Effect of transition metal doping on multiferroic ordering in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>FeV</mml:mi><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math>

Kumarasiri, Akila; Abdelhamid, Ehab; Dixit, Ambesh; Lawes, G.

doi:10.1103/physrevb.91.014420

Cited by 24 publications

(13 citation statements)

References 30 publications

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“…The observed shifts of the main peaks are indications of the partial replacements of Fe with Cr and Zn to form mixed FeVO 4 crystal instead of the formation of various separate phases. [ 23,32 ] Raman spectra (Figure S2, Supporting Information) of undoped and Cr‐doped samples also confirm the crystalline form of FeVO 4 with no observation of secondary phases. [ 33,34 ]…”

Section: Resultsmentioning

confidence: 72%

“…Several groups have reported the fabrication of FeVO 4 thin films using magnetron cosputtering, spray pyrolysis, dropcasting, and sol-gel methods with reported bandgap energy of 2.0-2.1 eV. [21][22][23][24][25][26][27][28][29][30][31] However, the achieved photocurrents are still very low as compared with the theoretical photocurrent based on the bandgap energy. We have previously identified that the main problem causing the low performance of FeVO 4 films is the poor bulk carrier separation.…”

Section: Introductionmentioning

confidence: 99%

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High Throughput Discovery of Effective Metal Doping in FeVO₄ for Photoelectrochemical Water Splitting

et al. 2020

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FeVO4 is a potential photoanode candidate with favorable bandgap energy for absorbing visible light in the solar spectrum. However, the achieved photocurrents are still much lower than the theoretical photocurrent due to poor bulk carrier separation efficiency. Herein, the aim is to improve FeVO4 charge transport properties by searching for suitable metal doping using combinatorial methods. Thin‐film FeVO4 libraries with different doping ratios of Zn, Ni, Cr, Mo, and W are fabricated on fluorine doped tin oxide substrates using combinatorial inkjet printing and their photoelectrochemical properties screened using photoscanning droplet cell. Mo and W doping show higher current density compared with undoped FeVO4; whereas the photocurrent decreases for Ni‐ and Zn‐doped samples. The best photocurrent is achieved with 7% doping ratio of Cr. Cr is discovered as a promising dopant for the first time, which is more effective than reported Mo or W for FeVO4 photoanode. The replacement of Cr3+ to Fe3+ in FeVO4 crystal lattice helps to mainly improve the catalytic activity for charge transfer, which results in the enhancement of photoresponse of the FeVO4 photoanode.

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Section: Resultsmentioning

confidence: 72%

Section: Introductionmentioning

confidence: 99%

High Throughput Discovery of Effective Metal Doping in FeVO₄ for Photoelectrochemical Water Splitting

et al. 2020

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“…AB O 4 -type oxides (where A = Cr, Fe, In, Ti, Tl; B = As, P, V) are of interest due to their wide physical properties relevant to the photovoltaic cells for solar energy utilization, catalysts for water splitting, electrolyte for lithium-ion batteries, gas sensors, etc. − Furthermore, such materials are known to exhibit structural diversity depending on the nature and ionic radius of the A site cation as well as external parameters like pressure and/or temperature. ,− The primary physical properties of such materials are originated from the d -electrons of the transition metal ions, while the active participation of the tetrahedral rigid groups of B O 4 has less influence on the physical properties. This is because they are isolated structure fragments which serve as bridges between the polyhedra of transition metal ions. − ,− ,, Besides, the vanadates of the Fe 3+ and Cr 3+ have attracted studies under ambient condition in order to understand the diverse properties ,,,,− and structures formed under different preparation conditions. − In an earlier study, the structural properties of orthorhombic CrVO 4 -type [space group (SG) Cmcm ] InVO 4 have been extensively studied under pressure, along with the polymorphic transitions to different phases, like an unknown phase and a monoclinic wolframite-type (SG P 2/ c ) phase at higher pressure . Further theoretical investigations revealed that the orthorhombic phase of InVO 4 is likely to transform to wolframite, raspite (SG P 2 1 / a ), and AgMnO 4 -type (SG P 2 1 / n ) structure under pressure, whereas, at a lower pressure, the formation of α-MnMoO 4 -type (SG C 2/ m ) may be observed .…”

Section: Introductionmentioning

confidence: 99%

Stability of FeVO₄ under Pressure: An X-ray Diffraction and First-Principles Study

et al. 2018

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The high-pressure behavior of the crystalline structure FeVO has been studied by means of X-ray diffraction using a diamond-anvil cell and first-principles calculations. The experiments were carried out up to a pressure of 12.3 GPa, until now the highest pressure reached to study an FeVO compound. High-pressure X-ray diffraction measurements show that the triclinic P1̅ (FeVO-I) phase remains stable up to ≈3 GPa; then a first-order phase transition to a new monoclinic polymorph of FeVO (FeVO-II') with space group C2/ m is observed, having an α-MnMoO-type structure. A second first-order phase transition is observed around 5 GPa toward the monoclinic ( P2/ c) wolframite-type FeVO-IV structure, which is stable up to 12.3 GPa in coexistence with FeVO-II'. The unit cell volume reductions for the first and second phase transitions are Δ V = -8.5% and -13.1%. It was observed that phase transitions are irreversible and both high-pressure phases remain stable once the pressure is released. Calculations were performed at the level of the generalized gradient approximation plus Hubbard correction (GGA+ U) and with the hybrid Heyd-Scuseria-Ernzerhof (HSE06) exchange-correlation functional in order to have a good representation of the pressure behavior of FeVO. We found that theoretical results follow the pressure evolution of structural parameters of FeVO, in good agreement with the experimental results. Also, we analyze FeVO-II (orthorhombic Cmcm, CrVO-type structure) and -III (orthorhombic Pbcn, α-PbO-type structure) phases and compare our results with the literature. Going beyond the experimental results, we study some possible post-wolframite phases reported for other compounds and we found a phase transition for FeVO-IV to raspite (monoclinic P2/ c) type structure (FeVO-V) at 36 GPa (Δ V = -8.1%) and a further phase transition to the AgMnO-type (monoclinic P2/ c) structure (FeVO-VI) at 66.5 GPa (Δ V = -3.7%), similar to the phase transition sequence reported for InVO.

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“…6 There is also a detailed report on the transition metal doped FeVO 4 , in which the magnetic ordering does not change no matter it is magnetic doping nor nonmagnetic doping, and the ferroelectric ordering is even kept at a big doping rate. 42 The nonmagnetic doping on frustrated Ni 3 V 2 O 8 only plays a dilution effect on the magnetic structure. 43 The magnetic Cu doping on Ni 3 V 2 O 8 , however, can suppress the frustrated magnetic ordering and help to develop a possible non-frustrated ferromagnetic ordering when the doping rate is higher than 0.1.…”

Section: A)mentioning

confidence: 99%

Collapse and reappearance of magnetic orderings in spin frustrated TbMnO3 induced by Fe substitution

Hong

Yue

Wang

et al. 2016

Applied Physics Letters

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We studied the temperature dependent magnetic phase evolution in spin frustrated TbMnO3 affected by Fe doping via powder neutron diffraction. With the introduction of Fe (10% and 20%), the long range incommensurate magnetic orderings collapse. When the Fe content is increased to 30%, a long-range antiferromagnetic ordering develops, while a spin reorientation transition is found near 35 K from a canted G-type antiferromagnetic ordering to a collinear G-type antiferromagnetic ordering. This work demonstrates the complex magnetic interactions existing in transition metal oxides, which helps to understand the frustrated spin states in other similar systems and design magnetic materials as well.

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Effect of transition metal doping on multiferroic ordering inFeVO4

Cited by 24 publications

References 30 publications

High Throughput Discovery of Effective Metal Doping in FeVO₄ for Photoelectrochemical Water Splitting

High Throughput Discovery of Effective Metal Doping in FeVO₄ for Photoelectrochemical Water Splitting

Stability of FeVO₄ under Pressure: An X-ray Diffraction and First-Principles Study

Collapse and reappearance of magnetic orderings in spin frustrated TbMnO3 induced by Fe substitution

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Effect of transition metal doping on multiferroic ordering inFeVO4

Cited by 24 publications

References 30 publications

High Throughput Discovery of Effective Metal Doping in FeVO4 for Photoelectrochemical Water Splitting

High Throughput Discovery of Effective Metal Doping in FeVO4 for Photoelectrochemical Water Splitting

Stability of FeVO4 under Pressure: An X-ray Diffraction and First-Principles Study

Collapse and reappearance of magnetic orderings in spin frustrated TbMnO3 induced by Fe substitution

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Product

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High Throughput Discovery of Effective Metal Doping in FeVO₄ for Photoelectrochemical Water Splitting

High Throughput Discovery of Effective Metal Doping in FeVO₄ for Photoelectrochemical Water Splitting

Stability of FeVO₄ under Pressure: An X-ray Diffraction and First-Principles Study