Influence of synthesis, dopants, and structure on electrical properties of bismuth ferrite ($$\hbox {BiFeO}_{3}$$)

Nair, Soumya G; Satapathy, Jyotirmayee; Kumar, Nitin

doi:10.1007/s00339-020-04027-x

Cited by 34 publications

(6 citation statements)

References 69 publications

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“…But in the case of manganesecodoped samples, the crystallinity is restricted due to the ionic radii mismatch and the presence of impurity phases. [7,16] As the concentration increases, the samples' porosity appears to reduce, but the grains are not properly formed, leading to higher agglomeration and nonuniformity.…”

Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

“…The ferroelectricity (FE) in BFO is due to the hybridization of 6s 2 lone pair in Bi

^{3 +}

ion and ferromagnetism is due to the 2p orbital of O

^{2 -}

. [ 6,7 ] The mismatch in the antiparallel orientation of spins leads to a weak canting moment. The net magnetic moment arises from this canted antiferromagnetic spin and forms a spin cycloid structure with a long repeat distance of 62–64 nm.…”

Section: Introductionmentioning

confidence: 99%

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Structural, Spectroscopic, and Electrical Properties of (Ho, Mn)‐Codoped Bismuth Ferrites Synthesized Through Solid‐State Route

Nair,

Satapathy

2023

Physica Status Solidi (a)

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Bismuth Ferrites (BiFeO3) are popularly known as BFOs and have a potential application at room temperature in present‐day material science and ceramic industry due to their multiferroic and optical properties. Synthesis methods, temperature treatments, and doping are effective for tuning the structural and multiferroic properties of BFO, among which rare earth metals in Bi‐Site and transition metals in Fe‐site have shown interesting results. This work explores the synthesis and characterizations of (holmium, manganese) co‐doped BFOs where solid state synthesis route and some electrical analyses are the novel studies attempted here. XRD results explain the structural transition from rhombohedral to mixed phase ordering. Grain formation and the elemental concentrations are studied using Scanning Electron Microscopy (SEM), and Energy Dispersive ray spectra (EDAX). Electrical analysis such as dielectric behaviour with respect to frequency and temperature impedance analysis have been studied in detail. Polarization vs. Electric field (PE) hysteresis loop shows the ferroelectric nature of the co‐doped sample with lossy nature and reduced remnant polarization with doping. The dielectric anomalies with frequency and temperature are analyzed in detail and antiferromagnetic transition around Neel temperature is discussed.This article is protected by copyright. All rights reserved.

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Section: Scanning Electron Microscopy (Sem)mentioning

confidence: 99%

“…The ferroelectricity (FE) in BFO is due to the hybridization of 6s 2 lone pair in Bi

^{3 +}

ion and ferromagnetism is due to the 2p orbital of O

^{2 -}

Section: Introductionmentioning

confidence: 99%

Structural, Spectroscopic, and Electrical Properties of (Ho, Mn)‐Codoped Bismuth Ferrites Synthesized Through Solid‐State Route

Nair,

Satapathy

2023

Physica Status Solidi (a)

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“…BCZT ceramics follow the ABO 3 geometry where B position is occupied by Ti 4+ and Zr 4+ ions within the octahedral cage of corner linked network of oxygen octahedra and A position is occupied by Ba 2+ or Ca 2+ ions at the interstices created by oxygen octahedra. 26 Figure 1 shows the unit cell of BCZT. Now when the electric field is applied to this unit cell the Ti 4+ /Zr 4+ ions move to a new position along the direction of the applied field, as shown in Fig.…”

Section: Bczt As a Crystalmentioning

confidence: 99%

“…However, original random orientation can be restored by heating the ceramic material above its curie temperature (T C ) and called thermal deploying. 26…”

Section: Bczt As a Crystalmentioning

confidence: 99%

Review—Modulation of Dielectric, Ferroelectric, and Piezoelectric Properties of Lead-Free BCZT Ceramics by Doping

Verma

Chauhan

Batoo

et al. 2021

ECS J. Solid State Sci. Technol.

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Barium calcium zirconate titanate (BCZT) is one of the most promising lead-free ceramic materials due to its superior electrical properties. BCZT exhibits the existence of morphotropic phase transition (MPB) and polymorphic phase transition (PPT) that are considered as the basis for superior piezoelectric and ferroelectric properties. It also exhibits a high piezoelectric constant (d33 ∼ 620pC/N) and a large remnant polarization (Pr ∼ 17.μC cm −2 ). Due to the presence of a triple point, it also exhibits a high Curie temperature (T C ). These properties make BCZT a fascinating lead-free ceramic material for use in the electrical world. Here, we have studied the effect of doping on the modification of ferroelectric, dielectric, and piezoelectric properties. The modification of electrical properties caused by the change in phase transition temperature, and by structural modification and bulk formation are discussed.

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“…The presence of weak ferromagnetic is may be due to residual moment of the canted Fe 3+ spin structure. Magnetic and electric coupling occurs because of lattice distortion of BiFeO3 [10].…”

Section: Introductionmentioning

confidence: 99%

Structural and Magnetic Properties of (1-x)Ba5PrTi3V7O30-xBiFeO3

Doley

2022

ijasce

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Bismuth Ferrite (BiFeO3) is a single phase Fe- based multiferroic having Perovskite structure. It shows both ferroelectric and ferromagnetism simultaneously in the single material. But the magnetic order is very low due to complex antiferromagnetic order yielding small remnant magnetization. However, Magnetic property could be improved if BiFeO3 mixed with Ba5PrTi3V7O30 having TB-structure. Solid Solution (1-x)Ba5PrTi3V7O30-xBiFeO3 is prepared by using Solid State Reaction technique for different values of x. Pellets are calcined at 750 then sintered at 800 . Basic Crystal qualities and formation of single phase compound is confirmed by the XRD (X-Ray Diffractogram). The crystal structure is more or less constant i.e. Orthorhombic. However, further increase in x changes the crystal structure. For x= 0.7 the system is Rhombohedral in structure. Grain morphology is being analysed by Scanning Electron Microscope (SEM: JOEL-IT300).Surface morphology shows that average grain size range from around 0.75 µm to 2.10 µm. Average grain size is maximum for x = 0.3 and minimum for x=0 (i.e. pure ferroelectric material). Magnetic measurement is done at a wide low temperature range (10-350K) by Physical Property Measurement System (PPMS: Quantum Design, San Diego, USA) Vibrating Sample Magnetometer (VSM). Hysteresis (M-H) loops are measured at room temperature (300K).It shows that the magnetization changes when the value of x changes. Remanence is maximum for x=0.3 and Coercivity is maximum for x=0.7. The material could be suitable to fabricate non volatile magnetic storage memory device.

show abstract

Influence of synthesis, dopants, and structure on electrical properties of bismuth ferrite ($$\hbox {BiFeO}_{3}$$)

Cited by 34 publications

References 69 publications

Structural, Spectroscopic, and Electrical Properties of (Ho, Mn)‐Codoped Bismuth Ferrites Synthesized Through Solid‐State Route

Structural, Spectroscopic, and Electrical Properties of (Ho, Mn)‐Codoped Bismuth Ferrites Synthesized Through Solid‐State Route

Review—Modulation of Dielectric, Ferroelectric, and Piezoelectric Properties of Lead-Free BCZT Ceramics by Doping

Structural and Magnetic Properties of (1-x)Ba5PrTi3V7O30-xBiFeO3

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