Electron paramagnetic resonance and X-ray diffraction study of PbF2 fine powders mechanochemically doped with Er3+ ions
Investigation of the mechanochemical doping of PbF2 powders with Er3+ ions with electron paramagnetic resonance and X-ray diffraction is presented. In the analysis of the results a possibility of the structural transformation between the cubic β-PbF2 and orthorhombic α-PbF2 phases in the course of s...
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| Format: | Article |
| Language: | English |
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Kazan Federal University
2018-12-01
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| Series: | Magnetic Resonance in Solids |
| Subjects: | |
| Online Access: | http://mrsej.kpfu.ru/contents/2017/MRSej_17209.pdf |
| _version_ | 1818939871924846592 |
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| author | I.A. Irisova I.N. Gracheva .V. Lysogorskiy A.A. Shinkarev A.A. Rodionov D.A. Tayurskii R.V. Yusupov |
| author_facet | I.A. Irisova I.N. Gracheva .V. Lysogorskiy A.A. Shinkarev A.A. Rodionov D.A. Tayurskii R.V. Yusupov |
| author_sort | I.A. Irisova |
| collection | DOAJ |
| description | Investigation of the mechanochemical doping of PbF2 powders with Er3+ ions with electron paramagnetic resonance and X-ray diffraction is presented. In the analysis of the results a possibility of the structural transformation between the cubic β-PbF2 and orthorhombic α-PbF2 phases in the course of synthesis was taken into account. It is shown that regardless of the initial state of PbF2 it reveals high efficiency of the mechanochemical doping with Er3+ ions. Obtained particles are found in (α/β)-PbF2 structurally inhomogeneous state with the majority of the Er3+ ions located in the equilibrium α-PbF2 fraction. Preferrable location of the Er3+ ions in the α-PbF2 phase is related to the fact that the formation of the cation vacancies necessary for a mechanically activated diffusion of erbium ions into the particles and nucleation of the α-PbF2 phase proceed in parallel and is mediated by dislocations created in the course of synthesis. Annealing of the sample leads to a conversion of its entire volume into the metastable β-PbF2 phase with all the Er3+ centers possessing the cubic symmetry. |
| first_indexed | 2024-12-20T06:30:38Z |
| format | Article |
| id | doaj.art-8ccb7d8e810d49c78c118746236ca40e |
| institution | Directory Open Access Journal |
| issn | 2072-5981 |
| language | English |
| last_indexed | 2024-12-20T06:30:38Z |
| publishDate | 2018-12-01 |
| publisher | Kazan Federal University |
| record_format | Article |
| series | Magnetic Resonance in Solids |
| spelling | doaj.art-8ccb7d8e810d49c78c118746236ca40e2022-12-21T19:50:10ZengKazan Federal UniversityMagnetic Resonance in Solids2072-59812018-12-0119217209Electron paramagnetic resonance and X-ray diffraction study of PbF2 fine powders mechanochemically doped with Er3+ ionsI.A. Irisova0I.N. Gracheva1.V. Lysogorskiy2A.A. Shinkarev3A.A. Rodionov4D.A. Tayurskii5R.V. Yusupov6Kazan Federal University, Kremlevskaya 18, Kazan 420008, RussiaKazan Federal University, Kremlevskaya 18, Kazan 420008, RussiaKazan Federal University, Kremlevskaya 18, Kazan 420008, RussiaKazan National Research Technological University, K. Marx str. 68, 420015 Kazan, RussiaKazan Federal University, Kremlevskaya 18, Kazan 420008, RussiaKazan Federal University, Kremlevskaya 18, Kazan 420008, RussiaKazan Federal University, Kremlevskaya 18, Kazan 420008, RussiaInvestigation of the mechanochemical doping of PbF2 powders with Er3+ ions with electron paramagnetic resonance and X-ray diffraction is presented. In the analysis of the results a possibility of the structural transformation between the cubic β-PbF2 and orthorhombic α-PbF2 phases in the course of synthesis was taken into account. It is shown that regardless of the initial state of PbF2 it reveals high efficiency of the mechanochemical doping with Er3+ ions. Obtained particles are found in (α/β)-PbF2 structurally inhomogeneous state with the majority of the Er3+ ions located in the equilibrium α-PbF2 fraction. Preferrable location of the Er3+ ions in the α-PbF2 phase is related to the fact that the formation of the cation vacancies necessary for a mechanically activated diffusion of erbium ions into the particles and nucleation of the α-PbF2 phase proceed in parallel and is mediated by dislocations created in the course of synthesis. Annealing of the sample leads to a conversion of its entire volume into the metastable β-PbF2 phase with all the Er3+ centers possessing the cubic symmetry.http://mrsej.kpfu.ru/contents/2017/MRSej_17209.pdffluoriterare-earth ionsmechanically activated dopingelectron paramagnetic resonance |
| spellingShingle | I.A. Irisova I.N. Gracheva .V. Lysogorskiy A.A. Shinkarev A.A. Rodionov D.A. Tayurskii R.V. Yusupov Electron paramagnetic resonance and X-ray diffraction study of PbF2 fine powders mechanochemically doped with Er3+ ions Magnetic Resonance in Solids fluorite rare-earth ions mechanically activated doping electron paramagnetic resonance |
| title | Electron paramagnetic resonance and X-ray diffraction study of PbF2 fine powders mechanochemically doped with Er3+ ions |
| title_full | Electron paramagnetic resonance and X-ray diffraction study of PbF2 fine powders mechanochemically doped with Er3+ ions |
| title_fullStr | Electron paramagnetic resonance and X-ray diffraction study of PbF2 fine powders mechanochemically doped with Er3+ ions |
| title_full_unstemmed | Electron paramagnetic resonance and X-ray diffraction study of PbF2 fine powders mechanochemically doped with Er3+ ions |
| title_short | Electron paramagnetic resonance and X-ray diffraction study of PbF2 fine powders mechanochemically doped with Er3+ ions |
| title_sort | electron paramagnetic resonance and x ray diffraction study of pbf2 fine powders mechanochemically doped with er3 ions |
| topic | fluorite rare-earth ions mechanically activated doping electron paramagnetic resonance |
| url | http://mrsej.kpfu.ru/contents/2017/MRSej_17209.pdf |
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