Effects of Various Sintering Conditions on the Structural and Magnetic Properties of Zinc Ferrite (ZnFe2O4)

• Autor(a) principal: Puspitasari,Poppy
• Data de Publicação: 2021
• Outros Autores: Rizkia,Ufsarah Anugrah, Sukarni,Sukarni, Permanasari,Avita Ayu, Taufiq,Ahmad, Putra,Andika Bagus Nur Rahma
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Materials research (São Carlos. Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392021000100205
• topic: Ferrite; Coprecipitation; Hysteresis; Sintering

Abstract Zinc ferrite (ZnFe2O4) nanoparticles have attracted the attention of researchers because of their unique chemical properties and particle-size-dependent magnetic properties. High-surface-area spinel ferrites have numerous technical applications in areas such as high-density information storage, ferrofluids, and catalysis. The coprecipitation technique is the preferred method for preparing nanoscale ZnFe2O4 because it results in a small crystals with a uniform size distribution. In this study, the synthesis was conducted in solution for 48 h, followed by sintering at 1000°C for 1.5–3.5 h. The smallest crystals (70.58 nm) were found in the sample sintered for 2.5 h. Fourier transform infrared spectroscopy (FTIR) functional-group analysis confirmed the presence of Fe–O and Zn–O bonds of cations in octahedral and tetrahedral sites. The ZnFe2O4 sintered for 3.5 h was superparamagnetic. The characterization results suggest that the obtained ZnFe2O4 could be used as a nanofluid in heat exchangers.