Improved ferroelectric properties in KBiFe2O5-polymer composite film

Jalaja, M. A.; Dutta, Soma

doi:10.1016/j.ceramint.2019.02.049

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…Furthermore, La doping results in a narrowing of the optical band gap. The ferroelectric properties in composite KBFO-polymer thin films are also enhanced by the incorporation of La, evidenced by a reduction in leakage current and well-saturated polarization hysteresis loops [ 19 ]. This suggests that doping, particularly with elements like Ru and La, serves as a versatile approach to tailor the properties of KBFO, making it adaptable for various applications.…”

Section: Introductionmentioning

confidence: 99%

Multiferroic Properties of Co, Ru, and La Ion Doped KBiFe2O5

Apostolov,

Apostolova,

Wesselinowa

2023

Materials

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The magnetic, electric, dielectric, and optical (band gap) properties of ion doped multiferroic KBiFe2O5 (KBFO) have been systematically investigated utilizing a microscopic model and the Green’s function theory. Doping with Co at the Fe site and Ru at the Bi site induces changes in magnetization, coercive field, and band gap energy. Specifically, an increase in magnetization is observed, while the coercive field and band gap energy decrease. This behavior is attributed to the distinct ionic radii of the doped and host ions, leading to alterations in the exchange interaction constants. The temperature dependence of the polarization P reveals a distinctive kink at the Neel temperature TN, which shifts to higher temperatures with an increase in the applied magnetic field h. Furthermore, doping with Ru and La leads to an increase in polarization. The temperature dependence of the dielectric constant exhibits two peaks at the Neel temperature TN and the Curie temperature TC. Notably, these peaks diminish with increasing frequency. Additionally, the dielectric constant demonstrates a decrease with the rise in the applied magnetic field h. This study sheds light on the intricate interplay between ion doping, structural modifications, and multifunctional properties in KBFO, offering valuable insights into the underlying mechanisms governing its behavior across various physical domains.

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Section: Introductionmentioning

confidence: 99%

Multiferroic Properties of Co, Ru, and La Ion Doped KBiFe2O5

Apostolov,

Apostolova,

Wesselinowa

2023

Materials

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“…The synthesis routes studied most frequently in the literature for KBFO are citrate combustion, [17][18][19] sol-gel, 16,[20][21][22][23][24] solid-state reaction, 14,15,[25][26][27][28] hydrothermal, 1,29,30 and solution combustion. 31 The literature still lacks an understanding of the phase formation, thermal stability, and homogeneity of KBFO powder formed by the polymeric precursor (Pechini) synthesis route.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the thermal stability and optical properties of KBiFe₂O₅perovskite obtained by a polymeric precursor method

Verza

Silva

Morelli

2022

Int J Applied Ceramic Tech

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The solar cells are the most prominent devices to generate energy from sunlight, however, one of the main factors limiting the efficiency of photovoltaic conversion is the recombination of charge carriers in their active layer, which is generated by the inhomogeneity of the material that constitutes this layer. KBiFe2O5 is a perovskite with a high potential to be applied in the active layer of photovoltaic devices, however, it suffers from poor homogeneity during its synthesis, which is caused by the volatilization of K and Bi of its composition and, consequently, leads to the formation of secondary phases, which can sequester the charge carriers and decrease the efficiency of photovoltaic conversion. Thus, our objective is to evaluate the homogeneity of the powders obtained by the polymeric precursor method, its thermal stability until the formation of secondary phases, and the optical properties. With elemental mapping, it was possible to verify that the powder obtained was highly homogeneous and the band gap of 1.74 eV is within the optimal range for applications involving sunlight. Thus, it was possible to verify that this synthesis method generates highly homogeneous powders and at the temperatures employed does not undergo volatilization of K and Bi.

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Polarization induced ferroelectric and magnetic ordering in double-perovskite-based flexible 0–3 composite

Gaikwad¹,

Dash

Sahoo

et al. 2023

J Mater Sci: Mater Electron

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Improved ferroelectric properties in KBiFe2O5-polymer composite film

Cited by 4 publications

References 23 publications

Multiferroic Properties of Co, Ru, and La Ion Doped KBiFe2O5

Multiferroic Properties of Co, Ru, and La Ion Doped KBiFe2O5

Analysis of the thermal stability and optical properties of KBiFe₂O₅perovskite obtained by a polymeric precursor method

Polarization induced ferroelectric and magnetic ordering in double-perovskite-based flexible 0–3 composite

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Improved ferroelectric properties in KBiFe2O5-polymer composite film

Cited by 4 publications

References 23 publications

Multiferroic Properties of Co, Ru, and La Ion Doped KBiFe2O5

Multiferroic Properties of Co, Ru, and La Ion Doped KBiFe2O5

Analysis of the thermal stability and optical properties of KBiFe2O5perovskite obtained by a polymeric precursor method

Polarization induced ferroelectric and magnetic ordering in double-perovskite-based flexible 0–3 composite

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Analysis of the thermal stability and optical properties of KBiFe₂O₅perovskite obtained by a polymeric precursor method