Synthesis of Superhydrophobic Barium Hexaferrite Coatings with Low Magnetic Hardness
Using the multifunctional material barium hexaferrite as an example, the prospects for treatment at a quasi-equilibrium low temperature in an open atmosphere to form superhydrophobic magnetic coatings with pronounced crystalline and magnetic anisotropy have been demonstrated for the first time. The...
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MDPI AG
2022-11-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/21/7865 |
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| author | Arsen E. Muslimov Makhach Kh Gadzhiev Vladimir M. Kanevsky |
| author_facet | Arsen E. Muslimov Makhach Kh Gadzhiev Vladimir M. Kanevsky |
| author_sort | Arsen E. Muslimov |
| collection | DOAJ |
| description | Using the multifunctional material barium hexaferrite as an example, the prospects for treatment at a quasi-equilibrium low temperature in an open atmosphere to form superhydrophobic magnetic coatings with pronounced crystalline and magnetic anisotropy have been demonstrated for the first time. The relationship between plasma treatment conditions, structural-phase composition, morphology, and superhydrophobic properties of (0001) films of barium hexaferrite BaFe<sub>12</sub>O<sub>19</sub> on C-sapphire is studied. X-ray photoelectron spectroscopy (XPS), X-ray diffractometry (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), as well as magnetometry and moisture resistance analysis, were used as research methods. During plasma treatment with a mass-average temperature of 8–10 kK, intense evaporation and surface melting were observed, and texturing of the deposit along (0001) is found. When the treatment temperature was reduced to 4–5 kK, the evaporation of the material was minimized and magnetic and crystal anisotropy increased. However, the increase in the size of crystallites was accompanied by the transition of oxygen atoms from lattice nodes to interstitial positions. All samples exhibited low coercive fields below 500 Oe, associated with the frustration of the magnetic subsystem. Features of growth of materials with a wurtzite structure were used to form a superhydrophobic coating of barium hexaferrite. Plasma treatment regimes for obtaining self-cleaning coatings are proposed. The use of magnetically hard barium hexaferrite to radically change the properties of a coating is demonstrated herein as an example. |
| first_indexed | 2024-03-09T18:53:10Z |
| format | Article |
| id | doaj.art-bac47c6ffca34a5ebb45168cb3b81653 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T18:53:10Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-bac47c6ffca34a5ebb45168cb3b816532023-11-24T05:42:03ZengMDPI AGMaterials1996-19442022-11-011521786510.3390/ma15217865Synthesis of Superhydrophobic Barium Hexaferrite Coatings with Low Magnetic HardnessArsen E. Muslimov0Makhach Kh Gadzhiev1Vladimir M. Kanevsky2Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences, Shubnikov Institute of Crystallography, 119333 Moscow, RussiaJoint Institute for High Temperatures, Russian Academy of Sciences, 125412 Moscow, RussiaFederal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences, Shubnikov Institute of Crystallography, 119333 Moscow, RussiaUsing the multifunctional material barium hexaferrite as an example, the prospects for treatment at a quasi-equilibrium low temperature in an open atmosphere to form superhydrophobic magnetic coatings with pronounced crystalline and magnetic anisotropy have been demonstrated for the first time. The relationship between plasma treatment conditions, structural-phase composition, morphology, and superhydrophobic properties of (0001) films of barium hexaferrite BaFe<sub>12</sub>O<sub>19</sub> on C-sapphire is studied. X-ray photoelectron spectroscopy (XPS), X-ray diffractometry (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), as well as magnetometry and moisture resistance analysis, were used as research methods. During plasma treatment with a mass-average temperature of 8–10 kK, intense evaporation and surface melting were observed, and texturing of the deposit along (0001) is found. When the treatment temperature was reduced to 4–5 kK, the evaporation of the material was minimized and magnetic and crystal anisotropy increased. However, the increase in the size of crystallites was accompanied by the transition of oxygen atoms from lattice nodes to interstitial positions. All samples exhibited low coercive fields below 500 Oe, associated with the frustration of the magnetic subsystem. Features of growth of materials with a wurtzite structure were used to form a superhydrophobic coating of barium hexaferrite. Plasma treatment regimes for obtaining self-cleaning coatings are proposed. The use of magnetically hard barium hexaferrite to radically change the properties of a coating is demonstrated herein as an example.https://www.mdpi.com/1996-1944/15/21/7865barium hexaferritesapphiremagnetron depositionlow-temperature plasmamagnetizationsuperhydrophobicity |
| spellingShingle | Arsen E. Muslimov Makhach Kh Gadzhiev Vladimir M. Kanevsky Synthesis of Superhydrophobic Barium Hexaferrite Coatings with Low Magnetic Hardness Materials barium hexaferrite sapphire magnetron deposition low-temperature plasma magnetization superhydrophobicity |
| title | Synthesis of Superhydrophobic Barium Hexaferrite Coatings with Low Magnetic Hardness |
| title_full | Synthesis of Superhydrophobic Barium Hexaferrite Coatings with Low Magnetic Hardness |
| title_fullStr | Synthesis of Superhydrophobic Barium Hexaferrite Coatings with Low Magnetic Hardness |
| title_full_unstemmed | Synthesis of Superhydrophobic Barium Hexaferrite Coatings with Low Magnetic Hardness |
| title_short | Synthesis of Superhydrophobic Barium Hexaferrite Coatings with Low Magnetic Hardness |
| title_sort | synthesis of superhydrophobic barium hexaferrite coatings with low magnetic hardness |
| topic | barium hexaferrite sapphire magnetron deposition low-temperature plasma magnetization superhydrophobicity |
| url | https://www.mdpi.com/1996-1944/15/21/7865 |
| work_keys_str_mv | AT arsenemuslimov synthesisofsuperhydrophobicbariumhexaferritecoatingswithlowmagnetichardness AT makhachkhgadzhiev synthesisofsuperhydrophobicbariumhexaferritecoatingswithlowmagnetichardness AT vladimirmkanevsky synthesisofsuperhydrophobicbariumhexaferritecoatingswithlowmagnetichardness |