Configuring Nd0.7Ca0.3Mn1-xNixO3 perovskite nanocomposites with magnetocaloric performance

Multicomponent perovskite nanomaterials Nd0.7Ca0.3Mn1-xNixO3 are synthesized and labeled as NMO, NCMO, NCMNO1, NCMNO2 and NCMNO3. Structural, magnetic and magnetocaloric properties have been investigated. X-ray diffraction analysis using Rietveld refinements confirm the formation of NdMnO3 nanocryst...

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Bibliographic Details
Published in:Ceramics international 2022-12, Vol.48 (24), p.36880-36887
Main Authors: Amalthi, P., Judith Vijaya, J., John Kennedy, L., Mustafa, A., Bououdina, M., Shinde, K.P., Kim, D.H.
Format: Article
Language:English
Subjects:
Curie temperature
Magnetocaloric effect
Nanocomposites
Neodymium manganites
Perovskite
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Summary:Multicomponent perovskite nanomaterials Nd0.7Ca0.3Mn1-xNixO3 are synthesized and labeled as NMO, NCMO, NCMNO1, NCMNO2 and NCMNO3. Structural, magnetic and magnetocaloric properties have been investigated. X-ray diffraction analysis using Rietveld refinements confirm the formation of NdMnO3 nanocrystalline orthorhombic phase (Pnma) with the appearance of a secondary cubic phase Nd2O3 as justified by Hume-Rothery rule. The substitution of ions (Nd/Ca and Mn/Ni) alters the crystallite size, microstrain and the percentage of Nd2O3 phase. The replacement of Mn ions by Ni2+reduces the magnetization and changes the Curie temperature (Tc). The magnetocaloric effect has also been assessed by means of magnetic-entropy change, which is determined from field dependence of magnetization. It is found that a large magnetic-entropy change takes place around Tcfor the studied nanocomposites. Under an applied field interval of 100 kOe, the maximum magnetic-entropy changes -ΔSM = 2.07, 1.88 J/kg.K at ΔH = 7T occurs for NCMNO1 and NCMNO3, respectively.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2022.08.254