Magnetic Interaction between Iron Particles in Lithium Phosphate Systems

Andronache, C.; Bǎlǎșoiu, M.; Racolta, D.

doi:10.1134/s0036024417130039

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…As a consequence of hopping an unpaired 3d 1 electron from the V 4+ site to the V 5+ site, electrical conduction occurs. The possibility of the vanadium ion to change its oxidation state during the melting and quenching process of glass preparation was reported in the literature [ 23 , 24 , 25 , 26 ]. The data reveal structural changes of the units due to the formation of bonds between non-bridging oxygen and iron atoms in different coordination, while the increase in the content of vanadium ions in the samples leads to the decrease of the activation energy [ 23 , 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Structure on Magnetic Properties of Calcium-Phosphate Systems Doped with Iron and Vanadium Ions

Racolta

Andronache

Bǎlǎșoiu

et al. 2023

IJMS

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The aim of this study was to prepare and characterize the glasses made of x(Fe2O3∙V2O5)∙(100 − x)[P2O5∙CaO] with x ranging of 0–50%. The contribution of Fe2O3 and V2O5 amount on the structure of P2O5·CaO matrix was investigated. The vitreous materials were characterized by XRD (X-ray diffraction analysis), EPR (Electron Paramagnetic Resonance) spectroscopy, and magnetic susceptibility measurements. A hyperfine structure typical for isolated V4+ ions was noticed to all spectra containing low amount of V2O5. The XRD spectra show the amorphous nature of samples, apart x = 50%. An overlap of the EPR spectrum of a broad line without the hyperfine structure characteristic of clustered ions was observed with increasing V2O5 content. The results of magnetic susceptibility measurements explain the antiferromagnetic or ferromagnetic interactions expressed between the iron and vanadium ions in the investigated glass.

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