Synthesis of Mn-doped ZnO diluted magnetic semiconductors in the presence of ethyl acetoacetate under solvothermal conditions

Chen, Jing; Jiang, Yeping; Bai, Wei; Chu, Junhao; Liu, Aiyun

doi:10.1016/j.jmmm.2010.02.044

Cited by 48 publications

(17 citation statements)

References 36 publications

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“…The negative Curie-Weiss temperature Y is about À65, À 195 and À 180 K for x ¼0.05, 0.15 and 0.25, respectively, indicating local antiferromagnetic (AFM) interaction in the samples. However, due to the plausible ferromagnetic (FM) impurity of ZnMn 2 O 4 , whose Curie temperature (T C ) is 1298 K [32], and the formation of ZnMnO 3 , whose magnetic behavior is spin-glass [33] or paramagnetic [34], the AFM interaction does not follow a simple evolution of strengthening with increasing x as most of the references [2,17,32]. [35].…”

Section: Magnetic Propertymentioning

confidence: 99%

Structural, thermal and magnetic investigations of heavily Mn-doped ZnO nanoparticles

Duan

Zhao

Liu

et al. 2011

Journal of Magnetism and Magnetic Materials

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Section: Magnetic Propertymentioning

confidence: 99%

Structural, thermal and magnetic investigations of heavily Mn-doped ZnO nanoparticles

Duan

Zhao

Liu

et al. 2011

Journal of Magnetism and Magnetic Materials

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“…There are numerous reports on the utilization of several metals for doping such as Nd [19], Sn [20], Ag [21], Mn [22], Ga [23] and Ce [13][14][15][16][17]24]. In this framework, the doping of RE ion in ZnO is of great importance due to signs of tunable luminescence and ferromagnetism at room temperature.…”

Section: Introductionmentioning

confidence: 99%

“…Ce doped ZnO nanophosphors have been comprehensively studied because of the unusual interaction between the excited states and the host lattice. CeO 2 has a band gap of 3.0 eV and possesses a unique optical characteristic for visible LED and high power laser that are similar to ZnO [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. Thus, the Ce doped ZnO nanomaterials also exhibited versatile properties and have been explored to assess the photoluminescence and photoelectrochemical activity under visible light, gas-sensing properties and ferromagnetism [24,29,30].…”

Section: Introductionmentioning

confidence: 99%

Effect of Ce doping on the structural, optical and magnetic properties of ZnO nanoparticles

Sharma

Sharma²,

Kumar³

et al. 2016

J Mater Sci: Mater Electron

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In the present study Zinc Oxide (ZnO) nanoparticles and Rare Earth (RE) ion Cerium (Ce) doped ZnO nanoparticles were synthesized by chemical precipitation technique. The synthesized nanoparticles were characterized by X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscope (TEM), photoluminescence spectroscopy (PL), UV-visible spectroscopy and ferromagnetism behavior at room temperature. The XRD and EDX analysis revealed that Ce doped ZnO pattern matched with the ZnO pattern i.e. they exhibited hexagonal wurtzite structure and Ce ions were successfully incorporated into the ZnO nanoparticles. TEM images illustrated the average diameter of synthesized nanoparticles. The average diameter of ZnO and Ce doped ZnO nanoparticles was around 20 nm. PL measurements revealed that ZnO nanoparticles and Ce doped ZnO nanoparticles had an UV emission and a green emission while the Ce ions doping induced a red shift in the UV emission with broadening in the green emission. Direct type of transition of band gaps was confirmed by transmission spectra occurring at 3.5 and 3.2 eV respectively for ZnO nanoparticles and Ce doped ZnO nanoparticles i.e. decrease of band gap energy with doping of Ce ions in ZnO nanoparticles. The magnetization study on the Ce doped ZnO nanoparticles exposed outstanding ferromagnetism property at room temperature.

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“…It's transparent in the visible region and the thermal equilibrium solubility of Mn in ZnO is larger than 10 mol% [14]. For this reasons, Mn doped ZnO nanocrystals has attracted an increasing interest and several works reported RT ferromagnetic behavior [15][16][17][18][19][20][21][22][23]. However, the correct mechanism of this RT ferromagnetism behavior is still a topic of debate.…”

Section: Introductionmentioning

confidence: 99%

Sol–gel synthesis and room temperature ferromagnetism in Mn doped ZnO nanocrystals

Omri

Lemine

Ghoul

et al. 2015

J Mater Sci: Mater Electron

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We report the synthesis of Zn 1-x Mn x O nanoparticles prepared by a sol-gel processing technique for x ranging from 0 to 0.05. The structural, morphological and magnetic properties of the nanoparticles were investigated by XRD, transmission electron microscopy and superconducting quantum interference device. The structural properties showed that the obtained nanoparticles are in wurtzite phase structure with the presence of ZnMnO 3 secondary phase at higher concentration. The crystallite size decreases with increasing Mn concentration and is in the range of 35-17 nm. All the samples are ferromagnetic with clear hysteresis loop at room temperature but with low values for the saturation. It was found that increasing Mn concentration is not helping the long range ferromagnetic order, which might be due to the antiferromagnetic exchanges. This ferromagnetism order is due mainly to the defects and to the substituting of Mn in the ZnO host rather than from the secondary phases of Mn.

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Synthesis of Mn-doped ZnO diluted magnetic semiconductors in the presence of ethyl acetoacetate under solvothermal conditions

Cited by 48 publications

References 36 publications

Structural, thermal and magnetic investigations of heavily Mn-doped ZnO nanoparticles

Structural, thermal and magnetic investigations of heavily Mn-doped ZnO nanoparticles

Effect of Ce doping on the structural, optical and magnetic properties of ZnO nanoparticles

Sol–gel synthesis and room temperature ferromagnetism in Mn doped ZnO nanocrystals

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