Details

Autor(en) / Beteiligte

• Phong, L. T. H
• Manh, D. H
• Nam, P. H
• Lam, V. D
• Khuyen, B. X
• Tung, B. S
• Bach, T. N
• Tung, D. K
• Phuc, N. X
• Hung, T. V
• Mai, Thi Ly
• Phan, The-Long
• Phan, Manh Huong

Titel

Structural, magnetic and hyperthermia properties and their correlation in cobalt-doped magnetite nanoparticles

Ist Teil von

• RSC advances, 2021-12, Vol.12 (2), p.698-77

Ort / Verlag

England: Royal Society of Chemistry

Erscheinungsjahr

2021

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Cobalt doped magnetite nanoparticles (Co x Fe 3− x O 4 NPs) are investigated extensively because of their potential hyperthermia application. However, the complex interrelation among chemical compositions and particle size means their correlation with the magnetic and heating properties is not trivial to predict. Here, we prepared Co x Fe 3− x O 4 NPs (0 ≤ x ≤ 1) to investigate the effects of cobalt content and particle size on their magnetic and heating properties. A detailed analysis of the structural features indicated the similarity between the crystallite and particle sizes as well as their non-monotonic change with the increase of Co content. Magnetic measurements for the Co x Fe 3− x O 4 NPs (0 ≤ x ≤ 1) showed that the blocking temperature, the saturation magnetization, the coercivity, and the anisotropy constant followed a similar trend with a maximum at x = 0.7. Moreover, 57 Fe Mössbauer spectroscopy adequately explained the magnetic behaviour, the anisotropy constant, and saturation magnetization of low Co content samples. Finally, our study shows that the relaxation loss is a primary contributor to the SAR in Co x Fe 3− x O 4 NPs with low Co contents as well as their potential application in magnetic hyperthermia. The interrelation among chemical compositions, structure, and heating properties of cobalt doped magnetite nanoparticles (Co x Fe 3− x O 4 NPs) for their potential hyperthermia application.