Ecofriendly synthesis, crystal chemistry, electrical, and low-temperature magnetic properties of nano-particles (Li–Cr) for drug delivery and MRI applications

Mixed Li (0.5− x /2) Fe (2.5− x /2) Cr x O 4 ( X  = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) nano-ferrite system was synthesized by using Citrate gel auto-combustion method. Structural parameters such as lattice constant, hopping length, and X-ray density were reported and discussed with composition. The surfa...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2021, Vol.32 (2), p.1392-1401
Main Authors: Ravinder, D., Nayak, D. Ravinder, Rapolu, Sridhar, Batoo, Khalid Mujasam, Raslan, Emad H., Hadi, Mohammad
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemical synthesis
Chemistry and Materials Science
Composition
Crystallites
Curie temperature
Electrical properties
Lattice parameters
Lithium ferrite
Low temperature
Magnetic measurement
Magnetic properties
Magnetism
Magnetometers
Materials Science
Morphology
Nanoparticles
Optical and Electronic Materials
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Summary:Mixed Li (0.5− x /2) Fe (2.5− x /2) Cr x O 4 ( X  = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) nano-ferrite system was synthesized by using Citrate gel auto-combustion method. Structural parameters such as lattice constant, hopping length, and X-ray density were reported and discussed with composition. The surface morphology was presented and explained with TEM analysis and SAED patterns. XRD patterns show the prepared samples are single-phase cubic spinel structure and the average particle size lies between 17 to 27 nm. TEM analysis shows prepared sample are the crystallite formation in nano-size. DC electrical properties presented variation with temperature and composition were discussed and studied well behind the Curie temperature. Magnetic measurements are carryout with VSM (Vibrating Sample Magnetometer), Observations have shown that magnetic properties are strongly influenced due to the substitution of Cr 3+ in Lithium ferrites. Two samples Li 0.5 Cr 0.6 Fe 1.9 O 4 and Li 0.5 Cr 1.0 Fe 1.5 O 4 were subjected to an applied field of 100 Oe between 5 and 375 K temperature for ZFC and FC (Zero Field Cooled and Field Cooled) measurements of magnetization which indicated blocking temperature at around 350 K for both samples beyond which they exhibited super-paramagnetic behavior.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-020-04908-0