Structural Characterization of Sr Doped LaFeO3 Thin Films Prepared By Pulsed Electron Deposition Method

Cyza, A.; Kopia, Agnieszka; Cieniek, Łukasz; Kusiński, J.

doi:10.1016/j.matpr.2016.06.017

Cited by 24 publications

(9 citation statements)

References 20 publications

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“…These results were found to be contradictory, especially because Sr 2+ ionic radius (0.144 nm) is larger than La 3+ ionic radius (0.136 nm). This can be explained by the fact that as Sr 2+ concentration increases, Fe 3+ (ionic radius-0.0645 nm) gets oxidized to Fe 4+ (ionic radius -0.0585 nm) so that the electrically neutral nature of the whole compound is preserved [2]. Interestingly, as the Fe 4+ proportion of the compound increases, the number of covalent interactions between Fe and O ions increase.…”

Section: Xrd Analysismentioning

confidence: 99%

“…The substitution of La 2+ ion by Sr 2+ ion causes the transformation of certain fraction of Fe 3+ to Fe 4+ and the appearance of oxygen vacancies [36]. This can be explained by the fact that as Sr 2+ concentration increases, Fe 3+ (ionic radius -0.0645 nm) gets oxidized to Fe 4+ (ionic radius -0.0585 nm) so that the electrically neutral nature of the whole compound is maintained [2]. Another reason is that Sr 2+ ions decreases the grain size and increases the spin magnetic moment of the surface, so that the magnetic properties of the samples are improved [26,33].…”

Section: Structures and Grain Sizesmentioning

confidence: 99%

“…Perovskite-type (ABO3) rare-earth metal oxide [1,2] is a kind of new inorganic non-metal material that possesses unique physical and chemical properties. Lanthanum ferrite composite oxide nanopowder (LaFeO3) are nanoscale particles of a material [3,4], which possess unique magnetic, optical and electrical properties, that can be attributed to the congregation of multifactorial effects, such as small size effect, surface effect [5,6].…”

Section: Introduction mentioning

confidence: 99%

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Microstructure and Magnetic Studies of La1-xSrxFeO3 Nano Particles Fabricated by the Citrate Sol-Gel Method

Yang¹,

Yang²,

Lin³

et al. 2019

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The paper reports the use the sol-gel auto-combustion method for the preparation of nanocrystalline La1-xSrxFeO3 (x = 0¸0.7). The physical and chemical properties, microstructure, morphology and magnetic properties of the particles thus formed were studied. The X-ray diffraction (XRD) results indicated that Sr2+ instead of perovskite La are attributed to the lattice forming solid solution La1-xSrxFeO3, which has single orthogonal perovskite structure, space group Pnma, and does not show any impurity peaks. Fourier-transform infrared (FT-IR) spectroscopy confirmed the presence of Fe-O-Fe bond antisymmetric stretching vibration of FeO6 regular octahedron. The scanning electron microscope (SEM) analysis showed that introduction of Sr2+ ions can inhibit the growth of size of the particles thereby forming particles with spherical shape and better dispersion properties. The magnetic properties of the sample showed that with increase in Sr2+ ion concentration leads to increase in sample’s magnetism. DOI: http://dx.doi.org/10.5755/j01.ms.25.3.19455

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Section: Xrd Analysismentioning

confidence: 99%

Section: Structures and Grain Sizesmentioning

confidence: 99%

Section: Introduction mentioning

confidence: 99%

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Microstructure and Magnetic Studies of La1-xSrxFeO3 Nano Particles Fabricated by the Citrate Sol-Gel Method

Yang¹,

Yang²,

Lin³

et al. 2019

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“…Perovskite-type oxides with an ABO 3 perovskite structure (A: alkali metal cations or alkaline-earth metal; B: transition metal cations) has been widely used as raw material for gas sensor for it has high temperature stability and selectivity to different gases 6,7,8 . The example of perovskite-type oxides is lanthanum ferrite (LaFeO 3 ) which is derived from synthesis of La 2 O 3 and Fe 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Al2O3-Doped LaFeO3 Thick Film Ceramics for Ethanol Gas Sensing Application

Suhendi¹,

Lidiawati²,

Syarif³

et al. 2019

Orient. J. Chem

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Preparation and characterization of Al 2 O 3 -dopped LaFeO 3 thick film ceramics for ethanol gas sensor applications has been conducted. LaFeO 3 ceramics were made by co-precipitation method with doping variation of Al 2 O 3 0% and 3.75% mole of the main ingredients LaFeO 3 (La 2 O 3 and Fe 2 O 3 ). Screen printing technique was employed to make thick film ceramics of LaFeO 3 and Al 2 O 3 -dopped LaFeO 3 . The ceramics were calcined at temperature of 60 0 C. The analysis results of the characteristics of crystals using X-Ray Difraction (XRD) showed that the made ceramics made had cubic phase with a lattice parameter a=b=c=39.52nm. The addition of 3.75% mole of Al 2 O 3 did not change the crystal phase and lattice parameter values of LaFeO 3 . The crystallite size of LaFeO 3 was 52.17nm while the crystallite size of Al 2 O 3 -doped LaFeO 3 was 44.52nm. The analysis results of morphological structure ceramics of LaFeO 3 and Al 2 O 3 -doped LaFeO 3 using Scanning Electron Microscopy (SEM) possessed a grain size of each 0:40 μm and 0.25μm. The electrical characterization results of LaFeO 3 thick film ceramics indicated the sensitivity of the sensor increased along with the addition of ethanol gas concentration. The maximum sensitivity value of LaFeO 3 thick film ceramics ceramic thick film LaFeO 3 and Al 2 O 3 -doped LaFeO 3 at 300ppm was 4.34 at 330 0 C and 6.08 at 350 0 C. The thick film ceramics with the addition of 3.75% mole of Al 2 O 3 has a higher sensitivity and potential to be used as ethanol gas sensor.

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“…The effect of Sr doping in LFO, that is, La 1− x Sr x FeO 3 at different concentrations ( x = 0, 0.1, 0.2) has also been analyzed using pulsed electron deposition. [ 12 ] They found that surface of the formed compound has increased gas sensing property. La Ma Sy et al.…”

Section: Introductionmentioning

confidence: 99%

Evincing Structural, Electronic, and Magnetic Attributes of LaFe_0.5A_0.5O₃ (A = Co, Cr, and Ti): DFT‐GGA Recapitulation

Tariq

Mubarak

Mahmood

et al. 2020

Crystal Research and Technology

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In this article, density functional theory studies are being performed on LaFe0.5A0.5O3 (A = Co, Cr, and Ti) (LFAO). The structural stability of LFAO is inspected using ground state optimization, and enthalpy of formation. The results unveil that LFAO is a ferromagnetic half metallic compound. The calculated magnetic moments, Curie temperature, and electronic band gap are found to change with substitution atoms. All these attributes are explained in detail using DOS and Fermi surface analysis. The results match well with the available literature. The Seebeck coefficient, electrical and thermal conductivity with respect to a time constant are computed using BoltzTrap code. The present dopant compounds show p‐type character with a hole charge carrier. It is expected that studied compounds can be useful for novel spintronic and thermoelectric applications.

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Structural Characterization of Sr Doped LaFeO3 Thin Films Prepared By Pulsed Electron Deposition Method

Cited by 24 publications

References 20 publications

Microstructure and Magnetic Studies of La1-xSrxFeO3 Nano Particles Fabricated by the Citrate Sol-Gel Method

Microstructure and Magnetic Studies of La1-xSrxFeO3 Nano Particles Fabricated by the Citrate Sol-Gel Method

Synthesis and Characterization of Al2O3-Doped LaFeO3 Thick Film Ceramics for Ethanol Gas Sensing Application

Evincing Structural, Electronic, and Magnetic Attributes of LaFe_0.5A_0.5O₃ (A = Co, Cr, and Ti): DFT‐GGA Recapitulation

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Structural Characterization of Sr Doped LaFeO3 Thin Films Prepared By Pulsed Electron Deposition Method

Cited by 24 publications

References 20 publications

Microstructure and Magnetic Studies of La1-xSrxFeO3 Nano Particles Fabricated by the Citrate Sol-Gel Method

Microstructure and Magnetic Studies of La1-xSrxFeO3 Nano Particles Fabricated by the Citrate Sol-Gel Method

Synthesis and Characterization of Al2O3-Doped LaFeO3 Thick Film Ceramics for Ethanol Gas Sensing Application

Evincing Structural, Electronic, and Magnetic Attributes of LaFe0.5A0.5O3 (A = Co, Cr, and Ti): DFT‐GGA Recapitulation

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Product

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Evincing Structural, Electronic, and Magnetic Attributes of LaFe_0.5A_0.5O₃ (A = Co, Cr, and Ti): DFT‐GGA Recapitulation