Effect of the synthesis route on the structural and dielectric properties of SrBi1.8Y0.2Nb2O9 ceramics

Afqir, Mohamed; Tachafine, Amina; Fasquelle, Didier; Elaatmani, M.; Carru, Jean-Claude; Zegzouti, Abdelouahad; Hammioui, M. El

doi:10.1007/s12613-018-1683-7

Cited by 10 publications

(2 citation statements)

References 43 publications

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“…In addition, the microscopic image shows a porosity, which indicates that the sintering ECS Journal of Solid State Science and Technology, 2021 10 041002 conditions are optimal to obtain ceramics with high density. 26,27 The percentage of density was found to be in the range 94%-95% in all the ceramic samples, given in Table III. The average grain size was observed to vary and it is there to decrease in SBPGN and found to increase in SBPYN, SBEGN and SBEYN ceramic samples compared to SBN for the same sintering temperature, given in Table III.…”

Section: Resultsmentioning

confidence: 89%

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi₂Nb₂O₉ lead Free Ceramics

Nagamani¹,

Kiran²,

Bhimavarapu³

et al. 2021

ECS J. Solid State Sci. Technol.

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Lead free dielectric materials of Strontium Bismuth Niobate SrBi2Nb2O9 (SBN) and rare earth double doped SrBi1.8Pr0.1Gd0.1Nb2O9 (SBPGN), SrBi1.8Pr0.1Y0.1Nb2O9 (SBPYN), SrBi1.8Eu0.1Gd0.1Nb2O9 (SBEGN) and SrBi1.8Eu0.1Y0.1Nb2O9 (SBEYN) were prepared by two-stage solid-state reaction route. The XRD studies have confirmed the formation of single-phase orthorhombic crystal structure. The microstructural analysis showed the formation of plausible needle shaped grains in the prepared ceramics. The FTIR study was used to investigate the effect of preparation and doping processes on the band intensities of the spectra. Mechanical studies showed that SBEGN and SBEYN ceramics exhibited mild wear (<10−6 mm3 Nm−1) compared to others. The low friction coefficient values of SBPYN (0.044), SBEGN (0.058) and SBEYN (0.002) to that of SBN necessitate lattice strain in these materials. The VSM studies on the rare earth double doped SBN ceramic materials confirmed the induction and existence of magnetic order in SBPGN and SBEGN.

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Section: Resultsmentioning

confidence: 89%

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi₂Nb₂O₉ lead Free Ceramics

Nagamani¹,

Kiran²,

Bhimavarapu³

et al. 2021

ECS J. Solid State Sci. Technol.

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“…The obtained high density (94%-95%) of the ceramic samples can be ascribed to the optimized sintering temperature [29,30] from Archimedes water displacement method (TTB15) by using Archimedes principle [31] with water as immersion liquid with its density r = 1 0 g cm −3 and the expression for the determination of experimental density is…”

Section: Methodsmentioning

confidence: 99%

Multi-functional attributes of rare earth double doped SrBi₂Nb₂O₉ ferroelectric system

Nagamani¹,

Kiran²,

B³

et al. 2022

Phys. Scr.

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The ferroelectric perovskite SrBi2Nb2O9 (SBN) material with a low concentration of double doping at the Bi-site of SBN was studied to understand its influence and usefulness in integrated optoelectronic, soft magnetic memory devices and wear-resistant tribomaterials. The aim of the present study is double doping of SBN with a set of rare earth elements Pr3+/Dy3+ (SBPDN), Pr3+/Gd3+ (SBPGN), Pr3+/Sm3+ (SBPSN), and Pr3+/Y3+ (SBPYN) at the Bi-site of SBN to establish the multifunctional ceramic nature pertaining to diverse applications. XRD with Rietveld refinement analysis acknowledged a single-phase orthorhombic structure with an increase in lattice parameters and unsystematic changes in crystallite size. SEM study indicated that the samples possessed non-uniformly distributed needle-shaped grains. The purity of the material and the detection of functional groups were received from the EDS and FTIR spectroscopy. Structural modifications in SBN have been determined based on a diffuse reflectance spectroscopy (DRS) study and therefore the band gap values decrease from 2.98 eV (SBN) to 2.70 eV (double doping) because of the growth of distortion in the structure and pronounced increase in the density of localized states. Photoluminescence (PL) study on double doped SBN material with an excitation wavelength of 320 nm has yielded a novel red emission at 609 nm, that may be useful for white LEDs. The ferromagnetic signature in the studied materials was confirmed from the room temperature VSM study. Noticed mild wear and a low coefficient of friction in the studied materials of SBPDN and SBPSN compared to other studied ceramic samples from mechanical studies. The simultaneous manifestation of optical, magnetic, and mechanical properties by double-doped SBN ceramics keeps the materials as multi-functional candidates for optoelectronic devices, soft magnetic memory devices, and wear-resistant tribomaterials.

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Structural and electrical properties of Bi2YSnVO9 ceramic

Gupta

Mahapatra

Choudhary

et al. 2020

Ceramics International

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Effect of the synthesis route on the structural and dielectric properties of SrBi1.8Y0.2Nb2O9 ceramics

Cited by 10 publications

References 43 publications

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi₂Nb₂O₉ lead Free Ceramics

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi₂Nb₂O₉ lead Free Ceramics

Multi-functional attributes of rare earth double doped SrBi₂Nb₂O₉ ferroelectric system

Structural and electrical properties of Bi2YSnVO9 ceramic

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Effect of the synthesis route on the structural and dielectric properties of SrBi1.8Y0.2Nb2O9 ceramics

Cited by 10 publications

References 43 publications

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi2Nb2O9 lead Free Ceramics

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi2Nb2O9 lead Free Ceramics

Multi-functional attributes of rare earth double doped SrBi2Nb2O9 ferroelectric system

Structural and electrical properties of Bi2YSnVO9 ceramic

Contact Info

Product

Resources

About

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi₂Nb₂O₉ lead Free Ceramics

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi₂Nb₂O₉ lead Free Ceramics

Multi-functional attributes of rare earth double doped SrBi₂Nb₂O₉ ferroelectric system