Rietveld analysis, enhanced magnetic, dielectric and ferroelectric properties of Gd3+ and Ti4+ co-doped LaFeO3 multiferroic

Bhakta, N.; Mitra, A.; Mallick, A.; Sadhukhan, Sukhendu; Bajorek, A.; Chakrabarti, P.K.

doi:10.1016/j.mseb.2020.114810

Cited by 17 publications

(9 citation statements)

References 43 publications

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“…This means that in the first case, LuFO, we have a tensile strain (J d < J, J 0 d < J 0 , F d < F, R d < R), whereas in the second case, LaFO, there appears a compressive strain (J d > J, J d 0 > J 0 , F d > F, R d > R). Bhakta et al [28] have observed from X-ray analysis in Gd-doped LaFO a decrease of the lattice parameters, that is, there appears a compressive strain. We have calculated the polarization P s for Sm-doped LuFO and LaFO (see Figure 2, curves 1 and 2), respectively.…”

Section: Resultsmentioning

confidence: 99%

“…We observe a similar result also for Gd-or Tb-doped LuFO and LaFO. Recently, Bhakta et al [28] and Kundu et al [29] reported that the ferroelectric properties of Gd-and Sm-doped LaFO, respectively, are enhanced. We calculated P s ðxÞ=P s ðx ¼ 0Þ for Sm-doped LaFO and showed its behavior as an inset in Figure 2.…”

Section: Resultsmentioning

confidence: 99%

“…This means that in the first case, LuFO, we have a tensile strain (

J_{\text{d}} &amp;amp;amp;amp;amp;amp;amp;lt; J

\left(J^{'}\right)_{\text{d}} &amp;amp;amp;amp;amp;amp;amp;lt; J^{'}

F_{\text{d}} &amp;amp;amp;amp;amp;amp;amp;lt; F

R_{\text{d}} &amp;amp;amp;amp;amp;amp;amp;lt; R

), whereas in the second case, LaFO, there appears a compressive strain (

J_{\text{d}} &amp;amp;amp;amp;amp;amp;amp;gt; J

J_{d^{'}} &amp;amp;amp;amp;amp;amp;amp;gt; J^{'}

F_{\text{d}} &amp;amp;amp;amp;amp;amp;amp;gt; F

R_{\text{d}} &amp;amp;amp;amp;amp;amp;amp;gt; R

). Bhakta et al [ 28 ] have observed from X‐ray analysis in Gd‐doped LaFO a decrease of the lattice parameters, that is, there appears a compressive strain. We have calculated the polarization

P_{\text{s}}

for Sm‐doped LuFO and LaFO (see Figure 2 , curves 1 and 2), respectively.…”

Section: Resultsmentioning

confidence: 99%

“…We observe a similar result also for Gd‐ or Tb‐doped LuFO and LaFO. Recently, Bhakta et al [ 28 ] and Kundu et al [ 29 ] reported that the ferroelectric properties of Gd‐ and Sm‐doped LaFO, respectively, are enhanced. We calculated

$P_{\text{s}} \left(\right.

…”

Section: Resultsmentioning

confidence: 99%

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Comparison of the Multiferroic Properties of Ion‐Doped Hexagonal LuFeO₃ and LaFeO₃

Apostolova

Apostolov

Wesselinowa

2023

Physica Status Solidi (b)

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Using a microscopic model, the magnetic and electric properties of pure and ion‐doped (on the Lu or Fe sites) hexagonal LuFeO3 (LuFO) are studied and compared with the properties of ion‐doped LaFeO3 (LaFO). The magnetization increases by Sr and Sc doping which is caused by the strain and the changes of the exchange interaction constants at the doped states. It is observed that by Sm doping of LuFO the polarization decreases, whereas by Sm doping of LaFO, the polarization increases with increasing Sm concentration. By Ir or Co ion doping on the Fe site, the magnetization and the phonon energy increase whereas the bandgap energy decreases. By doping on the Fe sites with the same ion, for example, Sc, there are no differences between LuFO and LaFO. A good agreement with the experimental data is observed. The doping effects can be used for different applications.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…This means that in the first case, LuFO, we have a tensile strain (

J_{\text{d}} &amp;amp;amp;amp;amp;amp;amp;lt; J

\left(J^{'}\right)_{\text{d}} &amp;amp;amp;amp;amp;amp;amp;lt; J^{'}

F_{\text{d}} &amp;amp;amp;amp;amp;amp;amp;lt; F

R_{\text{d}} &amp;amp;amp;amp;amp;amp;amp;lt; R

), whereas in the second case, LaFO, there appears a compressive strain (

J_{\text{d}} &amp;amp;amp;amp;amp;amp;amp;gt; J

J_{d^{'}} &amp;amp;amp;amp;amp;amp;amp;gt; J^{'}

F_{\text{d}} &amp;amp;amp;amp;amp;amp;amp;gt; F

R_{\text{d}} &amp;amp;amp;amp;amp;amp;amp;gt; R

). Bhakta et al [ 28 ] have observed from X‐ray analysis in Gd‐doped LaFO a decrease of the lattice parameters, that is, there appears a compressive strain. We have calculated the polarization

P_{\text{s}}

for Sm‐doped LuFO and LaFO (see Figure 2 , curves 1 and 2), respectively.…”

Section: Resultsmentioning

confidence: 99%

$P_{\text{s}} \left(\right.

…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Comparison of the Multiferroic Properties of Ion‐Doped Hexagonal LuFeO₃ and LaFeO₃

Apostolova

Apostolov

Wesselinowa

2023

Physica Status Solidi (b)

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“…The degree to accommodate dopant elements in LFO is a broad subject and studies on multiple doping effects have been recently reported such as Al and Ti co-doped LFO [18]. Similarly, Bhakta et al [19] have reported more enhanced multiferroic response with Gd and Ti co-doping in LFO.…”

mentioning

confidence: 99%

Elucidating the effect of V_x doped LaFe_1−xO₃ for advanced optical, spintronic, and thermoelectric devices

Mubarak

Tariq

Alsobhi

et al. 2021

Int J of Quantum Chemistry

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In this theoretical work, we perform an investigation to study the influence of V doping in LaFeO 3 (LFO). For V doping, the opted Fe site shows remarkable modifications in the inherited attributes of pristine LFO. We use formation energies and optimizations to explore the ground state structural stability. Electronic properties of stable structures reveal large spin polarization effects with spin-up (metallic) and spin-down (semiconducting) configurations. We observe the highest ferromagnetism for V-25% doping which is a suitable candidate for application in magnetic tunnel junctions.Optical analysis reveals that the studied materials are highly transparent under incident light. All thermoelectric results suggest that the compounds can be categorized as p-type doping. The thermoelectric parameters predict that the present compounds have beneficial thermoelectric industrial applications, especially V 0.25 -LFO and V 0.5 -LFO. We expect that these compounds are suitable functional materials for novel magnetic or spintronic devices and as transparent conducting materials.

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Investigations on the EPR g factors and local structures for the orthorhombic and tetragonal Cu²⁺ centers in Pb[Zr_0.54Ti_0.46]O₃

Huang,

Zhang,

Guo

et al. 2024

Magnetic Reson in Chemistry

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The defect models of the orthorhombical and tetragonal Cu2+ centers in Pb[Zr0.54Ti0.46]O3 are attributed to Cu2+ ions occupying the sixfold coordinated octahedral Ti4+ site with and without charge compensation, respectively. The electron paramagnetic resonance (EPR) g factors gi (i = x, y, z) of the Cu2+ centers in Pb[Zr0.54Ti0.46]O3 are theoretically studied by using the perturbation formulas of a 3d9 ion under orthorhombically and tetragonally elongated octahedra. Based on the calculation, the impurity off‐center displacements are about 0.253 and 0.162 Å for the orthorhombical and tetragonal Cu2+ centers, respectively. Meanwhile, the planar Cu2+–O2− bonds are found to experience the relative variation ΔR (≈0.102 Å) along the a‐ and b‐axes for the orthorhombical Cu2+ center due to the Jahn–Teller (JT) effect. The theoretical EPR g factors based on the above local structures agree well with the observed values.

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Rietveld analysis, enhanced magnetic, dielectric and ferroelectric properties of Gd3+ and Ti4+ co-doped LaFeO3 multiferroic

Cited by 17 publications

References 43 publications

Comparison of the Multiferroic Properties of Ion‐Doped Hexagonal LuFeO₃ and LaFeO₃

Comparison of the Multiferroic Properties of Ion‐Doped Hexagonal LuFeO₃ and LaFeO₃

Elucidating the effect of V_x doped LaFe_1−xO₃ for advanced optical, spintronic, and thermoelectric devices

Investigations on the EPR g factors and local structures for the orthorhombic and tetragonal Cu²⁺ centers in Pb[Zr_0.54Ti_0.46]O₃

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Rietveld analysis, enhanced magnetic, dielectric and ferroelectric properties of Gd3+ and Ti4+ co-doped LaFeO3 multiferroic

Cited by 17 publications

References 43 publications

Comparison of the Multiferroic Properties of Ion‐Doped Hexagonal LuFeO3 and LaFeO3

Comparison of the Multiferroic Properties of Ion‐Doped Hexagonal LuFeO3 and LaFeO3

Elucidating the effect of Vx doped LaFe1−xO3 for advanced optical, spintronic, and thermoelectric devices

Investigations on the EPR g factors and local structures for the orthorhombic and tetragonal Cu2+ centers in Pb[Zr0.54Ti0.46]O3

Contact Info

Product

Resources

About

Comparison of the Multiferroic Properties of Ion‐Doped Hexagonal LuFeO₃ and LaFeO₃

Comparison of the Multiferroic Properties of Ion‐Doped Hexagonal LuFeO₃ and LaFeO₃

Elucidating the effect of V_x doped LaFe_1−xO₃ for advanced optical, spintronic, and thermoelectric devices

Investigations on the EPR g factors and local structures for the orthorhombic and tetragonal Cu²⁺ centers in Pb[Zr_0.54Ti_0.46]O₃