Low-temperature relaxation of various samarium phosphate glasses
Glasses constructed, (1 − x) (0.6595P2O5–0.0958ZnO–0.2447PbO) · xSm2O3 with x = 0.00, 0.0045, 0.0089, 0.0132, and 0.0261 mol%, had been created to investigate the attenuation of longitudinal ultrasonic waves at 2, 4, 6, and 14 MHz frequencies between 120 and 300 K. At a variety of temperatures, clea...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2023-11-01
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| Series: | Journal of the Mechanical Behavior of Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/jmbm-2022-0292 |
| _version_ | 1797435639908532224 |
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| author | Gaafar Mohamed El-Sayed Marzouk Samir Yousef |
| author_facet | Gaafar Mohamed El-Sayed Marzouk Samir Yousef |
| author_sort | Gaafar Mohamed El-Sayed |
| collection | DOAJ |
| description | Glasses constructed, (1 − x) (0.6595P2O5–0.0958ZnO–0.2447PbO) · xSm2O3 with x = 0.00, 0.0045, 0.0089, 0.0132, and 0.0261 mol%, had been created to investigate the attenuation of longitudinal ultrasonic waves at 2, 4, 6, and 14 MHz frequencies between 120 and 300 K. At a variety of temperatures, clear peaks of a large absorption curve have been seen. These peaks are dependent on the structure of the glass as well as the switching frequency. Maximum peaks have been shown to shift to higher temperatures, and the increase in overall frequency points to the presence of some kind of relaxation process. A thermally induced relaxation process is responsible for producing a calm approach, which has been identified as a result of this mechanism. A quiet approach has been defined as a consequence of a thermally triggered relaxation mechanism. The variance of the mean energy of activation of the mechanism counts on primarily the amount of Sm2O3 mol%. Such dependency has been evaluated based on the loss of normal linear solid form, attaining low dispersion, and a large allocation of Arrhenius kind relaxation through temperature-autonomous relaxation power. The measured acoustical energy of activation values have been quantifiably represented based on the number of loss centers (amount of oxygen atoms that now move at a double-well potential). |
| first_indexed | 2024-03-09T10:51:09Z |
| format | Article |
| id | doaj.art-1d54e676c55d42708a7b1603bcd90452 |
| institution | Directory Open Access Journal |
| issn | 2191-0243 |
| language | English |
| last_indexed | 2024-03-09T10:51:09Z |
| publishDate | 2023-11-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Journal of the Mechanical Behavior of Materials |
| spelling | doaj.art-1d54e676c55d42708a7b1603bcd904522023-12-01T07:18:34ZengDe GruyterJournal of the Mechanical Behavior of Materials2191-02432023-11-013211213307410.1515/jmbm-2022-0292Low-temperature relaxation of various samarium phosphate glassesGaafar Mohamed El-Sayed0Marzouk Samir Yousef1Ultrasonic Department, National Institute of Standards, Tersa Street, P. O. Box 136, El-Haram, El-Giza12211, EgyptFaculty of Engineering, Arab Academy of Science and Technology, Al-Horria, Heliopolis, Cairo, EgyptGlasses constructed, (1 − x) (0.6595P2O5–0.0958ZnO–0.2447PbO) · xSm2O3 with x = 0.00, 0.0045, 0.0089, 0.0132, and 0.0261 mol%, had been created to investigate the attenuation of longitudinal ultrasonic waves at 2, 4, 6, and 14 MHz frequencies between 120 and 300 K. At a variety of temperatures, clear peaks of a large absorption curve have been seen. These peaks are dependent on the structure of the glass as well as the switching frequency. Maximum peaks have been shown to shift to higher temperatures, and the increase in overall frequency points to the presence of some kind of relaxation process. A thermally induced relaxation process is responsible for producing a calm approach, which has been identified as a result of this mechanism. A quiet approach has been defined as a consequence of a thermally triggered relaxation mechanism. The variance of the mean energy of activation of the mechanism counts on primarily the amount of Sm2O3 mol%. Such dependency has been evaluated based on the loss of normal linear solid form, attaining low dispersion, and a large allocation of Arrhenius kind relaxation through temperature-autonomous relaxation power. The measured acoustical energy of activation values have been quantifiably represented based on the number of loss centers (amount of oxygen atoms that now move at a double-well potential).https://doi.org/10.1515/jmbm-2022-0292samarium phosphate glassesrelaxation processattenuation coefficientrelaxation strength |
| spellingShingle | Gaafar Mohamed El-Sayed Marzouk Samir Yousef Low-temperature relaxation of various samarium phosphate glasses Journal of the Mechanical Behavior of Materials samarium phosphate glasses relaxation process attenuation coefficient relaxation strength |
| title | Low-temperature relaxation of various samarium phosphate glasses |
| title_full | Low-temperature relaxation of various samarium phosphate glasses |
| title_fullStr | Low-temperature relaxation of various samarium phosphate glasses |
| title_full_unstemmed | Low-temperature relaxation of various samarium phosphate glasses |
| title_short | Low-temperature relaxation of various samarium phosphate glasses |
| title_sort | low temperature relaxation of various samarium phosphate glasses |
| topic | samarium phosphate glasses relaxation process attenuation coefficient relaxation strength |
| url | https://doi.org/10.1515/jmbm-2022-0292 |
| work_keys_str_mv | AT gaafarmohamedelsayed lowtemperaturerelaxationofvarioussamariumphosphateglasses AT marzouksamiryousef lowtemperaturerelaxationofvarioussamariumphosphateglasses |