Magnetic properties of fine SFMO particles: Superparamagnetism

T. Suominen; J. Raittila; T. Salminen; K. Schlesier; J. Lindén; P. Paturi

doi:10.1016/j.jmmm.2006.07.016

Magnetic properties of fine SFMO particles: Superparamagnetism

T. Suominen^*, J. Raittila, T. Salminen, K. Schlesier, J. Lindén, P. Paturi

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Article › Scientific › peer-review

35 Citations (Scopus)

Abstract

Magnetic properties of fine Sr₂ FeMoO₆ (SFMO) powders were systematically studied and superparamagnetism was observed. The SFMO samples were prepared using a citrate-gel method and were characterized by X-ray diffraction (XRD), ferromagnetic resonance (FMR) and Mössbauer spectroscopy. The XRD measurements showed that the powders are nearly pure and the Rietveld refinement gave particle sizes of 31 and 197 nm and antisite disorders of 10 and 15%, respectively. The 197 nm crystallite size sample has a T_C = 415 K and a magnetic moment of 3.0 μ_B / f . u. Several measurements made by SQUID magnetometer, FMR and Mössbauer spectroscopy showed that the 31 nm crystallite sample behaves superparamagnetically with blocking temperature T_B = 35 K and it has a reduced saturation magnetization of 1.0 μ_B / f . u . at 5 K and effective paramagnetic moment of 3.0 μ_B.

Original language	English
Pages (from-to)	278-284
Number of pages	7
Journal	Journal of Magnetism and Magnetic Materials
Volume	309
Issue number	2
DOIs	https://doi.org/10.1016/j.jmmm.2006.07.016
Publication status	Published - Feb 2007
MoE publication type	A1 Journal article-refereed

Keywords

Double perovskite
SFMO
Superparamagnetism

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10.1016/j.jmmm.2006.07.016

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title = "Magnetic properties of fine SFMO particles: Superparamagnetism",

abstract = "Magnetic properties of fine Sr2 FeMoO6 (SFMO) powders were systematically studied and superparamagnetism was observed. The SFMO samples were prepared using a citrate-gel method and were characterized by X-ray diffraction (XRD), ferromagnetic resonance (FMR) and M{\"o}ssbauer spectroscopy. The XRD measurements showed that the powders are nearly pure and the Rietveld refinement gave particle sizes of 31 and 197 nm and antisite disorders of 10 and 15%, respectively. The 197 nm crystallite size sample has a TC = 415 K and a magnetic moment of 3.0 μB / f . u. Several measurements made by SQUID magnetometer, FMR and M{\"o}ssbauer spectroscopy showed that the 31 nm crystallite sample behaves superparamagnetically with blocking temperature TB = 35 K and it has a reduced saturation magnetization of 1.0 μB / f . u . at 5 K and effective paramagnetic moment of 3.0 μB.",

keywords = "Double perovskite, SFMO, Superparamagnetism",

author = "T. Suominen and J. Raittila and T. Salminen and K. Schlesier and J. Lind{\'e}n and P. Paturi",

year = "2007",

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doi = "10.1016/j.jmmm.2006.07.016",

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T2 - Superparamagnetism

AU - Suominen, T.

AU - Raittila, J.

AU - Salminen, T.

AU - Schlesier, K.

AU - Lindén, J.

AU - Paturi, P.

PY - 2007/2

Y1 - 2007/2

N2 - Magnetic properties of fine Sr2 FeMoO6 (SFMO) powders were systematically studied and superparamagnetism was observed. The SFMO samples were prepared using a citrate-gel method and were characterized by X-ray diffraction (XRD), ferromagnetic resonance (FMR) and Mössbauer spectroscopy. The XRD measurements showed that the powders are nearly pure and the Rietveld refinement gave particle sizes of 31 and 197 nm and antisite disorders of 10 and 15%, respectively. The 197 nm crystallite size sample has a TC = 415 K and a magnetic moment of 3.0 μB / f . u. Several measurements made by SQUID magnetometer, FMR and Mössbauer spectroscopy showed that the 31 nm crystallite sample behaves superparamagnetically with blocking temperature TB = 35 K and it has a reduced saturation magnetization of 1.0 μB / f . u . at 5 K and effective paramagnetic moment of 3.0 μB.

AB - Magnetic properties of fine Sr2 FeMoO6 (SFMO) powders were systematically studied and superparamagnetism was observed. The SFMO samples were prepared using a citrate-gel method and were characterized by X-ray diffraction (XRD), ferromagnetic resonance (FMR) and Mössbauer spectroscopy. The XRD measurements showed that the powders are nearly pure and the Rietveld refinement gave particle sizes of 31 and 197 nm and antisite disorders of 10 and 15%, respectively. The 197 nm crystallite size sample has a TC = 415 K and a magnetic moment of 3.0 μB / f . u. Several measurements made by SQUID magnetometer, FMR and Mössbauer spectroscopy showed that the 31 nm crystallite sample behaves superparamagnetically with blocking temperature TB = 35 K and it has a reduced saturation magnetization of 1.0 μB / f . u . at 5 K and effective paramagnetic moment of 3.0 μB.

KW - Double perovskite

KW - SFMO

KW - Superparamagnetism

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JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 2

ER -

Magnetic properties of fine SFMO particles: Superparamagnetism

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Keywords

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