Superparamagnetic and ferrimagnetic nanoparticles in glass matrix

Superparamagnetic and ferrimagnetic nanoparticles in glass matrix

Faraday rotation (FR) spectral, field, and temperature dependencies in oxide glasses with small additions of paramagnetic elements are investigated. Formation of ferrite nanoparticles in amorphous glass matrices is revealed by X-ray diffraction. Particles have crystal structure similar to spinel str...

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Bibliographic Details
Published in:Physica. B, Condensed matter Vol. 301; no. 3; pp. 203 - 211
Main Authors: Edelman, I., Ivantsov, R., Vasiliev, A., Stepanov, S., Kornilova, E., Zarubina, T.
Format: Journal Article
Language:English
Published: Elsevier B.V 01-08-2001
Subjects:
Faraday rotation
Magnetic nanoparticles
75.20.Tt
78.20.Ls
Faraday rotation
Magnetic nanoparticles
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Summary:Faraday rotation (FR) spectral, field, and temperature dependencies in oxide glasses with small additions of paramagnetic elements are investigated. Formation of ferrite nanoparticles in amorphous glass matrices is revealed by X-ray diffraction. Particles have crystal structure similar to spinel structure, their dimensions are about 10–24 nm. The FR field dependencies are typical for ferrimagnetic or superparamagnetic substances depending on particle size. Strong FR increase at the samples cooling (more than twice for some samples) in the temperature interval 105–273 K is observed.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(01)00274-5