Influence of the Structure on Magnetic Properties of Calcium-Phosphate Systems Doped with Iron and Vanadium Ions
The aim of this study was to prepare and characterize the glasses made of x(Fe<sub>2</sub>O<sub>3</sub>∙V<sub>2</sub>O<sub>5</sub>)∙(100 − x)[P<sub>2</sub>O<sub>5</sub>∙CaO] with x ranging of 0–50%. The contribution of Fe<sub...
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MDPI AG
2023-04-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/24/8/7366 |
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| author | Dania Racolta Constantin Andronache Maria Balasoiu Leonard Mihaly-Cozmuta Vadim Sikolenko Oleg Orelovich Andrey Rogachev Gheorghe Borodi Gheorghe Iepure |
| author_facet | Dania Racolta Constantin Andronache Maria Balasoiu Leonard Mihaly-Cozmuta Vadim Sikolenko Oleg Orelovich Andrey Rogachev Gheorghe Borodi Gheorghe Iepure |
| author_sort | Dania Racolta |
| collection | DOAJ |
| description | The aim of this study was to prepare and characterize the glasses made of x(Fe<sub>2</sub>O<sub>3</sub>∙V<sub>2</sub>O<sub>5</sub>)∙(100 − x)[P<sub>2</sub>O<sub>5</sub>∙CaO] with x ranging of 0–50%. The contribution of Fe<sub>2</sub>O<sub>3</sub> and V<sub>2</sub>O<sub>5</sub> amount on the structure of P<sub>2</sub>O<sub>5</sub>·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 V<sup>4+</sup> ions was noticed to all spectra containing low amount of V<sub>2</sub>O<sub>5.</sub> 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 V<sub>2</sub>O<sub>5</sub> content. The results of magnetic susceptibility measurements explain the antiferromagnetic or ferromagnetic interactions expressed between the iron and vanadium ions in the investigated glass. |
| first_indexed | 2024-03-11T04:55:48Z |
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| id | doaj.art-1b9275277aeb480db929b6e0b1b0acae |
| institution | Directory Open Access Journal |
| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-11T04:55:48Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Molecular Sciences |
| spelling | doaj.art-1b9275277aeb480db929b6e0b1b0acae2023-11-17T19:39:23ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672023-04-01248736610.3390/ijms24087366Influence of the Structure on Magnetic Properties of Calcium-Phosphate Systems Doped with Iron and Vanadium IonsDania Racolta0Constantin Andronache1Maria Balasoiu2Leonard Mihaly-Cozmuta3Vadim Sikolenko4Oleg Orelovich5Andrey Rogachev6Gheorghe Borodi7Gheorghe Iepure8Faculty of Sciences, North University Center Baia Mare, Technical University of Cluj Napoca, 430122 Baia Mare, RomaniaFaculty of Sciences, North University Center Baia Mare, Technical University of Cluj Napoca, 430122 Baia Mare, RomaniaJoint Institute for Nuclear Research, Dubna 141980, RussiaFaculty of Sciences, North University Center Baia Mare, Technical University of Cluj Napoca, 430122 Baia Mare, RomaniaJoint Institute for Nuclear Research, Dubna 141980, RussiaJoint Institute for Nuclear Research, Dubna 141980, RussiaJoint Institute for Nuclear Research, Dubna 141980, RussiaNational Institute for Research and Development of Isotopic and Molecular Technologies, 400293 Cluj-Napoca, RomaniaFaculty of Sciences, North University Center Baia Mare, Technical University of Cluj Napoca, 430122 Baia Mare, RomaniaThe aim of this study was to prepare and characterize the glasses made of x(Fe<sub>2</sub>O<sub>3</sub>∙V<sub>2</sub>O<sub>5</sub>)∙(100 − x)[P<sub>2</sub>O<sub>5</sub>∙CaO] with x ranging of 0–50%. The contribution of Fe<sub>2</sub>O<sub>3</sub> and V<sub>2</sub>O<sub>5</sub> amount on the structure of P<sub>2</sub>O<sub>5</sub>·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 V<sup>4+</sup> ions was noticed to all spectra containing low amount of V<sub>2</sub>O<sub>5.</sub> 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 V<sub>2</sub>O<sub>5</sub> content. The results of magnetic susceptibility measurements explain the antiferromagnetic or ferromagnetic interactions expressed between the iron and vanadium ions in the investigated glass.https://www.mdpi.com/1422-0067/24/8/7366calcium phosphate glassesXRDEPRmagnetic susceptibility |
| spellingShingle | Dania Racolta Constantin Andronache Maria Balasoiu Leonard Mihaly-Cozmuta Vadim Sikolenko Oleg Orelovich Andrey Rogachev Gheorghe Borodi Gheorghe Iepure Influence of the Structure on Magnetic Properties of Calcium-Phosphate Systems Doped with Iron and Vanadium Ions International Journal of Molecular Sciences calcium phosphate glasses XRD EPR magnetic susceptibility |
| title | Influence of the Structure on Magnetic Properties of Calcium-Phosphate Systems Doped with Iron and Vanadium Ions |
| title_full | Influence of the Structure on Magnetic Properties of Calcium-Phosphate Systems Doped with Iron and Vanadium Ions |
| title_fullStr | Influence of the Structure on Magnetic Properties of Calcium-Phosphate Systems Doped with Iron and Vanadium Ions |
| title_full_unstemmed | Influence of the Structure on Magnetic Properties of Calcium-Phosphate Systems Doped with Iron and Vanadium Ions |
| title_short | Influence of the Structure on Magnetic Properties of Calcium-Phosphate Systems Doped with Iron and Vanadium Ions |
| title_sort | influence of the structure on magnetic properties of calcium phosphate systems doped with iron and vanadium ions |
| topic | calcium phosphate glasses XRD EPR magnetic susceptibility |
| url | https://www.mdpi.com/1422-0067/24/8/7366 |
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