The effect of Nd and Zr co-substitution on structural, magnetic and photocatalytic properties of Bi1-xNdxFe1-xZrxO3 nanoparticles

Esmaili, Leyla; Gholizadeh, Ahmad

doi:10.1016/j.mssp.2020.105179

Cited by 34 publications

(29 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4. The strong bands observed at around 660 cm -1 and 545 cm -1 are originated from stretching vibration of the Mn-O bond lengths and bending vibrations bond of O-B-O bond angles in octahedron BO 6 of SrMnO 3 perovskite structure, respectively (Esmaili and Gholizadeh 2020;Gholizadeh 2019;Gholizadeh and Malekzadeh 2017). The positions of two strong bands observed at around 580 cm -1 and 450 cm -1 are assigned to vibrations of the metaloxygen in tetrahedral and octahedral sites of spinel cubic structure, respectively (Gholizadeh and Beyranvand 2020;Gholizadeh 2017).…”

Section: Ft-ir Analysismentioning

confidence: 99%

Comparing Catalytic Activity of MgMnO3 and SrMnO3 Nanocatalyst for Synthesis of Polyhydroquinoline and New Derivatives via Hantzsch Reaction

Soleimani

Salehi

Gholizadeh

2020

Iran J Sci Technol Trans Sci

Self Cite

View full text Add to dashboard Cite

Spinel-type oxide MgMnO 3 and perovskite-type oxide SrMnO 3 have been synthesized by two-step procedures comprising the hydrothermal and solid-state methods. The as-prepared catalysts were characterized by X-ray powder diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis and the morphologies of the synthesized materials were figured out by field emission scanning electron microscopy. The catalytic performance of synthesized materials were investigated by synthesizing the polyhydroquinolines, which was used Design-Expert software and response surface methodology (central composite design) for optimization of reaction efficiently. The comparison study illustrates that MgMnO 3 has better catalytic performance than SrMnO 3 and optimized condition for the synthesis of polyhydroquinoline (which is produced by the reaction of ethyl acetoacetate, benzaldehyde, dimedone and ammonium acetate) was found to be 8 mg of MgMnO 3 as the catalyst, 33 min for the reaction time and 100°C for the reaction temperature. This condition was used for the synthesis of other polyhydroquinoline derivatives.

show abstract

Section: Ft-ir Analysismentioning

confidence: 99%

Comparing Catalytic Activity of MgMnO3 and SrMnO3 Nanocatalyst for Synthesis of Polyhydroquinoline and New Derivatives via Hantzsch Reaction

Soleimani

Salehi

Gholizadeh

2020

Iran J Sci Technol Trans Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is clear that Ce/Zr co-substitution increases the grain size and the platelet hexagons show lower porosity and higher density than that for BFO. According to the structure results, further reduction in the internal microstrain with increasing the Ce/Zr cosubstitution accompanied by a reduction in internal energy and pressure can only be achieved by a decrease of the grain boundary or increase of the grain size [7].…”

Section: Morphological Analysismentioning

confidence: 99%

“…Recent studies revealed that a strategy of co-doping of the Bi-site, and Fe-site can significantly improve the magnetic and ferroelectric properties of BFO nanoparticles, [11][12][13][14][15][16][17][18][19][20][21]. We recently reported that the A-site (Nd, Y, Gd) and B-site (Mn, Zr) co-substitution of BFO have a result to reduce the particle size to less than 62 nm which will destruct or suppress the magnetic spiral structure [6][7]. However, in present work, hydrothermal method was used for the synthesis of pure single-phase Bi1-xCexFe1-xZrxO3 (x = 0.00, 0.03, 0.06) at a low temperature 180 °C without a further calcination step.…”

Section: Introductionmentioning

confidence: 99%

“…The ferroelectricity and G-type antiferromagnetic characteristics of BFO come respectively from the lone-pair distortion on the 6s 2 of Bi 3+ ions and spin-exchange coupling between half-filled 'd' orbital of Fe 3+ ions [2][3]. Despite this, inherent problems of the bulk BFO such as formation of secondary phases, high leakage current, low magnetoelectric (ME) coupling, zero macroscopic remnant magnetization (Mr) have been restricted its multifunctional applications at room temperature [4][5][6][7]. In recent years, attempts have been made to enhance reduce dielectric loss, ferroelectric properties, and leakage current, increase remnant polarization, modify its inhomogeneous-spatial spin-modulated (incommensurate) structure, and intensify magnetoelectric interaction [8][9][10][11][12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hydrothermal Synthesis of Ce/Zr co-substituted BiFeO3: R3c-to-P4mm Phase Transition and Enhanced Room Temperature Ferromagnetism

Adineh

Gholizadeh

2021

Preprint

Self Cite

View full text Add to dashboard Cite

A facile hydrothermal method was used for fabricating phase-pure Bi1 − xCexFe1−xZrxO3 (x = 0.00, 0.03, 0.06) multiferroic ferrites, and the dependence of structural, optical, and magnetic properties on the composition have been investigated. The samples were investigated by X-ray diffraction (XRD), Raman and Fourier-transform infrared (FT-IR) spectroscopies, scanning electron microscopy, UV-Vis spectroscopy, and vibrating sample magnetometer at room temperature. Structural results show that the structure of Bi1 − xCexFe1−xZrxO3 ferrites is indexed to a rhombohedral structure with R3c space group. However, the weakening in the intensity, the expansion of the line-width of all bands, and some band shifts observed in Raman spectra indicate a structural transition from rhombohedral (R3c) to pseudo-tetragonal (P4mm) phase as the content of Ce/Zr increases. Also, a significantly enhanced intensity of the A1-2 mode in Raman spectra means that there is a novel behavior of magnetic anisotropy in the Ce/Zr co-substituted samples. A significant increase in optical band gap with increasing of the Ce/Zr co-substitution suggests that the materials are suitable for technological applications. Magnetic properties of the samples show a magnetic transition from antiferromagnetic to ferromagnetic phase due to the presence of the rhombohedral to the tetragonal phase transition, and exchange interaction between the 4f orbitals of the Ce3+/Ce4+ and the 3d orbitals of the Fe3+/Fe2+.

show abstract

“…[ 7 ] In addition, due to the existence of a large number of charge centers caused by oxygen deficiency and bismuth evaporation during the solid‐state synthesis process, [ 8 ] the bulk BiFeO 3 is having current leakage problems. [ 9 ] To overcome these problems, substituting rare earth elements into Bi or Fe sites is one of the approaches people adopt. Incidentally, rare earth doping not only improves the phase stability of BiFeO 3 [ 10–12 ] but also improves their magnetic behavior significantly.…”

Section: Introductionmentioning

confidence: 99%

Elastic and Attenuation Studies of Some Rare Earth Substituted Multiferroic Bismuth Ferrites

Sagar

Kumar

Reddy³

2021

Physica Status Solidi (b)

View full text Add to dashboard Cite

A series of rare earth substituted bismuth ferrites are prepared without any detectable impurity phase, by the solid‐state reaction method. The structural characterization of the samples is conducted using X‐ray diffraction (XRD) and bulk density studies. Later, the ultrasonic longitudinal (Vl) and shear wave (Vs) velocities are measured by the pulse transmission technique and using these values, the elastic moduli are calculated. As the materials are porous, zero porous elastic moduli have been computed using Hasselmann and Fulrath model. It is observed that the elastic moduli of samples are found to increase continuously with decreasing of ionic radii of the substituted element and the observed behavior is explained qualitatively. Finally, the attenuation coefficient values of all the samples are also calculated and are found to increase with decreasing of ionic radii of the rare earth substituted ion.

show abstract

The effect of Nd and Zr co-substitution on structural, magnetic and photocatalytic properties of Bi1-xNdxFe1-xZrxO3 nanoparticles

Cited by 34 publications

References 56 publications

Comparing Catalytic Activity of MgMnO3 and SrMnO3 Nanocatalyst for Synthesis of Polyhydroquinoline and New Derivatives via Hantzsch Reaction

Comparing Catalytic Activity of MgMnO3 and SrMnO3 Nanocatalyst for Synthesis of Polyhydroquinoline and New Derivatives via Hantzsch Reaction

Hydrothermal Synthesis of Ce/Zr co-substituted BiFeO3: R3c-to-P4mm Phase Transition and Enhanced Room Temperature Ferromagnetism

Elastic and Attenuation Studies of Some Rare Earth Substituted Multiferroic Bismuth Ferrites

Contact Info

Product

Resources

About