Structural, electrical, and multiferroic characteristics of lead-free multiferroic: Bi(Co0.5Ti0.5)O3–BiFeO3 solid solution

Kumar, Nitin; Shukla, Alok; Kumar, Nripesh; Choudhary, R. N. P.; Kumar, A. Sendil

doi:10.1039/c8ra02306a

Cited by 68 publications

(19 citation statements)

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“…, electrode polarization, ion hopping rate, and electrical and space charge relaxation processes of the samples at various frequencies and temperatures. 48,49 It is a powerful tool than impedance spectroscopy regarding the distinction between electrode polarization and grain boundary conductivity. 50 Fig.…”

Section: Methodsmentioning

confidence: 99%

An effective strategy for the development of multiferroic composite nanostructures with enhanced magnetoelectric coupling performance: a perovskite–spinel approach

2021

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Section: Methodsmentioning

confidence: 99%

An effective strategy for the development of multiferroic composite nanostructures with enhanced magnetoelectric coupling performance: a perovskite–spinel approach

2021

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“…The BiFeO 3 is a rhombohedrally distorted perovskite material, which means that the ferroelectric polarization can have orientation along the four pseudo-cubic diagonals (<111>) [35][36][37][38]. The largest relative displacements are those of Bi relative to O, consistent with a stereochemically active Bi lone pair that might to induce ferroelectricity of BiFeO 3 .…”

Section: Ferroelectric Behavior Of Bifeomentioning

confidence: 99%

“…The piezoelectric hysteresis loop shows a remanent out-of-plane piezoelectric coefficient (d 33 ) value 70 pm V À1 , representing the piezoresponse of the film in the fully clamped state. [37]. As the value of dielectric permittivity decreases upon increasing frequency, its nature could be described by Koop's hypothesis and Maxwell-Wagner mechanism.…”

Section: Ferroelectric Polarization Of Pb Doped Bifeo 3 Nanoparticlesmentioning

confidence: 99%

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Synthesis and Characterization of Multiferroic BiFeO₃for Data Storage

Verma¹

2020

Bismuth - Fundamentals and Optoelectronic Applications

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Multiferroic BiFeO3 deals with spintronic devices involved spin-charge processes and applicable in new non-volatile memory devices to store information for computing performance and the magnetic random access memories storage. Since multiferroic leads to the new generation memory devices for which the data can be written electrically and read magnetically. The main advantage of present study of multiferroic BiFeO3 is that to observe magnetoelectric effects at room temperature. The nanostructural growth (for both size and shape) of BiFeO3 may depend on the selection of appropriate synthesis route, reaction conditions and heating processes. In pure BiFeO3, the ferroelectricity is induced by 6s2 lone-pair electrons of Bi3+ ions and the G-type antiferromagnetic ordering resulting from Fe3+ spins order of cycloidal (62-64 nm wavelength) occurred below Neel temperature, TN = 640 K. The multiferroicity of BiFeO3 is disappeared due to factors such as impurity phases, leakage current and low value of magnetization. Therefore, to overcome such factors to get multiferroic enhancement in BiFeO3, there are different possible ways like changes dopant ions and their concentrations, BiFeO3 composites as well as thin films especially multilayers.

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“…The development of ecofriendly/lead-free multiferroic materials has additional advantages over environment concerned as well as health issues of human beings. Some toxicfree materials are now considered for electronic devices including information storage media, actuators, spintronics, transducers, sensors and optoelectronic devices [1][2][3][4][5]. Among most of the developed single-phase multiferroics, bismuth ferrite (BiFeO 3 referred hereafter BFO) is found the much more useful material which has both magnetic and ferroelectric characteristics at or above room temperature.…”

Section: Introductionmentioning

confidence: 99%

Structural, dielectric, impedance and ferroelectric properties of lead-free Bi(Fe0.85Dy0.15)O3 ceramic

Thansanga

Shukla

Kumar

et al. 2021

J Mater Sci: Mater Electron

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Nowadays, several research groups are extensively trying to develop by synthesizing and characterizing single/co-doped single-phase bismuth ferrite (BFO) in order to get a highly efficient eco-friendly multifunctional devices. In this process, this report is an attempt to provide the detailed studies of structural, dielectric, impedance and ferroelectric properties of Bi(Fe 0.85 Dy 0.15 )O 3 ceramic fabricated via the solid-state reaction method. Analysis of X-ray diffraction (XRD) data confirms a single phase of orthorhombic symmetry. The average crystallite (particle) size is found to be in the order of * 41 nm. The field emission scanning electron microscopy (FE-SEM) spectrum shows a homogeneous grain distribution of the sample. The elemental composition examined by means of energy dispersive X-ray spectroscopy (EDXS) shows the existence of constituent elements of the sample. The electrical measurements and analysis, carried out using a computer-controlled phase sensitive multimeter (PSM) in a frequency range of 1 kHz-1 MHz at different sets of temperature (25-325 °C), provide many interesting features to explain further conduction mechanism. The dielectric analysis exhibits high value of dielectric constant (e r ) and small value of dielectric loss (tand). Due to the effect of electronic and space charge polarization, the e r value falls with an increasing frequency. The frequency-temperature dependence of impedance and electrical modulus analysis reveals the presence of semiconductor nature and non-Debye type of relaxation process in the sample. The analysis of ac-conductivity (r ac ) with respect to frequency and temperature obeys the universal Jonscher's power law. The electric polarization study shows an enhancement in ferroelectric property of the material. Hence, based on the significant enhancement in electrical and ferroelectric properties of the Bi(Fe 0.85 Dy 0.15 )O 3 material, the material may be considered for some applications.

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Structural, electrical, and multiferroic characteristics of lead-free multiferroic: Bi(Co_0.5Ti_0.5)O₃–BiFeO₃ solid solution

Abstract: A solid solution of bismuth cobalt titanate [Bi(Co0.5Ti0.5)O3] and bismuth ferrite (BiFeO3) with a composition Bi(Co0.40Ti0.40Fe0.20)O3 (abbreviated as BCTF80/20) was synthesized via a cost effective solid-state technique.

Cited by 68 publications

References 67 publications

An effective strategy for the development of multiferroic composite nanostructures with enhanced magnetoelectric coupling performance: a perovskite–spinel approach

An effective strategy for the development of multiferroic composite nanostructures with enhanced magnetoelectric coupling performance: a perovskite–spinel approach

Synthesis and Characterization of Multiferroic BiFeO₃for Data Storage

Structural, dielectric, impedance and ferroelectric properties of lead-free Bi(Fe0.85Dy0.15)O3 ceramic

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Structural, electrical, and multiferroic characteristics of lead-free multiferroic: Bi(Co0.5Ti0.5)O3–BiFeO3 solid solution

Abstract: A solid solution of bismuth cobalt titanate [Bi(Co0.5Ti0.5)O3] and bismuth ferrite (BiFeO3) with a composition Bi(Co0.40Ti0.40Fe0.20)O3 (abbreviated as BCTF80/20) was synthesized via a cost effective solid-state technique.

Cited by 68 publications

References 67 publications

An effective strategy for the development of multiferroic composite nanostructures with enhanced magnetoelectric coupling performance: a perovskite–spinel approach

An effective strategy for the development of multiferroic composite nanostructures with enhanced magnetoelectric coupling performance: a perovskite–spinel approach

Synthesis and Characterization of Multiferroic BiFeO3for Data Storage

Structural, dielectric, impedance and ferroelectric properties of lead-free Bi(Fe0.85Dy0.15)O3 ceramic

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Structural, electrical, and multiferroic characteristics of lead-free multiferroic: Bi(Co_0.5Ti_0.5)O₃–BiFeO₃ solid solution

Synthesis and Characterization of Multiferroic BiFeO₃for Data Storage