetic semiconductors were prepared by precipitation method. The obtained spherical nanoparticles are pure tetragonal rutile phase, and Ni ions promote the growth of SnO2 nanoparticles. The optical band gap energy of the SnO2 nanoparticles decreases from 3.14 to 2.84 eV when input x% Ni. The room-temperature photoluminescence (PL) spectra and X-ray photoelectron spectroscopy (XPS) confirm the existence of surface oxygen vacancies caused by the large specific surface area and the introduction of Ni ions. All the synthesized Ni-doped SnO2 nanoparticles achieve room-temperature ferromagnetism, with a saturation magnetization of up to 2.95 × 10−3 emu/g at a dopant concentration of 2%. The interaction between oxygen vacancies and Ni2+ realizes the magnetic transition of nanoparticles from diamagnetic to ferromagnetic.

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KW - Morphology

KW - Optical property

KW - SnO nanoparticle

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Ni-Doped SnO₂ Dilute Magnetic Semiconductors: Morphological Characteristics and Optical and Magnetic Properties

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