FMR and Magnetization Study of ZnFe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt; Nanoparticles in 0.40Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;/0.60ZnO Nanocomposite

Typek, J.; Wardal, K.; Guskos, N.; Sibera, D.; Narkiewicz, U.

doi:10.1109/tmag.2014.2341216

Cited by 5 publications

(1 citation statement)

References 24 publications

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“…The Resonance field behavior at low fields can be explained using the core-shell model. This produces an exchange coupling between the spins of the shell and spins of the nucleus, which causes unidirectional anisotropy with an easy axis along the direction of the field [24], bringing therefore a decrease in the resonance field [25]. In region I (low field region) an increase in and with the decreasing of the temperature up to is observed.…”

Section: Ferromagnetic Resonance ( Fmr)mentioning

confidence: 99%

Temperature dependence of the ferromagnetic resonance (FMR) for MnxCo1−xFe2O4 (0 ≤ x ≤ 1) nanoparticles

Sánchez

Briceño

Larionova

et al. 2021

Journal of Materials Research

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Ferromagnetic resonance was used to study the temperature dependence of mixed manganesecobalt ferrite nanoparticles . The hydrothermal method was used to synthesize the Mn x Co 1−x Fe 2 O 4 nanoparticles. The structural characterization was carried out using X-ray diffraction (XRD), Scanning electron microscopy (SEM), and Transmission electron microscopy (TEM ), obtaining a nanoparticles size range between 5-60 nm. Magnetization curves M(H) as a function of the Mn 2+ content at 2.5 and 300 K, and ferromagnetic resonance (FMR) in the temperature range of 80 < T < 700 K were used for the magnetic characterization. The FMR spectra show asymmetric signals characteristic of the strong magnetic anisotropies. The temperature dependence of the resonance field shows three differentiated regions, a low-temperature region in which the resonance is attributed to agglomerates of nanoparticles, an intermediate temperature region where the resonance is characteristic of dispersed magnetic nanoparticles, and a third region over the blocking temperature corresponding to a superparamagnetic behavior of the system. The study of the H R and the peak to peak linewidth as a function of the temperature and Mn 2+ content allows us to accurately elucidate the key characteristics of the deviation from the ideal superparamagnetic behavior observed by magnetic measurements and open up new research possibilities for evaluating interparticle interactions in nanoparticles.

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Section: Ferromagnetic Resonance ( Fmr)mentioning

confidence: 99%