Role of Sm3+ dopant in the formation of La(1-x)SmxCrO3 solid state nanoperovskites – Correlation of its augmented physical properties

Sivaprakash, P.; Ananth, Antony; Nagarajan, V.; Parameshwari, R.; Arumugam, S.; Muthu, S. Esakki

doi:10.1016/j.matchemphys.2020.122922

Cited by 17 publications

(3 citation statements)

References 23 publications

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“…The anti-symmetric exchange interaction arises from the interaction of low spin Co (III) with the excited high spin Co (III). This further influences magnetocrystallite anisotropy and reduces the coercive field [ 52 , 53 , 54 , 55 ]. In our previous study of Mn-doped LCO, the RT M-H shows only a paramagnetic state even after incorporation with Mn at the Co site [ 19 ].…”

Section: Resultsmentioning

confidence: 99%

Influence of Te-Incorporated LaCoO3 on Structural, Morphology and Magnetic Properties for Multifunctional Device Applications

Sahadevan

Sivaprakash

Muthu

et al. 2023

IJMS

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A high perovskite activity is sought for use in magnetic applications. In this paper, we present the simple synthesis of (2.5% and 5%) Tellurium-impregnated-LaCoO3 (Te-LCO), Te and LaCoO3 (LCO) by using a ball mill, chemical reduction, and hydrothermal synthesis, respectively. We also explored the structure stability along with the magnetic properties of Te-LCO. Te has a rhombohedral crystal structure, whereas Te-LCO has a hexagonal crystal system. The reconstructed Te was imbued with LCO that was produced by hydrothermal synthesis; as the concentration of the imbuing agent grew, the material became magnetically preferred. According to the X-ray photoelectron spectra, the oxidation state of the cobaltite is one that is magnetically advantageous. As a result of the fact that the creation of oxygen-deficient perovskites has been shown to influence the mixed (Te4+/2−) valence state of the incorporated samples, it is abundantly obvious that this process is of utmost significance. The TEM image confirms the inclusion of Te in LCO. The samples start out in a paramagnetic state (LCO), but when Te is added to the mixture, the magnetic state shifts to a weak ferromagnetic one. It is at this point that hysteresis occurs due to the presence of Te. Despite being doped with Mn in our prior study, rhombohedral LCO retains its paramagnetic characteristic at room temperature (RT). As a result, the purpose of this study was to determine the impacts of RT field dependency of magnetization (M-H) for Te-impregnated LCO in order to improve the magnetic properties of RT because it is a low-cost material for advanced multi-functional and energy applications.

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Section: Resultsmentioning

confidence: 99%

Influence of Te-Incorporated LaCoO3 on Structural, Morphology and Magnetic Properties for Multifunctional Device Applications

Sahadevan

Sivaprakash

Muthu

et al. 2023

IJMS

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“…Controlling ROS levels by employing antioxidants is one of the most effective therapeutic modalities for the management of neurological disorders and cardiovascular diseases [ 14 ]. Liu mentions the new area of antioxidative nanomaterials, which have several benefits over traditional antioxidants, including stability and the ability to scavenge numerous free radicals [ 15 ]. Vindhya reports Nickel-doped CuO nanoparticles have higher antioxidant properties as well as antibacterial activity than pure CuO nanoparticles [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Yttrium doping on antibacterial and antioxidant property of LaTiO3

Prabitha,

Sahadevan,

Madhavan

et al. 2023

Discover Nano

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The advancement of multidrug-resistant bacterial strains and their adverse effects is one of the most significant global health issues. The perovskite nanomaterial with combined antioxidant and antibacterial activities in one molecule has the potential for improved therapeutic solutions. In this work, Yttrium-doped Lanthanum Titanate (LaTi1 −xYxO3, where x = 0, 0.05, and 0.1) was synthesized using auto combustion technique. Excellent crystalline structure with a tetragonal system is revealed by X-ray diffraction analysis (XRD). UV–Visible diffuse reflectance spectroscopy (UV–Vis DRS), Fourier transform infrared (FTIR), and photoluminescence (PL) were used to study its optical characteristics. The field emission scanning electron microscope (FE-SEM) shows rod-like pellet-shaped Yttrium-doped nanostructures, and the elements present were confirmed with the Energy Dispersive X-Ray Analysis (EDAX). Various concentrations of the synthesized materials were tested for antibacterial activity against Gram-positive (Staphylococcus aureus 902) and Gram-negative (E. coli 443) strains using the agar-well diffusion method with gentamicin antibiotic as a positive control. High antibacterial activity of 87.1% and 83.3% was shown by 10% Yttrium-doped LaTiO3 (LY(0.1)TO) at 500 mg/mL against both positive and negative stains, respectively. Moreover, the antioxidant properties of synthesized materials were assessed with IC50 values of 352.33 µg/mL, 458.055 µg/mL, and 440.163 µg/mL for samples LaTi1 − xYxO3, where x = 0, 0.05, and 0.1 respectively. The antibacterial and antioxidant capabilities of the proposed samples illustrate their applicability in various biomedical applications.

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“…The significance of the synthesis circumstances on the electrochemical behaviour of LM is fine exploited. [20][21][22] Photoacoustic Spectroscopy (PAS) is a technique through a number of distinct features that develops, it as a complementary technique to the conventional forms of spectroscopy. Essentially a separation of photothermal spectroscopy in which the heat created owing to the absorption of light energy measured straightly in a sample.…”

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confidence: 99%

Dielectric and Thermal Transport Properties of Lithium Manganate (LiMn₂O₄) for Use in Electrical Storage Devices

Thirupathy

Archana

2021

ECS J. Solid State Sci. Technol.

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Lithium manganate (LM) has been extremely well established as a material for applications in electronic devices such as personal organizers, pagers, personal computers, facsimile machines, portable stereophonic equipment, and cellular phones. LM nanoparticles have been prepared via the sol-gel method through a stoichiometric quantity of Manganese acetate tetrahydrate, Lithium hydroxide monohydrate, and Citric acid anhydrous taken in 1:2:3 ratios. The calcination was done with the resulting powder samples at different temperatures of 600 °C and 700 °C. The LM powder samples were utilized for dissimilar characterizations for FTIR spectral analysis exhibiting the presence of functional groups. PXRD result illustrates that the “h, k, l” values are well matched by the earlier reported values. The dielectric properties are calculated at different temperatures from 50 °C to 350 °C. When the calcination temperature increases the conductivity of the sample also increases. The dielectric loss and dielectric constant confirm the normal dielectric behavior of the material. XPS results show the measured empirical formula, elemental composition, and electronic state of the elements in a material. Photoacoustic spectroscopy analysis of the title compound values makes it a promising material for Li-ion battery and electrical storage devices applications.

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Role of Sm3+ dopant in the formation of La(1-x)SmxCrO3 solid state nanoperovskites – Correlation of its augmented physical properties

Cited by 17 publications

References 23 publications

Influence of Te-Incorporated LaCoO3 on Structural, Morphology and Magnetic Properties for Multifunctional Device Applications

Influence of Te-Incorporated LaCoO3 on Structural, Morphology and Magnetic Properties for Multifunctional Device Applications

Effect of Yttrium doping on antibacterial and antioxidant property of LaTiO3

Dielectric and Thermal Transport Properties of Lithium Manganate (LiMn₂O₄) for Use in Electrical Storage Devices

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Role of Sm3+ dopant in the formation of La(1-x)SmxCrO3 solid state nanoperovskites – Correlation of its augmented physical properties

Cited by 17 publications

References 23 publications

Influence of Te-Incorporated LaCoO3 on Structural, Morphology and Magnetic Properties for Multifunctional Device Applications

Influence of Te-Incorporated LaCoO3 on Structural, Morphology and Magnetic Properties for Multifunctional Device Applications

Effect of Yttrium doping on antibacterial and antioxidant property of LaTiO3

Dielectric and Thermal Transport Properties of Lithium Manganate (LiMn2O4) for Use in Electrical Storage Devices

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Dielectric and Thermal Transport Properties of Lithium Manganate (LiMn₂O₄) for Use in Electrical Storage Devices