Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Unveiling the shape-selective CoCr2-yScyO4 nanomagnetism

Full text
Author(s):
Angadi, V. Jagadeesha [1, 2] ; Manjunatha, K. [3] ; Oliveira, Marisa C. [4] ; Longo, Elson [4] ; de Lazaro, Sergio R. [5] ; Ribeiro, Renan A. P. [6] ; Bhat, S. V. [1]
Total Authors: 7
Affiliation:
[1] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka - India
[2] PC Jabin Sci Coll, Dept Phys, Hubballi 580031 - India
[3] Presidency Univ, Sch Engn, Dept Phys, Bangalore 560064, Karnataka - India
[4] Univ Fed Sao Carlos, Ctr Dev Funct Mat CDMF, Sao Carlos, SP - Brazil
[5] Univ Estadual Ponta Grossa, Dept Chem, Ponta Grossa, PR - Brazil
[6] Minas Gerais State Univ, Dept Chem, Divinopolis, MG - Brazil
Total Affiliations: 6
Document type: Journal article
Source: Applied Surface Science; v. 574, FEB 1 2022.
Web of Science Citations: 0
Abstract

In this study CoCr2-yScyO4 (y = 0, 0.01, 0.02, and 0.03) nanoparticles (NPs) have been synthesized following the solution combustion method and characterized by combining experimental techniques with high-throughput Density Functional Theory calculations. The structural analysis confirmed the crystalline nature with spinel cubic structure exhibiting an average particle size between 7 and 10 nm. The morphological analysis confirmed the exposure of the (220), (311), (400), and (422) planes in agreement with theoretical results based on Wulff Construction. Magnetic analysis indicated the existence of paramagnetic to ferrimagnetic phase transition at the critical temperature (Tc) and a conical spiral spin phase was found at the spiral transition temperature (Ts). In both the cases, the transition temperature was seen to decrease with increase in the Sc content in agreement with the exchange-coupling constants calculated by DFT, where a singular magneto-structural behavior was observed. Theoretical results for shape-oriented magnetic properties indicate the anisotropic spin density distribution and surface exposure, providing a general picture of shape-selective control of nanomagnetism. (AU)

FAPESP's process: 21/01651-1 - CDMF - Functional Materials Development Center: theoretical study of multifunctional materials with potential antiviral application
Grantee:Marisa Carvalho de Oliveira
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 13/07296-2 - CDMF - Center for the Development of Functional Materials
Grantee:Elson Longo da Silva
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC