Structural, optical and magnetic studies of (Y, Co) co-substituted BiFeO3 thin films

Kuang, Daihong; Tang, Peixiao; Wu, Xiaohang; Yang, Shenghong; Ding, Xidong; Zhang, Yueli

doi:10.1016/j.jallcom.2016.02.081

Cited by 29 publications

(14 citation statements)

References 46 publications

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“…Notably, this reduced value is much smaller than the previously reported values for both undoped and doped BFO to the best of our knowledge [5,[9][10][11][12]. [26,27].…”

Section: Resultscontrasting

confidence: 64%

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Saturation magnetization and band gap tuning in BiFeO3 nanoparticles via co-substitution of Gd and Mn

Hasan

Basith

Zubair

et al. 2016

Journal of Alloys and Compounds

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In this investigation, Gd and Mn co-doped Bi 0.85 Gd 0.15 Fe 1-x Mn x O 3 (x=0.0-0.15) nanoparticles have been prepared to report the influence of co-substitution on their structural, optical, magnetic and electrical properties. Due to simultaneous substitution of Gd and Mn in BiFeO 3 , the crystal structure has been modified from rhombohedral (R3c) to orthorhombic (Pn2 1 a) and the Fe-O-Fe bond angle and Fe-O bond length have been changed. For Mn doping up to 10% in Bi 0.85 Gd 0.15 Fe 1-x Mn x O 3 nanoparticles, the saturation magnetization (M s ) has been enhanced significantly, however, for a further increase of doping up to 15 %, the M s has started to reduce again. The co-substitution of Gd and Mn in BiFeO 3 nanoparticles also demonstrates a strong reduction in the optical band gap energy and electrical resistivity compared to that of undoped BiFeO 3 .

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“…Notably, this reduced value is much smaller than the previously reported values for both undoped and doped BFO to the best of our knowledge [5,[9][10][11][12]. [26,27].…”

Section: Resultscontrasting

confidence: 64%

“…Zhou et al have reported that saturation magnetization and optical band gap increases in Sm and Mn co-doped BFO [9]. Similar increase in optical band gap is also reported for Y and Co co-doping of BFO [10]. Whereas, Kumar et al have demonstrated that Ca and Ti co-doping reduces optical band gap of BFO [11].…”

mentioning

confidence: 65%

Saturation magnetization and band gap tuning in BiFeO3 nanoparticles via co-substitution of Gd and Mn

Hasan

Basith

Zubair

et al. 2016

Journal of Alloys and Compounds

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“…Several efforts have also been carried out to suppress the leakage current density by partial substitution of rare earth (Ho, Nd, La etc) or alkaline metal ions (Ca 2+ , Sr 2+ , and Ba 2+ ) at A‐site (Bi‐site). Also, the structural, optical, and magnetic behaviours have been improved effectively by the substitution of transition metal ions, for example, Ni, Co, and Mn at B‐sites (Fe‐site). Besides, there are other reports on the doping of transition or rare earth metal ions on both A and B‐sites by different techniques to reduce leakage current density as well as for improving the ferroelectric, ferromagnetic, and multiferroic properties of BFO nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Structural, dielectric and magnetic domains properties of Mn‐doped BiFeO₃ materials

Awasthi

Asokan

Das

2020

Int J Applied Ceramic Tech

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The pure and Mn-doped BiFe 1−x Mn x O 3 (x = 0.00, 0.02, 0.05, 0.10) nanomaterials have been prepared by coprecipitation method. The powder X-ray diffraction pattern analysis shows a structural phase transformation from rhombohedral to orthorhombic, as Mn content in the doped BiFe 1−x Mn x O 3 increases from x = 0.00 to 0.10. The Raman spectrum analysis of BiFe 1−x Mn x O 3 also confirms structural phase transformation. The average crystallite size was calculated using the Scherrer formula and found to decrease from 100 to 60 nm. The surface structure of interconnecting cubic grain turns into spherical grains via petal-shaped grains with increasing the Mn-doping concentration. The value of dielectric constant at the frequency of 1 MHz increases rapidly from 27.2 to 76.8 whereas the tangent loss (tan δ) increases gradually from 0.26 to 0.55 as the Mn-doping concentration increases from x = 0.00 to 0.10. It reveals the enhancement of ferroelectric behavior and suppression of the leakage current density. The drastic change in the phase image contrast of magnetic force micrographs with increasing Mn-doping concentration in BiFe 1−x Mn x O 3 also indicates the improvement of the ferromagnetism. K E Y W O R D S multiferroic, Raman spectroscopy, surface modifications, X-ray methods

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“…Multiferroic materials exhibiting coexistence and simultaneous coupling of ferroelectricity and ferromagnetism have recently attracted considerable attention due to their potential applications and attractive physical phenomena [1,2].As one of representative single-phase multi-ferroics, BiFeO3 (BFO) is known to be the only material that is both ferroelectric (T C~8 30 o C) and anti-ferromagnetic (T N ~ 370 o C) at room temperature, which makes it an excellent possible candidate for practical application [3,4].However, synthesis of a BFO single-phase material is slightly complicated due to some reasons: (i) large leakage current in BFO ceramics is induced by impurities; (ii) non-stoichiometry and oxygen vacancies, which made the material to be difficult to achieve good ferroelectric properties. So the chemical modification by co-substitution of rare-earth or transition metal ions into the BFO crystal was proposed [5,6].…”

Section: Introductionmentioning

confidence: 99%

Structural, Dielectric and magneto-electric properties of La and Co Co-Substituted BiFeO3 Ceramics

Etana¹,

Rao²

2019

IJCTR

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Ceramics have been prepared by sol-gel technique. X-ray diffraction data indicated a phase transition from rhombohedra with space group R3c toorthorhombic structure and decreasing in crystallite size from26.27nm to 21.05nm for x=0.1, 0.15, respectively. The activation energy for electrical conduction has been calculated from the Arrhenius plot using impedance measurement. The activation energy for the grain conduction was found to be increased from 0.286 eV to 0.38eV for x=0.1, 0.15, respectively measured in the temperature ranges (. The vibrating sample magnetometer (VSM)results showed that the saturation magnetization (Ms) increased from 13.24emu/g for x=0.1 to 39.59 emu/g for x=0.15, due to the collapse of spin cycloid structure. The remnant magnetization (Mr) is also correspondingly enhanced from 3.43 emu/g to 11.88emu/g.

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Structural, optical and magnetic studies of (Y, Co) co-substituted BiFeO3 thin films

Cited by 29 publications

References 46 publications

Saturation magnetization and band gap tuning in BiFeO3 nanoparticles via co-substitution of Gd and Mn

Saturation magnetization and band gap tuning in BiFeO3 nanoparticles via co-substitution of Gd and Mn

Structural, dielectric and magnetic domains properties of Mn‐doped BiFeO₃ materials

Structural, Dielectric and magneto-electric properties of La and Co Co-Substituted BiFeO3 Ceramics

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Structural, optical and magnetic studies of (Y, Co) co-substituted BiFeO3 thin films

Cited by 29 publications

References 46 publications

Saturation magnetization and band gap tuning in BiFeO3 nanoparticles via co-substitution of Gd and Mn

Saturation magnetization and band gap tuning in BiFeO3 nanoparticles via co-substitution of Gd and Mn

Structural, dielectric and magnetic domains properties of Mn‐doped BiFeO3 materials

Structural, Dielectric and magneto-electric properties of La and Co Co-Substituted BiFeO3 Ceramics

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Structural, dielectric and magnetic domains properties of Mn‐doped BiFeO₃ materials