Structure, optical and ferromagnetic properties of Zn1−x−yMnxCryO nanoparticles diluted magnetic semiconductors synthesized by citrate sol–gel method

Abo-Naf, S. M.; Ibrahim, S.; Marzouk, M. A.

doi:10.1007/s00339-021-04583-w

Cited by 5 publications

(1 citation statement)

References 39 publications

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“…In most cases, magnetic semiconductors have low Curie temperatures. Interest in DMSs was recently aroused by theoretical and experimental work on semiconductors [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. DMS based on the transition element doped and on semiconductors has two important characteristics.…”

Section: Introductionmentioning

confidence: 99%

DFT based investigation of the structural, magnetic, electronic, and half-metallic properties of solid In1-xTixSb solutions

Amrani¹,

Berber²,

Mebrek³

2021

Condens. Matter Phys.

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With the intention to reveal the effect of the substitution, Ti-doped InSb alloy, we accomplished a first-principles prediction within the FPLAPW+lo method. We used GGA-PBEsol scheme attached with the improved TB-mBJ approach to predict structural, electronic, and magnetic properties of In1-xTixSb with concentration x=0, 0.125, 0.25, 0.50, 0.75, 0.875, and 1. Our lattice parameters are found in favorable agreement with the available theoretical and experimental data. The calculation shows that all structures are energetically stable. The substitutional doping transforms the ionic character of the InSb compound in half-metallic ferromagnetic comportment for concentration x = 0, 0.125, 0.25, and 0.50, with a spin polarization of 100% at the Fermi level, and metallic nature for In0.25Ti0.75Sb and In0.125Ti0.875Sb. The total magnetic moments are also estimated at about 1 mu;B. In0.875Ti0.125Sb, In0.75Ti0.25Sb, and In0.50Ti0.50Sb have half-metallic ferromagnets comportment and they can be upcoming applicants for spintronics applications.

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Section: Introductionmentioning

confidence: 99%

DFT based investigation of the structural, magnetic, electronic, and half-metallic properties of solid In1-xTixSb solutions

Amrani¹,

Berber²,

Mebrek³

2021

Condens. Matter Phys.

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Role of Mn/Cr dual-doped ZnO nanoparticles of diluted magnetic semiconductors: influence on structural and electrical properties

2021

Self Cite

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Sol-gel method was used to successfully produce dilute magnetic semiconductor ( Zn 1−x−y Mn x Cr y O) nanoparticles. Fourier transforms infrared spectroscopy (FTIR) and electrical conductivity tests were used to investigate the structural and electrical properties of the prepared samples. FTIR spectra are used to examine the functional chemical bonding properties of various elements and compounds found in materials. The dopant's incorporation into the ZnO framework structure is confirmed by FTIR spectra. The dominance of the Mn-O or Cr-O interaction in the Zn-O-Mn or Zn-O-Cr bonds may result from an increase in Mn or Cr concentration in the wurtzite structure, which could lead to structural stress and defects. Within the frequency range of 0.042 kHz-1 MHz and the temperature range of 298-573(K), the conductivity (σ ac ) was measured. The increase in conductivity values is more pronounced for samples with lower doping concentrations of Mn and Cr. The maximum σ ac value is reached in the sample with 1.5% Mn and 0.5% Cr. The maximum ɛʹ value reached in the sample with 10% Cr. The prepared samples are considered as candidates for semiconductor materials in electronic devices.

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Photoluminescence behavior of nano-structured sol-gel prepared zinc oxide activated with manganese and/or chromium ions

Ibrahim

Abo-Naf

Marzouk

2021

J Mater Sci: Mater Electron

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Structure, optical and ferromagnetic properties of Zn1−x−yMnxCryO nanoparticles diluted magnetic semiconductors synthesized by citrate sol–gel method

Cited by 5 publications

References 39 publications

DFT based investigation of the structural, magnetic, electronic, and half-metallic properties of solid In1-xTixSb solutions

DFT based investigation of the structural, magnetic, electronic, and half-metallic properties of solid In1-xTixSb solutions

Role of Mn/Cr dual-doped ZnO nanoparticles of diluted magnetic semiconductors: influence on structural and electrical properties

Photoluminescence behavior of nano-structured sol-gel prepared zinc oxide activated with manganese and/or chromium ions

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