期刊
ACTA PHYSICA POLONICA A
卷 114, 期 6, 页码 1605-1613出版社
POLISH ACAD SCIENCES INST PHYSICS
DOI: 10.12693/APhysPolA.114.1605
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Structural phase transformations and magnetic properties of mesoporous MCM-41 template modified with iron and nickel salts were studied by nitrogen physisorption, X-ray diffraction, Mossbauer spectroscopy and transmission electron microscopy. The FeNi-oxide or the bimetallic crystal structure is formed for low and high Ni concentrations, respectively. The average size of nanoparticles is about 10 nm. About 70% of particles exist in a superparamagnetic state at room temperature.
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