Structural, mechanical and electric properties of La doped BNT-BFO perovskite ceramics

Parida, Rajanikanta Parida; Parida, R.K.; Bhuyan, Rashmi; Parida, S. K.

doi:10.1080/00150193.2020.1853751

Cited by 26 publications

(3 citation statements)

References 27 publications

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“…ErFeO 3 undergoes a transition below 640 K to G-type antiferromagnetism within the Fe sublattice. 21,23,24,26 Studies on single crystals show that the Fe moments are directed along the a-axis with a small canting, leading to a net moment along c. As the temperature is lowered, the Er 3+ RE ions are increasingly polarized antiparallel to the Fe moments, and their effective anisotropy increases. ErFeO 3 undergoes a spin reorientation transition below T SR2 with the Fe spins rotating in the ac plane to lie almost parallel to the c-axis by T SR1 with a net Fe moment now along the a-axis.…”

Section: Lamentioning

confidence: 99%

Limits of Solid Solution and Evolution of Crystal Morphology in (La_1–xRE_x)FeO₃ Perovskites by Low Temperature Hydrothermal Crystallization

et al. 2023

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The crystallization of a new series of A-site substituted lanthanum ferrite materials (La 1– x RE x )FeO 3 was explored by the hydrothermal method at 240 °C, for rare earth (RE) = Nd, Sm, Gd, Ho, Er, Yb, and Y, with 0 ≤ x ≤ 1. The effect of elemental substitution on the morphological, structural, and magnetic properties of the materials was studied using high-resolution powder X-ray diffraction, energy dispersive spectroscopy (EDS) on the scanning electron microscope, Raman spectroscopy, and SQUID magnetometry. If the radius of the La 3+ and the substituent ions is similar, such as for Nd 3+ , Sm 3+ , and Gd 3+ , homogeneous solid solutions are formed, with the orthorhombic GdFeO 3 -type structure, and a continuous evolution of Raman spectra with composition and distinct magnetic behavior from the end members. When the radius difference between substituents and La 3+ is large, such as for Ho 3+ , Er 3+ , Yb 3+ , and Y 3+ , then instead of forming solid solutions, crystallization in separate phases is found. However, low levels of element mixing are found and intergrowths of segregated regions give composite particles. In this case, the Raman spectra and magnetic behavior are characteristic of mixtures of phases, while EDS shows distinctive elemental segregation. A-site replacement induces an evolution in the crystallite shape with an increasing amount of substituent ions and this is most evident for RE = Y from cube-shaped crystals seen for LaFeO 3 to multipodal crystals for (La 1– x Y x )FeO 3 , providing evidence for a phase-separation-driven evolution of morphology.

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Section: Lamentioning

confidence: 99%

Limits of Solid Solution and Evolution of Crystal Morphology in (La_1–xRE_x)FeO₃ Perovskites by Low Temperature Hydrothermal Crystallization

et al. 2023

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“…Bismuth Sodium Titanate is reported to exhibit a weak ferroelectric to relaxor ferroelectric phase transition at approximately 190°C, and a diffuse ferroelectric to paraelectric phase transition at around 320°C. [9][10]. Ferromagnetic material having high value of electric permittivity and nature of plot is non-linear.…”

Section: Originationmentioning

confidence: 99%

Synthesis and characterization of Modified Bismuth ferrite (1-x)BiFeO 3 - x(BiK)Ti/MnO 3 , (x=0.15, 0.20)

Sourav,

Choudhary,

Prasad

2024

Preprint

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In present era main aim of the researchers is to develop lead free material for ferroelectric material device. Ceramics of perovskite compounds were successfully synthesized using a chemical decomposition method, with the composition (1-x) BiFeO3-x(Bi K)TiMnO3, where x was varied at 0.15 and 0.20. The confirmation of compound creation was based on the analysis of Crystelloplotic XRD pattern data. The BKTM 15% exhibits an average grain size of 0.41 µm, while BKTM 20% shows 0.40 µm. Energy-dispersive X-ray analysis detected elements such as Bi, Fe, Na, K, Ti, and Mn. Modulus property exploration revealed non-Debye model relaxation behavior, observed particularly for sensor technology applications. To investigate the relaxation and conduction mechanisms in these samples were conducted at different temperatures and recurrence. Additionally, the scanning electron microscope (SEM) was employed to examine particle allocation and the location of grain boundaries. Impedance spectroscopic studies covered a wide temperature range (300-780K) and a broad recurrence range (103-106 Hz). Complex plane and Impedance scale are semicircular arcs, which related to semiconducting character of the sample.

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“…Moreover, due to the implementation of rigorous environmental legislation, concerns about lead concentration have limited the wide range of applications. [1][2][3]. As a result, the development of new lead-free ceramics is critical.…”

Section: Introductionmentioning

confidence: 99%

Structural and electrical properties of bismuth sodium titanate ceramic

Kuanar

Mohanty²,

Dalai³

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Single-phase lead-free Bi0.5Na0.5TiO3 (BNT) perovskite ferroelectric ceramic was produced using a solid-state reaction method. A detailed investigation of the structural and electrical properties of BNT ceramic is conferred. According to phase analysis employing Rietveld refined X-Ray diffraction, the crystal structure is single phase with rhombohedral (R3C) symmetry. Raman spectra measurement also confirms the rhombohedral structure of BNT by originating numerous peaks from the TiO6 octahedron. The ferroelectric character of the BNT sample was established by a hysteresis loop measurement of polarisation vs electric field (P-E). The remnant polarisation (Pr) and coercive field (Ec) have characteristic values of 1.63 μC/cm2 and 29.91 kV/cm, respectively. The ferroelectric phase change is seen in the temperature-dependent dielectric research, with a transition temperature of 323°C. The compound possessed a low value of tanδ even at a high temperature (500°C) at 1 MHz. The prepared sample exhibited excellent dielectric characteristics from room temperature to high temperatures, making it ideal for various applications.

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Structural, mechanical and electric properties of La doped BNT-BFO perovskite ceramics

Cited by 26 publications

References 27 publications

Limits of Solid Solution and Evolution of Crystal Morphology in (La_1–xRE_x)FeO₃ Perovskites by Low Temperature Hydrothermal Crystallization

Limits of Solid Solution and Evolution of Crystal Morphology in (La_1–xRE_x)FeO₃ Perovskites by Low Temperature Hydrothermal Crystallization

Synthesis and characterization of Modified Bismuth ferrite (1-x)BiFeO 3 - x(BiK)Ti/MnO 3 , (x=0.15, 0.20)

Structural and electrical properties of bismuth sodium titanate ceramic

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Structural, mechanical and electric properties of La doped BNT-BFO perovskite ceramics

Cited by 26 publications

References 27 publications

Limits of Solid Solution and Evolution of Crystal Morphology in (La1–xREx)FeO3 Perovskites by Low Temperature Hydrothermal Crystallization

Limits of Solid Solution and Evolution of Crystal Morphology in (La1–xREx)FeO3 Perovskites by Low Temperature Hydrothermal Crystallization

Synthesis and characterization of Modified Bismuth ferrite (1-x)BiFeO 3 - x(BiK)Ti/MnO 3 , (x=0.15, 0.20)

Structural and electrical properties of bismuth sodium titanate ceramic

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Limits of Solid Solution and Evolution of Crystal Morphology in (La_1–xRE_x)FeO₃ Perovskites by Low Temperature Hydrothermal Crystallization

Limits of Solid Solution and Evolution of Crystal Morphology in (La_1–xRE_x)FeO₃ Perovskites by Low Temperature Hydrothermal Crystallization