Effect of pH value on structural and magnetic properties of CuFe<sub>2</sub>O<sub>4</sub> nanoparticles synthesized by low temperature hydrothermal technique

Ramaprasad, T.; Kumar, Rajesh; Naresh, U.; Prakash, Muthuramalingam; Kothandan, D.; Naidu, K. Chandra Babu

doi:10.1088/2053-1591/aad860

Cited by 52 publications

(36 citation statements)

References 10 publications

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“…From this data, it was understood that there was a proportional relationship between average crystallite size and microstrain. This type of observation was also found in the literature [20][21][22][23][24][25][26]. The lattice constants were evaluated and presented in table 1.…”

Section: Introductionsupporting

confidence: 79%

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: Introductionsupporting

confidence: 79%

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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“…The ZFC curves increase with heating sample and reach to maximum at T B called blocking temperature is higher than room temperature for all samples. If magnetization of FC below T B increases continuously, superparamagnetic state is formed, while the super-spin glass transition shows a very slow increase or a flat nature of the magnetization of FC mode at low temperatures [19]. Thus, the flat nature of the magnetization of FC curve below T B (Fig.3) demonstrates super-spin glass behaviour of CoCe x Dy x Fe 2-2x O 4 .…”

Section: Fig1a Represents Xrd Pattern Of Single Phase Cubic Spinelmentioning

confidence: 92%

Superparamagnetic and photocatalytic activity of CoCe0.02Dy0.02Fe1.96O4 nanoparticles synthesized by citrate-gel autocombustion technique

2019

Biointerface Res Appl Chem

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Mitigating organic pollutants by employing semiconducting materials is considered to be green and sustainable route to tackle the environmental problems. Herein, citrate-gel autocombustion method was adopted to synthesize Ce and Dy doped CoFe2O4 and characterized by various analytical techniques. The efficacy of prepared CoCexDyxFe2-2xO4 (x=0-0.04) samples were tested for degradation of Methylene blue (MB) under visible light irradiation. The photocatalytic efficiency of CoCe0.02Dy0.02Fe1.96O4 for degradation of MB was found to be larger than pure CoFe2O4, Degussa P25 and other modified CoFe2O4. The enhanced photocatalytic activity was attributed to improved charge separation and visible light utilization by Ce and Dy into CoFe2O4 system. The super-spin glass behaviour of CoCexDyxFe2-2xO4 confirmed from flat nature of magnetization of FC curve below TB.

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“…In other words, one can treat it as piling up behavior of nanoparticles on top of each other. The magnetic interactions among nanoparticles were responsible for the observed agglomeration behavior [26][27][28][29][30]. Latter, the average particle size was found to be of order 18-43 nm.…”

Section: Surface Morphologymentioning

confidence: 99%

Effect of chromium on structural, morphological and electrical properties of lithium ferrite nanoparticles

2019

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The Li 0.5 Fe 2.5−x Cr x O 4 (x = 0.0-1.0) nanoparticles were prepared by the citrate gel autocombustion method. The diffraction spectra were carried out in order to confirm the formation of the single phase cubic spinel structure. The lattice parameter was noted to be decreasing from 8.433 to 8.381 Å with increase in Cr-content from 0.0 to 1.0. The morphology was analyzed using scanning electron microscopy and transmission electron microscopy. The achieved results revealed that the particles were almost spherical in shape. Further, the dc-electrical conductivity (σ dc ) of nanoferrites was described as a function of composition and temperature. In addition, the dielectric properties such as dielectric constant (ε′) and dielectric loss (tan δ) were also discussed as a function of frequency at various temperatures.

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Effect of pH value on structural and magnetic properties of CuFe₂O₄ nanoparticles synthesized by low temperature hydrothermal technique

Cited by 52 publications

References 10 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

Superparamagnetic and photocatalytic activity of CoCe0.02Dy0.02Fe1.96O4 nanoparticles synthesized by citrate-gel autocombustion technique

Effect of chromium on structural, morphological and electrical properties of lithium ferrite nanoparticles

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Effect of pH value on structural and magnetic properties of CuFe2O4 nanoparticles synthesized by low temperature hydrothermal technique

Cited by 52 publications

References 10 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

Superparamagnetic and photocatalytic activity of CoCe0.02Dy0.02Fe1.96O4 nanoparticles synthesized by citrate-gel autocombustion technique

Effect of chromium on structural, morphological and electrical properties of lithium ferrite nanoparticles

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Effect of pH value on structural and magnetic properties of CuFe₂O₄ nanoparticles synthesized by low temperature hydrothermal technique

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