The Effect of Ba Doping on the Structural, Optical, Magnetic, and Dielectric Properties of BiFeO3 Nanoparticles

Manjula, N.; Kumar, K. Sunil; Ramanadha, M.; Rani, Alka; Vijayalakshmi, R.P.

doi:10.1007/s10948-017-4483-9

Cited by 5 publications

(5 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…No evidence of iron in Fe 4+ was obtained, which cancels the probability for an increased M r value due to the presence of Fe 4+ . 35 The superexchange interaction between Fe 3+ and Mn 3+ results in the antiferromagnetic order, while the interaction between Fe 3+ and Mn 4+ has a ferromagnetic character. 84,85 Ba codoping also increases the fraction of Mn 4+ or suppresses Mn 3+ , providing an additional ferromagnetic (low-H c ) contribution to the total magnetization via charge-compensation effects.…”

Section: ■ Discussionmentioning

confidence: 99%

“…In Ba-doped BFO NPs, a structural transition to the Pm 3 m phase has been reported for 30% Ba . It was observed that Ba doping increases the magnetization, which was attributed to the canting of the magnetic moments, − as well as weakening of the AFM interaction and creation of Fe 4+ or oxygen vacancies . However, no proof of these assumptions has been presented so far.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Mn and Ba Codoping on a Magnetic Spin Cycloid of Multiferroic Bismuth Ferrite Nanoparticles

et al. 2020

View full text Add to dashboard Cite

Bismuth ferrite (BFO) is the drosophila of research in multiferroic materials due to its simultaneous magnetic and electric ordering at room temperature. The unfortunate detail is its antiferromagnetic ordering, which practically cancels magnetization and magnetoelectric coupling of the crystals. To induce finite coupling, dopants have been introduced with a certain success so far. Nanoparticles (NPs) can additionally constrain the formation of the magnetic cycloid in BFO due to size confinement. Doping nanoparticles can thus potentially provide a sizeable magnetization of BFO, making applications in computer memories and hyperthermia cancer treatment feasible. We show that the codoping of BFO NPs by Ba and Mn balances the electrochemical equilibrium, reduces the particle size, and shifts the magnetic phase transition to lower temperatures. The ferroelectric properties are retained and the remanent magnetization is increased by 1 order of magnitude: Bi 0.95 Ba 0.05 Fe 0.95 Mn 0.05 O 3 possesses a remanent magnetization of 0.277 Am 2 /kg. Our Mossbauer studies reveal that two effects drive this increase: partial destruction of the spin cycloid due to Mn and increased spin canting due to Ba doping inducing local stress fields. This dopant combination and particular concentration improve the effective magnetization value exceptionally well.

show abstract

Section: ■ Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Mn and Ba Codoping on a Magnetic Spin Cycloid of Multiferroic Bismuth Ferrite Nanoparticles

et al. 2020

View full text Add to dashboard Cite

show abstract

“…ABO 3 type perovskite BFO has been modified by numerous type of element doping by researchers all over the world. 7 In this regard, A site and/or B site doping with Ca 2+ , 8 Ti 4+ , 9 Ba 2+ , 10 (Ba 2+ La 3+ )-Ti 4+ , 11 Ba 2+ -Zr 4+ , 5 Ba 2+ -Nb 5+ , 12 Li + -Nb 5+ , 6 Tb 3+ , 13 La 3+ , 14 Mn 4+ , 15 Ni 2+ , 16 Sm 3+ , 17 Gd 3+ , 18 Eu 3+ , 19 Gd 3+ -Ti 4+ , 20 Nd 3+ , 17 etc. have been extensively studied and different physical and functional parameters have been characterized by several researchers previously.…”

mentioning

confidence: 99%

“…Among the various lower valence ions widely used as dopants in Bi 3+ site, Ba 2+ has shown very prominent improvement of magnetic properties of BFO. 10,[21][22][23] There are a few previous reports where the supreme room temperature magnetoelectic coupling and enhanced magnetic performance of Ba 2+ doped BFO systems have been shown. [21][22][23] Furthermore, this system shows excellent ferroelectric and magnetodielectric performance too.…”

mentioning

confidence: 99%

“…Considering all these facts, Ba 2+ has been chosen as the Bi 3+ site dopant in the present work. Though there are a few reports where Ba 2+ doped BiFeO 3 systems have been studied, 10,[21][22][23] comprehensive structural, vibrational, optical, microstructural, electrical and magnetic characterization in a single work is scarce. Therefore, in the present work, we mainly focus on the study of charge compensation mechanism of Bi 1−x Ba x FeO 3 (x = 0, 0.05, 0.10) system along with detail characterization of above mentioned properties.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Charge Compensation Mechanism and Multifunctional Properties of Bi_1−xBa_xFeO₃ (x = 0, 0.05, 0.1) Ceramics

Sasmal

Sen

2022

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

The charge compensation mechanism of Ba2+ ion doped BiFeO3 (BFO) has been studied here in detail. The most common problem of high leakage current of ceramic BFO was noticeably resolved by significant reduction of charge defects through Ba2+ doping. The leakage current density of Bi1-xBaxFeO3 (x = 0, 0.05, 0.1) was found to be reduced to ~3.13×10-8 A/cm2 for x = 0.1 from a value of 2.26×10-4 A/cm2 for x = 0 at an applied field of 500 V/cm. This reduction of leakage current was caused by the reduction of charge defects which was verified through the X-ray photoelectron spectroscopy. The dielectric and ferroelectric properties of undoped and Ba2+ doped BFO were also studied here explicitly and correlated with charge compensation mechanism. The structural and vibrational characterization proved the phase pure formation and the presence of metal-oxide bonds. The optical characterization showed the reduction in energy band gap with increased Ba2+ doping in BFO (2.18, 1.71 and 1.56 eV for x = 0, 0.05 and 0.1, respectively). Another common problem of BFO, namely low remanent magnetization, was also significantly resolved through Ba2+ doping in it and the strong antiferromagnetic BFO started showing weak ferromagnetic nature with increased doping concentration.

show abstract

A study of the structural, magnetic, hemocompatibility and electrochemical properties of BiFeO3 (BFO)/CoFe2O4− (CFO) nanocomposite

Manonmani¹,

Senthil

Gajendiran

et al. 2019

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

The Effect of Ba Doping on the Structural, Optical, Magnetic, and Dielectric Properties of BiFeO3 Nanoparticles

Cited by 5 publications

References 43 publications

Effect of Mn and Ba Codoping on a Magnetic Spin Cycloid of Multiferroic Bismuth Ferrite Nanoparticles

Effect of Mn and Ba Codoping on a Magnetic Spin Cycloid of Multiferroic Bismuth Ferrite Nanoparticles

Charge Compensation Mechanism and Multifunctional Properties of Bi_1−xBa_xFeO₃ (x = 0, 0.05, 0.1) Ceramics

A study of the structural, magnetic, hemocompatibility and electrochemical properties of BiFeO3 (BFO)/CoFe2O4− (CFO) nanocomposite

Contact Info

Product

Resources

About

The Effect of Ba Doping on the Structural, Optical, Magnetic, and Dielectric Properties of BiFeO3 Nanoparticles

Cited by 5 publications

References 43 publications

Effect of Mn and Ba Codoping on a Magnetic Spin Cycloid of Multiferroic Bismuth Ferrite Nanoparticles

Effect of Mn and Ba Codoping on a Magnetic Spin Cycloid of Multiferroic Bismuth Ferrite Nanoparticles

Charge Compensation Mechanism and Multifunctional Properties of Bi1−xBaxFeO3 (x = 0, 0.05, 0.1) Ceramics

A study of the structural, magnetic, hemocompatibility and electrochemical properties of BiFeO3 (BFO)/CoFe2O4− (CFO) nanocomposite

Contact Info

Product

Resources

About

Charge Compensation Mechanism and Multifunctional Properties of Bi_1−xBa_xFeO₃ (x = 0, 0.05, 0.1) Ceramics