Oxygen vacancy induced electrical conduction and room temperature ferromagnetism in system BaSn1−xNixO3(0  ⩽  x  ⩽  0.20)

Kumar, Upendra; Ansaree, Jawed; Verma, Atul Kumar; Upadhyay, Shail; Gupta, Govind

doi:10.1088/2053-1591/aa9416

Cited by 41 publications

(14 citation statements)

References 54 publications

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“…The goodness of fitting was measured from calculating the parameters (S)=Rwp/Re and provided in Table 1. It was noted from Table 1 that the value of S found close to unity and reflects accuracy of derived parameters [40] . Rietveld refinement pattern of samples were shown in Fig.…”

Section: Phase Analysis Using Powder X-ray Diffractionsupporting

confidence: 59%

Structural, Optical and Electrical Properties of CaSnO3 and Ca0.98Nd0.02Sn0.98Ti0.02O3 Synthesized using Sol-Gel Method

Kumar¹,

Khan²,

Singh³

et al. 2021

Adv. Mater. Lett.

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Section: Phase Analysis Using Powder X-ray Diffractionsupporting

confidence: 59%

Structural, Optical and Electrical Properties of CaSnO3 and Ca0.98Nd0.02Sn0.98Ti0.02O3 Synthesized using Sol-Gel Method

Kumar¹,

Khan²,

Singh³

et al. 2021

Adv. Mater. Lett.

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“…Undoped Sr 2 SnO 4 shows the presence of weak ferromagnetism at low magnetic field and diamagnetic at high magnetic field. In many oxide ceramics based on stannates, the origin of ferromagnetism is well explained in terms of oxygen vacancies which promote ferromagnetic ordering via

()(, {Sn}^{2 +} ‐ V_{O}^{. .} ‐ {Sn}^{4 +})

as well F‐center formed by oxygen vacancies in the sample 44 . Since from Figure 10, it is noticed that all doped sample exhibit ferromagnetism at room temperature which suggests the presence of ferromagnetic ordering

()(, {Sn}^{2 +} ‐ V_{O}^{. .} ‐ {Sn}^{4 +})

among all samples.…”

Section: Resultsmentioning

confidence: 93%

“…O − Sn 4+ as well F-center formed by oxygen vacancies in the sample. 44 Since from Figure 10, it is noticed that all doped sample exhibit ferromagnetism at room temperature which suggests the presence of ferromagnetic ordering…”

Section: Origin Of Ferromagnetismmentioning

confidence: 94%

Investigation of structural, optical, and magnetic properties of Nd‐doped Sr₂SnO₄ Ruddlesden Popper oxide

2020

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The samples of Sr2‐xNdxSnO4 with x = 0, 0.01, 0.02, 0.04, 0.06, and 0.10 were synthesized by a high‐temperature solid‐state ceramic route. Rietveld refining of X‐ray diffraction results showed that all the synthesized compositions are single phase under tetragonal crystal structure. The presence of functional group and local structure has been studied using FTIR and Raman spectroscopy, respectively. XPS study of samples showed the presence of oxygen vacancy and interstitial oxygen in the sample. Optical band gap of samples analyzed by UV‐Vis spectra gradually increases with dopant concentration, and Photoluminescence (PL) spectroscopy study showed most intense emission around 1064 nm. Room‐temperature magnetic hysteresis curve in sample SSN2 showed ferromagnetism, slowly decreasing with Nd and becoming antiferromagnetic for higher compositions. Utilizing the absorption state observed in PL as metastable state makes it promising candidate for laser and IR detector application and the ferromagnetic/antiferromagnetic nature of sample makes it suitable candidate for spintronics device applications.

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“…BaSnO3 is crystallized into cubic crystal structure with Ba2+ ions in dodecahedral site and Sn 4+ ion is at octahedral site. The distance between the Sn-O and Ba-O were 2.05779 Å, 2.91015 Å respectively [46]. Also, a comparison between the dc conductivity of La-doped BaSnO3 and with present investigated samples at 600 o C has been made [29].…”

mentioning

confidence: 87%

“…Where, , , are the positive constant, contribution of Lorentzian and Gaussian function present in XRD peak respectively. The background for the XRD diffraction pattern has been described in terms of 12 th order polynomial function [46]. The refinement has been processed…”

Section: Reitveld Profile Analysismentioning

confidence: 99%

Studies on the structure, optical, ac conduction mechanism by OLPT model and impedance spectroscopy of La-doped Ba2SnO4 Ruddlesden Popper Oxide

Kumar

Maurya

Cheema

et al. 2021

Preprint

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The conventional ceramic route has been used to prepare the La-doped Ba2SnO4 samples by heat-treatment at 1000oC and sintered at 1250oC. The phase identification was carried out using XRD and found to be single phase up to 4 atoms %. The solubility of La at Ba-site were further reconfirmed using FTIR and Raman analysis. The AC conductivity spectra of all samples follow universal Johnscher’s power law; however, the thermal dependence of suggest Arrhenius type conduction within the sample. Further, the scaled conductivity and frequency at all temperatures superimposes on a single master curve, indicates the invariance of conduction mechanism. The impedance spectroscopy studies suggest the major contribution of grain in the conduction and relaxation. The present material could be potentially used in semiconductor device, UV-detector, and mixed ionic and electronic conductor (MIECs) by utilizing absorption states and thermo-curves as metastable state.

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Oxygen vacancy induced electrical conduction and room temperature ferromagnetism in system BaSn_1−xNi_xO₃(0 ⩽ x ⩽ 0.20)

Cited by 41 publications

References 54 publications

Structural, Optical and Electrical Properties of CaSnO3 and Ca0.98Nd0.02Sn0.98Ti0.02O3 Synthesized using Sol-Gel Method

Structural, Optical and Electrical Properties of CaSnO3 and Ca0.98Nd0.02Sn0.98Ti0.02O3 Synthesized using Sol-Gel Method

Investigation of structural, optical, and magnetic properties of Nd‐doped Sr₂SnO₄ Ruddlesden Popper oxide

Studies on the structure, optical, ac conduction mechanism by OLPT model and impedance spectroscopy of La-doped Ba2SnO4 Ruddlesden Popper Oxide

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Oxygen vacancy induced electrical conduction and room temperature ferromagnetism in system BaSn1−xNixO3(0 ⩽ x ⩽ 0.20)

Cited by 41 publications

References 54 publications

Structural, Optical and Electrical Properties of CaSnO3 and Ca0.98Nd0.02Sn0.98Ti0.02O3 Synthesized using Sol-Gel Method

Structural, Optical and Electrical Properties of CaSnO3 and Ca0.98Nd0.02Sn0.98Ti0.02O3 Synthesized using Sol-Gel Method

Investigation of structural, optical, and magnetic properties of Nd‐doped Sr2SnO4 Ruddlesden Popper oxide

Studies on the structure, optical, ac conduction mechanism by OLPT model and impedance spectroscopy of La-doped Ba2SnO4 Ruddlesden Popper Oxide

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Oxygen vacancy induced electrical conduction and room temperature ferromagnetism in system BaSn_1−xNi_xO₃(0 ⩽ x ⩽ 0.20)

Investigation of structural, optical, and magnetic properties of Nd‐doped Sr₂SnO₄ Ruddlesden Popper oxide