We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Correlation of magnetocaloric effect and critical behaviour in Ce<sup>3+</sup>-doped zinc–cobalt ferrite nanoparticles.
- Authors
Mandal, Sibasish; Mukherjee, Samrat
- Abstract
In this report, a detailed investigation of magnetocaloric properties of Ce 3 + -doped zinc–cobalt spinel ferrite nanoparticles with the generic formula Zn 0.6 Co 0.4 Ce x Fe 2 - x O 4 (x = 0.02 , 0.04 , 0.06) synthesized via chemical coprecipitation method had been carried out. Rietveld analysis of the X-ray diffraction (XRD) patterns confirmed the phase purity of the nanoparticles and the corresponding space group was found to be Fd 3 ¯ m for the series. The shift of microstrain inside the crystal from compressive to tensile regime with doping of Ce confirms the expansion of unit cell in the whole series. Raman spectroscopy also confirmed the spinel structure of the samples. Coexistence of magnetic phases below room temperature is observed from the magnetization measurements with temperature under 500 Oe applied field. A decrease in T C as well as T B was observed with increase in x due to weakening of exchange interaction. The transition temperature of Ce-04 nanoparticles is quite close to room temperature which may be beneficial for room temperature magnetic refrigeration. Though the Ce 3 + doping in the series did not favour enhancement of magnetic entropy change, it enhanced the RCP which could be beneficial for room temperature or below room temperature magnetic refrigeration. A good correlation was established between magnetocaloric properties and critical behaviour of Ce 3 + -doped zinc–cobalt spinel ferrite nanoparticles.
- Subjects
MAGNETOCALORIC effects; ZINC ferrites; EXCHANGE interactions (Magnetism); MAGNETIC cooling; RIETVELD refinement; NANOPARTICLES; MAGNETIC entropy
- Publication
Journal of Materials Science, 2024, Vol 59, Issue 17, p7299
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-024-09598-1