Uniformity of Thermoluminescence and Optically Stimulated Luminescence Signals Over the Length of Doped LiMgPO<sub>4</sub> Crystal Rods Grown by Micro-Pulling-Down Method
The purpose of this work was to systematically assess the distribution of thermoluminescence (TL) and optically stimulated luminescence (OSL) properties along the length of crystals grown by the micro-pulling-down method, in relation to the microstructure and distribution of activators. We analyzed...
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2020-12-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/1/132 |
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| author | Barbara Marczewska Wojciech Gieszczyk Mariusz Kłosowski Marzanna Książek Paweł Bilski Łukasz Boroń |
| author_facet | Barbara Marczewska Wojciech Gieszczyk Mariusz Kłosowski Marzanna Książek Paweł Bilski Łukasz Boroń |
| author_sort | Barbara Marczewska |
| collection | DOAJ |
| description | The purpose of this work was to systematically assess the distribution of thermoluminescence (TL) and optically stimulated luminescence (OSL) properties along the length of crystals grown by the micro-pulling-down method, in relation to the microstructure and distribution of activators. We analyzed lithium magnesium phosphate (LiMgPO<sub>4</sub>; LMP) crystals doped with terbium (Tb; 0.8 mol%) or with a combination of thulium (Tm; 0.8 mol% or 1.2 mol%) and boron (B; 10 mol%). Crystals of several centimeters in length and 3 mm in diameter were cut into 20–40 slices, depending on length. For each sample, TL glow curves and OSL decay curves were examined. Optical microscopy and scanning electron microscopy were used to assess the microstructure and elemental composition of several selected samples. Two-dimensional TL readouts were performed to identify the areas with higher and lower signal emission. Our study showed that there may be significant differences not only in LMP sensitivity along the crystal’s axis but also on the surface of the slice. The distribution of activators varies depending on the type of crystals and strongly affects luminescence properties. |
| first_indexed | 2024-03-10T13:39:51Z |
| format | Article |
| id | doaj.art-8f8b9ddcf2a54effaa284b3ef34b9679 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T13:39:51Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-8f8b9ddcf2a54effaa284b3ef34b96792023-11-21T03:09:48ZengMDPI AGMaterials1996-19442020-12-0114113210.3390/ma14010132Uniformity of Thermoluminescence and Optically Stimulated Luminescence Signals Over the Length of Doped LiMgPO<sub>4</sub> Crystal Rods Grown by Micro-Pulling-Down MethodBarbara Marczewska0Wojciech Gieszczyk1Mariusz Kłosowski2Marzanna Książek3Paweł Bilski4Łukasz Boroń5Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, 31-342 Krakow, PolandInstitute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, 31-342 Krakow, PolandInstitute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, 31-342 Krakow, PolandDepartment of Non-Ferrous Metals, AGH University of Science and Technology, 30 Mickiewicza Ave., 30-059 Krakow, PolandInstitute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, 31-342 Krakow, PolandŁukasiewicz Research Network, Łukasiewicz—Krakow Institute of Technology, 73 Zakopianska St., 30-418 Krakow, PolandThe purpose of this work was to systematically assess the distribution of thermoluminescence (TL) and optically stimulated luminescence (OSL) properties along the length of crystals grown by the micro-pulling-down method, in relation to the microstructure and distribution of activators. We analyzed lithium magnesium phosphate (LiMgPO<sub>4</sub>; LMP) crystals doped with terbium (Tb; 0.8 mol%) or with a combination of thulium (Tm; 0.8 mol% or 1.2 mol%) and boron (B; 10 mol%). Crystals of several centimeters in length and 3 mm in diameter were cut into 20–40 slices, depending on length. For each sample, TL glow curves and OSL decay curves were examined. Optical microscopy and scanning electron microscopy were used to assess the microstructure and elemental composition of several selected samples. Two-dimensional TL readouts were performed to identify the areas with higher and lower signal emission. Our study showed that there may be significant differences not only in LMP sensitivity along the crystal’s axis but also on the surface of the slice. The distribution of activators varies depending on the type of crystals and strongly affects luminescence properties.https://www.mdpi.com/1996-1944/14/1/132micro-pulling-down methodLiMgPO<sub>4</sub> crystalsTm or Tb dopingTLOSL |
| spellingShingle | Barbara Marczewska Wojciech Gieszczyk Mariusz Kłosowski Marzanna Książek Paweł Bilski Łukasz Boroń Uniformity of Thermoluminescence and Optically Stimulated Luminescence Signals Over the Length of Doped LiMgPO<sub>4</sub> Crystal Rods Grown by Micro-Pulling-Down Method Materials micro-pulling-down method LiMgPO<sub>4</sub> crystals Tm or Tb doping TL OSL |
| title | Uniformity of Thermoluminescence and Optically Stimulated Luminescence Signals Over the Length of Doped LiMgPO<sub>4</sub> Crystal Rods Grown by Micro-Pulling-Down Method |
| title_full | Uniformity of Thermoluminescence and Optically Stimulated Luminescence Signals Over the Length of Doped LiMgPO<sub>4</sub> Crystal Rods Grown by Micro-Pulling-Down Method |
| title_fullStr | Uniformity of Thermoluminescence and Optically Stimulated Luminescence Signals Over the Length of Doped LiMgPO<sub>4</sub> Crystal Rods Grown by Micro-Pulling-Down Method |
| title_full_unstemmed | Uniformity of Thermoluminescence and Optically Stimulated Luminescence Signals Over the Length of Doped LiMgPO<sub>4</sub> Crystal Rods Grown by Micro-Pulling-Down Method |
| title_short | Uniformity of Thermoluminescence and Optically Stimulated Luminescence Signals Over the Length of Doped LiMgPO<sub>4</sub> Crystal Rods Grown by Micro-Pulling-Down Method |
| title_sort | uniformity of thermoluminescence and optically stimulated luminescence signals over the length of doped limgpo sub 4 sub crystal rods grown by micro pulling down method |
| topic | micro-pulling-down method LiMgPO<sub>4</sub> crystals Tm or Tb doping TL OSL |
| url | https://www.mdpi.com/1996-1944/14/1/132 |
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