Optical band gap tuning, zero dielectric loss and room temperature ferromagnetism in (Ag/Mg) co-doped SnO2 compounds for spintronics applications

Narzary, R.; Dey, Bikash Kumar; Chouhan, L.; Kumar, Santosh; Ravi, S.; Srivastava, S. K.

doi:10.1016/j.mssp.2022.106477

Cited by 31 publications

(7 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The optical band gap was found to decrease with an initial doping concentration, followed by an increase upon further increasing the Mg doping concentration. Narzary et al reported that Sn 0.94−y Ag 0.06 Mg y O 2 (with y = 0, 0.03, 0.06, 0.09, 0.12) exhibits RTFM, with coercivity (H C ) values lying within the range 10-50 Oe [27]. These materials were found to show excellent optical transparency [27].…”

Section: Optical Propertymentioning

confidence: 99%

“…Narzary et al reported that Sn 0.94−y Ag 0.06 Mg y O 2 (with y = 0, 0.03, 0.06, 0.09, 0.12) exhibits RTFM, with coercivity (H C ) values lying within the range 10-50 Oe [27]. These materials were found to show excellent optical transparency [27].…”

Section: Optical Propertymentioning

confidence: 99%

“…yAg0.06MgyO2 (with y = 0, 0.03, 0.06, 0.09, 0.12) exhibits RTFM, with coe lying within the range 10-50 Oe [27]. These materials were found to sho transparency [27]. Crystals 2023, 13, 932 10 of 14 yAg0.06MgyO2 (with y = 0, 0.03, 0.06, 0.09, 0.12) exhibits RTFM, with coercivity (HC) values lying within the range 10-50 Oe [27].…”

Section: Optical Propertymentioning

confidence: 99%

“…Narzary et al reported that Sn 0.94−y Ag 0.06 Mg y O 2 (with y = 0, 0.03, 0.06, 0.09, 0.12) exhibited RTFM with coercivity values lying within the range of 10-50 Oe [27]. These materials were found to show excellent optical transparency [27]. In the present work, we decided to conduct an experimental investigation into the crystal structure, Raman spectroscopy, and optical properties of Sn 1−x Mg x O 2 (with x = 0, 0.02, 0.04, 0.06, 0.08, and 0.10) compounds.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Crystal Structure, Raman Spectroscopy and Optical Property Study of Mg-Doped SnO2 Compounds for Optoelectronic Devices

et al. 2023

Self Cite

View full text Add to dashboard Cite

Researchers have been consistently looking for new materials that can be integrated in optoelectronic and spintronic devices. In this research, we investigated the crystalline structure, Raman, and optical characteristics of Mg-doped SnO2 compounds. The solid-state reaction technique was utilized to produce polycrystalline samples of Sn1-xMgxO2 (0 ≤ x ≤ 0.10) for their potential use in optoelectronics devices. It was discovered that all the compounds were synthesized into a tetragonal rutile-type structure of SnO2. The analysis of these samples using Raman spectroscopy provided more evidence, supporting the creation of the tetragonal rutile phase of SnO2 and the successful integration of Mg ions in SnO2. The measurements of the optical properties, such as absorbance and transmittance, carried out with a UV-Vis spectrophotometer demonstrated that the optical band gap widened with the increase in the magnesium doping concentration in SnO2. In addition, it was noticed that increasing the quantity of magnesium doping concentration led to an increase in the transmittance value from 83% to 91%.

show abstract

Section: Optical Propertymentioning

confidence: 99%

Section: Optical Propertymentioning

confidence: 99%

Section: Optical Propertymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Crystal Structure, Raman Spectroscopy and Optical Property Study of Mg-Doped SnO2 Compounds for Optoelectronic Devices

et al. 2023

Self Cite

View full text Add to dashboard Cite

show abstract

“…Kaviya Pandimeena et al [23], observed magnetic switching from paramagnetism to soft ferromagnetism at room temperature. Narzary et al [24], synthesized Sn 0.94−y Ag 0.06 Mg y O 2 by solid-state reaction method and reported that Ag-Mg co-doping induces room temperature ferromagnetism with ultralow coercivity in SnO 2 . Supin et al [25] explored the impact of Co, Fe, and Ni doping on the structural, optical, and magnetic properties of SnO 2 nanoparticles synthesized by the sol-gel method.…”

Section: Introductionmentioning

confidence: 99%

Experimental conditions for room temperature ferromagnetism in Fe-doped SnO₂ via mechanochemical milling and thermal treatment

Sánchez,

Beltrán,

Baggio Saitovitch

et al. 2024

Mater. Res. Express

View full text Add to dashboard Cite

Identifying optimal experimental conditions, preferably through a simple and cost-effective method, for the fabrication of oxide-diluted magnetic semiconductors, such as Fe-doped SnO2, holds great significance in the quest for spintronic materials operating at room temperature (RT). While mechanochemical milling is a well-established technique meeting these requirements, its numerous milling variables necessitate careful consideration of restricted experimental conditions. In this study, we present some experimental mechanochemical milling conditions to prepare impurity-free iron-doped tin dioxide nanoparticles exhibiting a RT ferromagnetic signal. To achieve this, we investigated the effects of milling time, the choice of the starting Sn reactant, and iron concentration on the purity of Sn1-xFexO2 (x=0, 0.03, and 0.05) nanopowders obtained through mechanochemical milling followed by thermal treatment. Characterization through XRD, XANES, and EXAFS at the Fe K-edge, RT Raman spectroscopy, 119Sn and 57Fe Mössbauer spectroscopies, and magnetic measurements was conducted. Among the experimental techniques, micro-Raman spectroscopy proved most effective in detecting the formation of hematite as an impurity phase. Our results indicate that extending the milling time to 12 h, as opposed to 3 h, employing anhydrous SnCl2, instead of SnCl2·2H2O and using the low iron concentration of x = 0.03, results in proper conditions for producing impurity-free samples with a robust RT ferromagnetic signal. The oxidation states for iron and tin ions were determined to be 3+ and 4+, respectively, with both occupying octahedral sites, suggesting iron's replacement of tin. Our findings propose that both the bound magnetic polaron and RKKY models offer potential explanations for the origin of the ferromagnetic signal observed at room temperature in Sn0.97Fe0.03O2 sample milled for 12 h.

show abstract

Characterization of PbMo_0.3W_0.7O₄ Crystal: A Potential Material for Photocatalysis and Optoelectronic Applications

Isik,

Gasanly

2024

Cryst. Res. Technol.

View full text Add to dashboard Cite

PbMo0.3W0.7O4 semiconductor crystal, which contains the balanced ratios of Mo and W, is grown for the first time by Czochralski method. The structural and optical properties of the crystal are investigated in detail in the present study. Structural analysis shows that crystal has tetragonal structure like PbMoO4 and PbWO4 compounds. The optical characteristics are studied by transmission, Raman, FTIR and photoluminescence methods. The bandgap energy is found to be 3.18 eV, and the positions of the conduction and valence bands are determined. The vibrational characteristics are studied by means of Raman and FTIR spectroscopy techniques. Photoluminescence spectrum presents three peaks around 486, 529, and 544 nm which fall into the green emission spectral range. Taking into account the properties of the compound, it is stated that PbMo0.3W0.7O4 (or Pb(MoO4)0.3(WO4)0.7) has the potential to be used in water splitting applications and optoelectronic devices that emit green light.

show abstract

Optical band gap tuning, zero dielectric loss and room temperature ferromagnetism in (Ag/Mg) co-doped SnO2 compounds for spintronics applications

Cited by 31 publications

References 40 publications

Crystal Structure, Raman Spectroscopy and Optical Property Study of Mg-Doped SnO2 Compounds for Optoelectronic Devices

Crystal Structure, Raman Spectroscopy and Optical Property Study of Mg-Doped SnO2 Compounds for Optoelectronic Devices

Experimental conditions for room temperature ferromagnetism in Fe-doped SnO₂ via mechanochemical milling and thermal treatment

Characterization of PbMo_0.3W_0.7O₄ Crystal: A Potential Material for Photocatalysis and Optoelectronic Applications

Contact Info

Product

Resources

About

Optical band gap tuning, zero dielectric loss and room temperature ferromagnetism in (Ag/Mg) co-doped SnO2 compounds for spintronics applications

Cited by 31 publications

References 40 publications

Crystal Structure, Raman Spectroscopy and Optical Property Study of Mg-Doped SnO2 Compounds for Optoelectronic Devices

Crystal Structure, Raman Spectroscopy and Optical Property Study of Mg-Doped SnO2 Compounds for Optoelectronic Devices

Experimental conditions for room temperature ferromagnetism in Fe-doped SnO2 via mechanochemical milling and thermal treatment

Characterization of PbMo0.3W0.7O4 Crystal: A Potential Material for Photocatalysis and Optoelectronic Applications

Contact Info

Product

Resources

About

Experimental conditions for room temperature ferromagnetism in Fe-doped SnO₂ via mechanochemical milling and thermal treatment

Characterization of PbMo_0.3W_0.7O₄ Crystal: A Potential Material for Photocatalysis and Optoelectronic Applications