Startseite Influence of doping concentrations on the structural, optical, and magnetic properties of Ba-doped LaCoO3 nanostructure
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Influence of doping concentrations on the structural, optical, and magnetic properties of Ba-doped LaCoO3 nanostructure

  • Jhelai Sahadevan , Mugesh Madavan , Esakki Muthu Sankaran EMAIL logo , Ikhyun Kim , Rajesh Venkatesan , Naiyf S. Alharbi , Jamal M. Khaled und Sivaprakash Paramasivam
Veröffentlicht/Copyright: 12. März 2024

Abstract

In this article we report the structural, morphology, vibrational, optical and magnetic properties of Ba x La1−xCoO3 (x = 0, 0.05, and 0.1) (LBCO) samples. The X-ray diffraction shows that samples are in single rhombohedral phase. The Raman signals of LCO were quite small in comparison to LBCO, which exhibited a Raman peak above 675 cm−1. The band seen with a wavenumber of 484 cm−1 corresponds to the vibrational modes of Eg bending and Ba–O stretching. UV–DRS and photoluminescence spectra indicated broad absorption over the ultraviolet, visible, and near-infrared spectrums. Surface morphology and EDAX spectra corroborated the materials homogeneous size distribution and homogenous microstructure, with Ba indicating a more stable structure. XPS was used to study chemical states of LBCO and found Co (2p), La (3d), O (1s), and C (1s) elements in perovskite compounds. A peak beneath 300 eV indicated adventitious carbon on surface materials. XPS survey spectrum elements La, Ba, Co, and O had their own binding energies. The magnetization-field dependency of LBCO at 300 K showed that Ba insertion into the LCO switched it from paramagnetic to weak ferromagnetic. Ba considerably decreased magnetic saturation and coercivity, influencing magneto-crystallites’ anisotropy and coercive field.


Corresponding author: Esakki Muthu Sankaran, Centre for Material Science, Department of Physics, Karpagam Academy of Higher Education, Coimbatore 641 021, India, E-mail:

Funding source: Researchers Supporting Project number (RSP2024R70), King Saud University, Riyadh, Saudi Arabia

Award Identifier / Grant number: Project Number (RSP2024R70)

Acknowledgments

The authors express their sincere appreciation to the Researchers Supporting Project Number (RSP2024R70), King Saud University, Riyadh, Saudi Arabia.

  1. Research ethics: Not applicable.

  2. Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.

  3. Competing interests: The authors state no conflict of interest.

  4. Research funding: Researchers Supporting Project number (RSP2024R70), King Saud University, Riyadh, Saudi Arabia.

  5. Data availability: The raw data can be obtained on request from the corresponding author.

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Received: 2024-01-22
Accepted: 2024-02-19
Published Online: 2024-03-12
Published in Print: 2025-01-29

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