Mechanically induced defects in milled CdZnSe nanocrystal: a low-temperature electron spin resonance spectroscopy analysis
The electron spin resonance (ESR) linewidth of the milled powder decreases as a function of increasing temperature. On the other hand, the intensity of the signal increases with increasing temperature from 108 K to 243 K and subsequently approaches Curie-like temperature behavior above 245 K. These...
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| Format: | Article |
| Language: | English |
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Elsevier
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/62381/1/Mechanically%20induced%20defects%20in%20milled%20CdZnSe%20nanocrystal.pdf |
| _version_ | 1825932482020638720 |
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| author | Muh'd, Ibrahim Bagudo Talib, Zainal Abidin Liew, Josephine Ying Chyi |
| author_facet | Muh'd, Ibrahim Bagudo Talib, Zainal Abidin Liew, Josephine Ying Chyi |
| author_sort | Muh'd, Ibrahim Bagudo |
| collection | UPM |
| description | The electron spin resonance (ESR) linewidth of the milled powder decreases as a function of increasing temperature. On the other hand, the intensity of the signal increases with increasing temperature from 108 K to 243 K and subsequently approaches Curie-like temperature behavior above 245 K. These behaviors were understood in terms of the orbital degeneracy of fast-relaxing impurities, such as Fe3+ ion debris, from the grinding media that was embedded in the atomic structure of the milled powder and are not completely quenched. At lower temperature, only ±1/2 is occupied and the excited energy state is less likely effective in dipolar broadening compared with lower energy states of ±5/2 and ±3/2. In this regard, decrease in linewidth should be expected with increasing temperature. |
| first_indexed | 2024-03-06T09:42:42Z |
| format | Article |
| id | upm.eprints-62381 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:42:42Z |
| publishDate | 2017 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | upm.eprints-623812020-01-08T06:11:10Z http://psasir.upm.edu.my/id/eprint/62381/ Mechanically induced defects in milled CdZnSe nanocrystal: a low-temperature electron spin resonance spectroscopy analysis Muh'd, Ibrahim Bagudo Talib, Zainal Abidin Liew, Josephine Ying Chyi The electron spin resonance (ESR) linewidth of the milled powder decreases as a function of increasing temperature. On the other hand, the intensity of the signal increases with increasing temperature from 108 K to 243 K and subsequently approaches Curie-like temperature behavior above 245 K. These behaviors were understood in terms of the orbital degeneracy of fast-relaxing impurities, such as Fe3+ ion debris, from the grinding media that was embedded in the atomic structure of the milled powder and are not completely quenched. At lower temperature, only ±1/2 is occupied and the excited energy state is less likely effective in dipolar broadening compared with lower energy states of ±5/2 and ±3/2. In this regard, decrease in linewidth should be expected with increasing temperature. Elsevier 2017 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/62381/1/Mechanically%20induced%20defects%20in%20milled%20CdZnSe%20nanocrystal.pdf Muh'd, Ibrahim Bagudo and Talib, Zainal Abidin and Liew, Josephine Ying Chyi (2017) Mechanically induced defects in milled CdZnSe nanocrystal: a low-temperature electron spin resonance spectroscopy analysis. Results in Physics, 7. 1357 - 1360. ISSN 2211-3797 https://www.sciencedirect.com/science/article/pii/S2211379716304442 10.1016/j.rinp.2017.03.015 |
| spellingShingle | Muh'd, Ibrahim Bagudo Talib, Zainal Abidin Liew, Josephine Ying Chyi Mechanically induced defects in milled CdZnSe nanocrystal: a low-temperature electron spin resonance spectroscopy analysis |
| title | Mechanically induced defects in milled CdZnSe nanocrystal: a low-temperature electron spin resonance spectroscopy analysis |
| title_full | Mechanically induced defects in milled CdZnSe nanocrystal: a low-temperature electron spin resonance spectroscopy analysis |
| title_fullStr | Mechanically induced defects in milled CdZnSe nanocrystal: a low-temperature electron spin resonance spectroscopy analysis |
| title_full_unstemmed | Mechanically induced defects in milled CdZnSe nanocrystal: a low-temperature electron spin resonance spectroscopy analysis |
| title_short | Mechanically induced defects in milled CdZnSe nanocrystal: a low-temperature electron spin resonance spectroscopy analysis |
| title_sort | mechanically induced defects in milled cdznse nanocrystal a low temperature electron spin resonance spectroscopy analysis |
| url | http://psasir.upm.edu.my/id/eprint/62381/1/Mechanically%20induced%20defects%20in%20milled%20CdZnSe%20nanocrystal.pdf |
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