NDLI: Structural, thermal, and transport properties of La0.67Sr0.33MnO3 nanoparticles synthesized via the sol–gel auto-combustion technique

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Structural, thermal, and transport properties of La0.67Sr0.33MnO3 nanoparticles synthesized via the sol–gel auto-combustion technique

Content Provider	Semantic Scholar
Author	Saleem, Muhammad Varshney, Dinesh
Copyright Year	2018
Abstract	Herein, rare-earth manganite, La0.67Sr0.33MnO3, has been prepared by a citric acid-assisted sol–gel auto-combustion method at a maintained pH value of 11. Room-temperature X-ray diffraction (RT-XRD) data analysis revealed a rhombohedral structure for the sample with the space group R3c, which was further confirmed by synchrotron radiation X-ray diffraction (SR-XRD). Rietveld refinement was carried out for both spectra, which confirmed the SR-XRD and RT-XRD results and the various structural parameters. To determine any of the phase transitions in the sample, temperature-dependent X-ray diffraction corresponding to the temperatures of 100 K, 200 K, 250 K, and 325 K was carried out, and no new phase was found. Temperature-dependent Raman characterization confirmed the metallic phase of the sample with the reduced Jahn–Teller distortion. Scanning electron microscopy confirmed the growth in the grain size as a result of a high sintering temperature. Compositional verification was conducted using energy-dispersive analysis of X-ray diffraction (EDAX). Low-temperature dc resistivity measurement showed a metal-insulator transition temperature (TMI) of ≈178 K. The DSC-specific heat measurement shows the ferromagnetic metallic nature where heat capacity increases with an increase in temperature.
Starting Page	1600
Ending Page	1609
Page Count	10
File Format	PDF HTM / HTML
DOI	10.1039/C7RA09883A
Volume Number	8
Alternate Webpage(s)	https://pubs.rsc.org/en/content/articlepdf/2018/ra/c7ra09883a
Alternate Webpage(s)	https://doi.org/10.1039/C7RA09883A
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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