Mg-Doped CoCr2O4 Nanoparticles: Implications for Magnetic Memory and Magnetocaloric Effect

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Manjunatha, Krishtappa ; Chiu, Hsin-Hao ; Ho, Ming-Kang ; Hsu, Tsu-En ; Yu, Shih-Lung ; Chin, Chu-En ; Cheng, Chia-Liang ; de Oliveira, Marisa Carvalho ; Longo, Elson ; Ribeiro, Renan A. P. ; Nagabhushana, Hanumanthappa ; Wu, Sheng Yun

• Tipo de documento: Artigo Científico
• Fonte: ACS APPLIED NANO MATERIALS; v. 6, n. 13, p. 14-pg., 2023-06-20.

Resumo

Using the co-precipitate method, Mg-doped CoCr2O4 nanoparticles (NPs) with a particle size ranging from11to 22 nm were synthesized, and their structural, surface, vibrational,and magnetic properties were examined through experimental and theoreticalapproaches. The inherent magnetic inhomogeneity of the NPs was foundto be the cause of the observed exchange bias effect. The magneticmemory effect was studied below the spin glass-transition temperatureusing time- and temperature-dependent magnetization measurements,and the magnetocaloric effect was investigated across the Curie temperature.These NPs show promising potential for magnetic memory and magnetocaloriceffect fields. (AU)

• Processo FAPESP: 21/01651-1 - CDMF - Centro de Desenvolvimento de Materiais Funcionais: estudo teórico de materiais multifuncionais com potencial aplicação antiviral
• Beneficiário: Marisa Carvalho de Oliveira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs