Morphology and magnetic properties of Fe3O4-alginic acid nanocomposites
M. Kazmierczak, K. Pogorzelec-Glaser, A. Hilczer, S. Jurga, L., Majchrzycki, M. Nowicki, R. Czajka, F. Matelski, R. Pankiewicz, B. Leska, L., Kepinski, B. Andrzejewski
TL;DR
This study investigates how alginic acid capping affects the morphology, structure, and magnetic properties of Fe3O4 nanoparticles, revealing enhanced surface magnetization and unconventional low-temperature magnetic behavior.
Contribution
It provides new insights into the effects of alginic acid on Fe3O4 nanoparticle surface properties and magnetic behavior, highlighting the chemical bonding and magnetic phenomena involved.
Findings
Alginic acid capping recovers surface magnetization.
Enhanced surface spin disorder observed at low temperatures.
Distinct magnetic behaviors between capped and uncapped nanoparticles.
Abstract
Morphology, structure and magnetic properties of nanocomposites of magnetite (Fe3O4) nanoparticles and alginic acid (AA) are studied. Magnetite Fe3O4 nanoparticles and the nanoparticles capped with alginic acid exhibit very distinct properties. The chemical bonding between alginic acid and surface of magnetite nanoparticles results in recovery of surface magnetization. On the other hand, it also leads to enhanced surface spin disorder and unconventional behavior of magnetization observed in Fe3O4-AA nanocomposites at low temperatures.
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Taxonomy
TopicsNanoparticle-Based Drug Delivery · Magnetic Properties and Synthesis of Ferrites · Advanced Theoretical and Applied Studies in Material Sciences and Geometry