The influence of iron content and alkaline concentration on Mn0.75Zn0.25FeyO4 structure, surface charge and acb response
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2017
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BRAZIL MRS MEETING, 16th
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Nanotechnology applied on magnetic material provide a good opportunity to
develop biomaterials as tracers for Alternating Current Biosuceptometry
(ACB)and Magnetic Resonance Imaging (MRI) to diagnose certain diseases as
cancer. The magnetic nanoparticles can still constitute drug carrier systems and
hyperthermia agent for cancer treatment.
Neverthless, the efficiency for therapy and diagnosis depends on the magnetic
susceptibility. In this work, the ferrite nanoparticles with nominal composition
Mn0.75Zn0.25FeyO4, where 1.5 ≤ y ≤ 2.8, were synthesized by the co-precipitation
method and, the influence of iron content and concentration of precipitating agent
on the structure, ACB response and surface charge was analyzed. It was noted that
the synthesis using alkaline metal hydroxide between 0.1, 0.15 and 0.2 mol/L
provides single-phase materials [ICSD 28515 (PDF - 742 402), space group Fd3m].
The higher concentration (0.25 mol/L) leads to materials with higher crystallinity
and similar ACB response to those precipitated by lower concentration base,
despite the secondary phase. A surface charge of 30 mV in module was achieved,
which decreased as the concentration of the precipitating agent increased.
Como referenciar
MOURA, TIAGO F.A.; NAVARRO, RAPHAELLA; SHIOTSUKI, AUGUSTO K.; UTIYAMA, ANA P.M.S.; ICHIKAWA, RODRIGO U.; MATOS, RONALDO V.R.; CASTRO, GUSTAVO R.; YOSHITO, WALTER K.; MARTINEZ, L.G.; MIRANDA, JOSE R.A.; SAEKI, MARGARIDA J. The influence of iron content and alkaline concentration on Mn0.75Zn0.25FeyO4 structure, surface charge and acb response. In: BRAZIL MRS MEETING, 16th, September 10-14, 2017, Gramado, RS. Abstract... São Carlos, SP: Aptor Software, 2017. p. 578-578. Disponível em: http://repositorio.ipen.br/handle/123456789/31193. Acesso em: 29 Apr 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.