Structural, morphological, electrical, impedance and ferroelectric properties of BaO-ZnO-TiO2 ternary system

Naidu, K. Chandra Babu; Reddy, V. N.; Sarmash, T. Sofi; Kothandan, D.; Subbarao, T.; Kumar, N. Suresh

doi:10.1007/s41779-018-0225-0

Cited by 39 publications

(5 citation statements)

References 25 publications

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“…This kind of behavior was noted in the earlier reports [28][29][30][31]. Furthermore, the average grain size (G) was evaluated with the help of linear intercept method (LIM) [32][33][34]. These were noticed to be 85 nm, 53 nm & 52 nm for x=0.2, 0.4 & 0.6 respectively.…”

Section: Surface Morphologysupporting

confidence: 67%

Optical and functional properties of hydrothermally synthesized tetragonal Ba_0.4Cu_0.6−xLa_xTiO₃ (x = 0.2–0.6) nanoparticles

Prakash

Kumar

Naidu

2020

Mater. Res. Express

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Ba 0.4 Cu 0.6−x La x TiO 3 (x=0.2, 0.4 & 0.6) (BCLT) nanoparticles were prepared by hydrothermal method. The x-ray diffraction (XRD) pattern established the existence of tetragonal phases. The nanospheres were observed in the surface morphology of present materials using the transmission electron microscopy (TEM). The optical properties were investigated to confirm the presence of metal oxide bonds as well as the optical band-gap energy of BCLT nanoparticles. The dielectric and impedance parameters were studied as a function of frequency and composition. The Cole-Cole plots were drawn to understand the microstructure and electrical conduction mechanism. In addition, the ferroelectric nature was carried out with the help of polarization versus electric field (P-E) loop tracer. Materials and methodsBa 0.4 Cu 0.6−x La x TiO 3 (x=0.2, 0.4, & 0.6) nanoparticles were synthesized via hydrothermal technique. The flow chart for the preparation of BCLT samples was depicted in figure 1. The starting raw materials of Ba (NO 3 ) 2 .6H 2 O

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Section: Surface Morphologysupporting

confidence: 67%

Optical and functional properties of hydrothermally synthesized tetragonal Ba_0.4Cu_0.6−xLa_xTiO₃ (x = 0.2–0.6) nanoparticles

Prakash

Kumar

Naidu

2020

Mater. Res. Express

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“…This kind of behavior is noted in the earlier reports [14]. Furthermore, the average grain size (G) has been evaluated with the help of linear intercept method (LIM) [15]. These are noticed to be 85 nm, 53 nm & 52 nm for x = 0.2, 0.4 & 0.6 respectively.…”

Section: Methods and Methodology Sample Preparationsupporting

confidence: 64%

Structural, Morphological and Optical and Electrical Properties of Ba0.4Cu0.6-xLaxTiO3 (x = 0.2, 0.4, 0.6) Nanoparticles

2024

IJFMR

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the structural, morphological, optical and electrical properties of Ba0.4Cu0.6-xLaxTiO3 (x = 0.2, 0.4, 0.6) nanoparticles are discussed. It begins with the preparation followed by characterization of the materials. The sample material is synthesized by hydrothermal technique and then the structure of the present sample is confirmed by diffraction pattern and compared with the respective standard JCPDS pattern. In addition, the structural parameters such as the lattice constant (a), average crystallite size (Dp), theoretical density (ρx), porosity (P), dislocation density (ρd) and strain (ε) are evaluated. In this study, morphology is analyzed using the SEM and TEM measurements. The optical properties such as A, B-site wave numbers, force constants and optical band gap energies (Eop) are studied by FTIR and UV-Visible spectrometers respectively. Electric and dielectric properties have been studied over a frequency range of 100 Hz – 1 MHz and in the temperature range from 40oC to 100oC.

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“…In case of Co-Cd nanoferrites, Co 2+ ions preferred to the octahedral sites, Cd 2+ ions to the tetrahedral sites and Fe ions to be both octahedral and tetrahedral sites. The temperature dependence of dcconductivity was plotted using the Arrhenius relation: logσ dc = logσ o -(E a /K B T), where σ dc is the conductivity, σ o is the conductivity at absolute temperature, K B is Boltzmann's constant, and T is the temperature [18]. The present nanoferrites performed kink which can be called the Curie temperature.…”

Section: Xrd Analysismentioning

confidence: 99%

Structural, morphological and electronic properties of cadmium cobalt ferrite nanoparticles

2019

Biointerface Res Appl Chem

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Cadmium cobalt ferrite nanoparticles with a chemical formula of CdxCo1-xFe2O4 (x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5 & 0.6) (CCF) were prepared via the citrate-gel auto combustion method followed by annealing at 773 Kelvin for 4 hrs in air. Further, the samples were characterized for structural, morphological, elemental, functional group, electrical and thermoelectric properties analysis. The X-ray diffraction patterns showed the single phase cubic structure. The crystalline size of the synthesized Co-Cd ferrites nanoparticle is found in the range of 11 to17 nm. In addition, with an increase of Cd content, we noticed that lattice constants (a) and x-ray density (dx) values were increasing from 0.8419 – 0.8496 nm and 5.222 – 5.777 g/c.c., respectively. Morphological properties were examined by scanning electron microscopy (SEM) & Transmission electron microscopy (TEM). The tetrahedral (υ1) and octahedral (υ2) frequencies were observed at around 400 - 600 cm-1. The electric and dielectric properties such as DC-electrical conductivity (σdc), dielectric constant (ε'), dielectric loss (ε") and thermoelectric power parameters were calculated. At a low temperature of 300 K, the samples express the p-type semiconducting nature due to having +ve value of ‘S’ while the same shows –ve value at high temperature suggesting the n-type semiconducting behavior. Moreover, the magnetic Curie-transition temperatures were determined as a function of composition and noted to be decreasing from 753 – 653 K respectively.

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Structural, morphological, electrical, impedance and ferroelectric properties of BaO-ZnO-TiO2 ternary system

Cited by 39 publications

References 25 publications

Optical and functional properties of hydrothermally synthesized tetragonal Ba_0.4Cu_0.6−xLa_xTiO₃ (x = 0.2–0.6) nanoparticles

Optical and functional properties of hydrothermally synthesized tetragonal Ba_0.4Cu_0.6−xLa_xTiO₃ (x = 0.2–0.6) nanoparticles

Structural, Morphological and Optical and Electrical Properties of Ba0.4Cu0.6-xLaxTiO3 (x = 0.2, 0.4, 0.6) Nanoparticles

Structural, morphological and electronic properties of cadmium cobalt ferrite nanoparticles

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Structural, morphological, electrical, impedance and ferroelectric properties of BaO-ZnO-TiO2 ternary system

Cited by 39 publications

References 25 publications

Optical and functional properties of hydrothermally synthesized tetragonal Ba0.4Cu0.6−xLaxTiO3 (x = 0.2–0.6) nanoparticles

Optical and functional properties of hydrothermally synthesized tetragonal Ba0.4Cu0.6−xLaxTiO3 (x = 0.2–0.6) nanoparticles

Structural, Morphological and Optical and Electrical Properties of Ba0.4Cu0.6-xLaxTiO3 (x = 0.2, 0.4, 0.6) Nanoparticles

Structural, morphological and electronic properties of cadmium cobalt ferrite nanoparticles

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Optical and functional properties of hydrothermally synthesized tetragonal Ba_0.4Cu_0.6−xLa_xTiO₃ (x = 0.2–0.6) nanoparticles

Optical and functional properties of hydrothermally synthesized tetragonal Ba_0.4Cu_0.6−xLa_xTiO₃ (x = 0.2–0.6) nanoparticles