Effects of Ni concentration on structural, magnetic and optical properties of Ni-doped ZnO nanoparticles

Yang Liu; Hongbo Liu; Zhenguo Chen; Naveen Kadasala; Chenyi Mao; Yaxin Wang; Yongjun Zhang; Huilian Liu; Yanqing Liu; Jinghai Yang; Yongsheng Yan

doi:10.1016/j.jallcom.2014.03.079

Effects of Ni concentration on structural, magnetic and optical properties of Ni-doped ZnO nanoparticles

Yang Liu, Hongbo Liu, Zhenguo Chen, Naveen Kadasala, Chenyi Mao, Yaxin Wang, Yongjun Zhang, Huilian Liu, Yanqing Liu, Jinghai Yang, Yongsheng Yan

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

69 Scopus citations

Abstract

Ni-doped zinc oxide (Zn_1-xNi_xO, 0 ≤ x ≤ 0.08) diluted magnetic semiconductors have been synthesized by the using a sol-gel method. Structural, magnetic and optical properties of the samples have been studied. The results of X-ray diffraction (XRD), transmission electron microscope (TEM) and X-ray absorption fine structure (XAFS) indicated that Ni ions were substitutionally incorporated into the crystal lattice of ZnO. With Ni concentration increasing up to 2 at.%, all diffraction peaks corresponded to wurtzite structure of ZnO, but for Zn_0.97Ni_0.03O, secondary phase of NiO emerged. Based on the results of X-ray photoelectron spectroscopy (XPS), Ni incorporated into the ZnO lattice as Ni²⁺. The produced samples showed good high-Tc (Curie temperature) ferromagnetism. The results of vibrating sample magnetometer (VSM) and photoluminescence (PL) showed that ferromagnetism (FM) of the Ni-doped ZnO nanoparticles originated from the presence of the O vacancy.

Original language	English (US)
Pages (from-to)	281-285
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	604
DOIs	https://doi.org/10.1016/j.jallcom.2014.03.079
State	Published - Aug 15 2014

Keywords

Diluted magnetic semiconductors
Magnetic properties
Sol-gel method
Structure

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2014.03.079

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@article{c2c372f451214115a568b1b36b7a3d1c,

title = "Effects of Ni concentration on structural, magnetic and optical properties of Ni-doped ZnO nanoparticles",

abstract = "Ni-doped zinc oxide (Zn1-xNixO, 0 ≤ x ≤ 0.08) diluted magnetic semiconductors have been synthesized by the using a sol-gel method. Structural, magnetic and optical properties of the samples have been studied. The results of X-ray diffraction (XRD), transmission electron microscope (TEM) and X-ray absorption fine structure (XAFS) indicated that Ni ions were substitutionally incorporated into the crystal lattice of ZnO. With Ni concentration increasing up to 2 at.%, all diffraction peaks corresponded to wurtzite structure of ZnO, but for Zn0.97Ni0.03O, secondary phase of NiO emerged. Based on the results of X-ray photoelectron spectroscopy (XPS), Ni incorporated into the ZnO lattice as Ni2+. The produced samples showed good high-Tc (Curie temperature) ferromagnetism. The results of vibrating sample magnetometer (VSM) and photoluminescence (PL) showed that ferromagnetism (FM) of the Ni-doped ZnO nanoparticles originated from the presence of the O vacancy.",

keywords = "Diluted magnetic semiconductors, Magnetic properties, Sol-gel method, Structure",

author = "Yang Liu and Hongbo Liu and Zhenguo Chen and Naveen Kadasala and Chenyi Mao and Yaxin Wang and Yongjun Zhang and Huilian Liu and Yanqing Liu and Jinghai Yang and Yongsheng Yan",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China (Grant No. 61178074 ), National Youth Program Foundation of China (Grant No. 61378085 ), Program for New Century Excellent Talents in University ( NCET-09-0156 and NCET-11-0981 ), Program for the development of Science and Technology of Jilin province (Item No. 201201083 ) and the Twentieth Five-Year Program for Science and Technology of Education Department of Jilin Province (Item No. 20140156 ).",

year = "2014",

month = aug,

day = "15",

doi = "10.1016/j.jallcom.2014.03.079",

language = "English (US)",

volume = "604",

pages = "281--285",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Effects of Ni concentration on structural, magnetic and optical properties of Ni-doped ZnO nanoparticles

AU - Liu, Yang

AU - Liu, Hongbo

AU - Chen, Zhenguo

AU - Kadasala, Naveen

AU - Mao, Chenyi

AU - Wang, Yaxin

AU - Zhang, Yongjun

AU - Liu, Huilian

AU - Liu, Yanqing

AU - Yang, Jinghai

AU - Yan, Yongsheng

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (Grant No. 61178074 ), National Youth Program Foundation of China (Grant No. 61378085 ), Program for New Century Excellent Talents in University ( NCET-09-0156 and NCET-11-0981 ), Program for the development of Science and Technology of Jilin province (Item No. 201201083 ) and the Twentieth Five-Year Program for Science and Technology of Education Department of Jilin Province (Item No. 20140156 ).

PY - 2014/8/15

Y1 - 2014/8/15

N2 - Ni-doped zinc oxide (Zn1-xNixO, 0 ≤ x ≤ 0.08) diluted magnetic semiconductors have been synthesized by the using a sol-gel method. Structural, magnetic and optical properties of the samples have been studied. The results of X-ray diffraction (XRD), transmission electron microscope (TEM) and X-ray absorption fine structure (XAFS) indicated that Ni ions were substitutionally incorporated into the crystal lattice of ZnO. With Ni concentration increasing up to 2 at.%, all diffraction peaks corresponded to wurtzite structure of ZnO, but for Zn0.97Ni0.03O, secondary phase of NiO emerged. Based on the results of X-ray photoelectron spectroscopy (XPS), Ni incorporated into the ZnO lattice as Ni2+. The produced samples showed good high-Tc (Curie temperature) ferromagnetism. The results of vibrating sample magnetometer (VSM) and photoluminescence (PL) showed that ferromagnetism (FM) of the Ni-doped ZnO nanoparticles originated from the presence of the O vacancy.

AB - Ni-doped zinc oxide (Zn1-xNixO, 0 ≤ x ≤ 0.08) diluted magnetic semiconductors have been synthesized by the using a sol-gel method. Structural, magnetic and optical properties of the samples have been studied. The results of X-ray diffraction (XRD), transmission electron microscope (TEM) and X-ray absorption fine structure (XAFS) indicated that Ni ions were substitutionally incorporated into the crystal lattice of ZnO. With Ni concentration increasing up to 2 at.%, all diffraction peaks corresponded to wurtzite structure of ZnO, but for Zn0.97Ni0.03O, secondary phase of NiO emerged. Based on the results of X-ray photoelectron spectroscopy (XPS), Ni incorporated into the ZnO lattice as Ni2+. The produced samples showed good high-Tc (Curie temperature) ferromagnetism. The results of vibrating sample magnetometer (VSM) and photoluminescence (PL) showed that ferromagnetism (FM) of the Ni-doped ZnO nanoparticles originated from the presence of the O vacancy.

KW - Diluted magnetic semiconductors

KW - Magnetic properties

KW - Sol-gel method

KW - Structure

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VL - 604

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EP - 285

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Effects of Ni concentration on structural, magnetic and optical properties of Ni-doped ZnO nanoparticles

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