Magnetic hyperthermia in brick-like Ag@Fe3O4 core-shell nano particles

Autor(es)

Brollo, M. E. F. ^[1] ; Orozco-Henao, J. M. ^[1] ; Lopez-Ruiz, R. ^[1] ; Muraca, D. ^[1] ; Dias, C. S. B. ^{[1, 2]} ; Pirota, K. R. ^[1] ; Knobel, M. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas UNICAMP, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP - Brazil

^[2] Brazilian Ctr Energy & Mat CNPEM, Brazilian Synchrotron Light Lab LNLS, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Magnetism and Magnetic Materials; v. 397, p. 20-27, JAN 1 2016.
• Citações Web of Science: 30

Resumo

Heating efficiency of multifunctional Ag@Fe3O4 brick-like nanoparticles under alternating magnetic field was investigated by means of specific absorption rate (SAR) measurements, and compared with equivalent measurements for plain magnetite and dimer heteroparticles. The samples were synthesized by thermal decomposition reactions and present narrow size polydispersity and high degree of crystallinity. The SAR values are analyzed using the superparamagnetic theory, in which the basic morphology, size and dispersion of sizes play key roles. The results suggest that these novel brick-like nanoparticles are good candidates for hyperthermia applications, displaying heating efficiencies comparable with the most efficient plain nanoparticles. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 11/01235-6 - Estudo de sistemas granulares magnéticos: efeitos de interações dipolares e de superfície em nanopartículas magnéticas e ferrogel
• Beneficiário: Diego Muraca
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/13275-8 - Efeitos de tamanho finito, síntese e propriedades magnéticas de nanofios modulados
• Beneficiário: Román López Ruiz
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado