Luminescence Properties of Tetrahedral Coordinated Mn<sup>2+</sup>; Genthelvite and Willemite Examples
The cause of the split of <sup>4</sup>A<sup>4</sup>E(<sup>4</sup>G) Mn<sup>2+</sup> excited level measured on minerals spectra is discussed. It is our view that ∆<i>E</i> = |4E(4G) − 4A(4G)| should be considered an important spectroscopic p...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-10-01
|
| Series: | Minerals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-163X/11/11/1215 |
| _version_ | 1797509266735628288 |
|---|---|
| author | Maria Czaja Radosław Lisiecki Rafał Juroszek Tomasz Krzykawski |
| author_facet | Maria Czaja Radosław Lisiecki Rafał Juroszek Tomasz Krzykawski |
| author_sort | Maria Czaja |
| collection | DOAJ |
| description | The cause of the split of <sup>4</sup>A<sup>4</sup>E(<sup>4</sup>G) Mn<sup>2+</sup> excited level measured on minerals spectra is discussed. It is our view that ∆<i>E</i> = |4E(4G) − 4A(4G)| should be considered an important spectroscopic parameter. Among the possible reasons for the energy levels splitting taken under consideration, such as the covalent bond theory, the geometric deformation of the coordination polyhedron and the lattice site’s symmetry, the first one was found to be inappropriate. Two studied willemite samples showed that the impurities occur in one of the two available lattice sites differently in both crystals. Moreover, it was revealed that the calculated crystal field <i>Dq</i> parameter can indicate which of the two non-equivalent lattice sites positions in the willemite crystal structure was occupied by Mn<sup>2+</sup>. The above conclusions were confirmed by X-ray structure measurements. Significant differences were also noted in the Raman spectra of these willemites. |
| first_indexed | 2024-03-10T05:15:16Z |
| format | Article |
| id | doaj.art-ed4507d88767402caaf06214aa18014d |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-10T05:15:16Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-ed4507d88767402caaf06214aa18014d2023-11-23T00:32:01ZengMDPI AGMinerals2075-163X2021-10-011111121510.3390/min11111215Luminescence Properties of Tetrahedral Coordinated Mn<sup>2+</sup>; Genthelvite and Willemite ExamplesMaria Czaja0Radosław Lisiecki1Rafał Juroszek2Tomasz Krzykawski3Institute of Earth Sciences, Faculty of Natural Science, University of Silesia, Będzińska 60, 41-200 Sosnowiec, PolandInstitute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, PolandInstitute of Earth Sciences, Faculty of Natural Science, University of Silesia, Będzińska 60, 41-200 Sosnowiec, PolandInstitute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, PolandThe cause of the split of <sup>4</sup>A<sup>4</sup>E(<sup>4</sup>G) Mn<sup>2+</sup> excited level measured on minerals spectra is discussed. It is our view that ∆<i>E</i> = |4E(4G) − 4A(4G)| should be considered an important spectroscopic parameter. Among the possible reasons for the energy levels splitting taken under consideration, such as the covalent bond theory, the geometric deformation of the coordination polyhedron and the lattice site’s symmetry, the first one was found to be inappropriate. Two studied willemite samples showed that the impurities occur in one of the two available lattice sites differently in both crystals. Moreover, it was revealed that the calculated crystal field <i>Dq</i> parameter can indicate which of the two non-equivalent lattice sites positions in the willemite crystal structure was occupied by Mn<sup>2+</sup>. The above conclusions were confirmed by X-ray structure measurements. Significant differences were also noted in the Raman spectra of these willemites.https://www.mdpi.com/2075-163X/11/11/1215Mn<sup>2+</sup>luminescenceenergy of excited levelcrystal field parameters |
| spellingShingle | Maria Czaja Radosław Lisiecki Rafał Juroszek Tomasz Krzykawski Luminescence Properties of Tetrahedral Coordinated Mn<sup>2+</sup>; Genthelvite and Willemite Examples Minerals Mn<sup>2+</sup> luminescence energy of excited level crystal field parameters |
| title | Luminescence Properties of Tetrahedral Coordinated Mn<sup>2+</sup>; Genthelvite and Willemite Examples |
| title_full | Luminescence Properties of Tetrahedral Coordinated Mn<sup>2+</sup>; Genthelvite and Willemite Examples |
| title_fullStr | Luminescence Properties of Tetrahedral Coordinated Mn<sup>2+</sup>; Genthelvite and Willemite Examples |
| title_full_unstemmed | Luminescence Properties of Tetrahedral Coordinated Mn<sup>2+</sup>; Genthelvite and Willemite Examples |
| title_short | Luminescence Properties of Tetrahedral Coordinated Mn<sup>2+</sup>; Genthelvite and Willemite Examples |
| title_sort | luminescence properties of tetrahedral coordinated mn sup 2 sup genthelvite and willemite examples |
| topic | Mn<sup>2+</sup> luminescence energy of excited level crystal field parameters |
| url | https://www.mdpi.com/2075-163X/11/11/1215 |
| work_keys_str_mv | AT mariaczaja luminescencepropertiesoftetrahedralcoordinatedmnsup2supgenthelviteandwillemiteexamples AT radosławlisiecki luminescencepropertiesoftetrahedralcoordinatedmnsup2supgenthelviteandwillemiteexamples AT rafałjuroszek luminescencepropertiesoftetrahedralcoordinatedmnsup2supgenthelviteandwillemiteexamples AT tomaszkrzykawski luminescencepropertiesoftetrahedralcoordinatedmnsup2supgenthelviteandwillemiteexamples |