Structural and Spectroscopic Characterization of Tb3+-Doped MgAl2O4 Spinel Ceramics Fabricated by Spark Plasma Sintering Technique; Physica Status Solidi (B); Vol. 257, iss. 8
| Parent link: | Physica Status Solidi (B) Vol. 257, iss. 8.— 2020.— [1900471, 6 p.] |
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| Další autoři: | , , , , , |
| Shrnutí: | Title screen Spark plasma sintering (SPS) technique is successfully used for the preparation of magnesium aluminate spinel ceramics doped with different concentrations of Tb3+ ions. Structural, morphological, optical, and photoluminescence (PL) characterization are conducted. It is demonstrated that the redshift in the absorption spectra is possibly due to the energy gap between the valence and conduction bands reducing and the formation of a higher concentration of nonbridging oxygen with an increase in the concentrations of Tb3+ ions in MgAl2O4 ceramics. The PL spectrum excited by nitrogen laser consists of a broad emission band with a maximum at ?em??400?nm and a series of emission bands in the 400–700?nm spectral range responsible for Tb3+ ions. In the “blue” spectral region, the complex host centers such as oxygen vacancies are recorded. An increase in the terbium ion concentration does not lead to the effect of concentration quenching. Luminescence decay kinetics analysis for all ceramics samples is performed. The effect of terbium oxide on the optical, PL properties and luminescence decay kinetics of MgAl2O4 ceramics is discussed. |
| Jazyk: | angličtina |
| Vydáno: |
2020
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| Témata: | |
| On-line přístup: | https://doi.org/10.1002/pssb.201900471 |
| Médium: | Elektronický zdroj Kapitola |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662597 |
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| 200 | 1 | |a Structural and Spectroscopic Characterization of Tb3+-Doped MgAl2O4 Spinel Ceramics Fabricated by Spark Plasma Sintering Technique |f D. T. Valiev, O. L. Khasanov, E. S. Dvilis [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 44 tit.] | ||
| 330 | |a Spark plasma sintering (SPS) technique is successfully used for the preparation of magnesium aluminate spinel ceramics doped with different concentrations of Tb3+ ions. Structural, morphological, optical, and photoluminescence (PL) characterization are conducted. It is demonstrated that the redshift in the absorption spectra is possibly due to the energy gap between the valence and conduction bands reducing and the formation of a higher concentration of nonbridging oxygen with an increase in the concentrations of Tb3+ ions in MgAl2O4 ceramics. The PL spectrum excited by nitrogen laser consists of a broad emission band with a maximum at ?em??400?nm and a series of emission bands in the 400–700?nm spectral range responsible for Tb3+ ions. In the “blue” spectral region, the complex host centers such as oxygen vacancies are recorded. An increase in the terbium ion concentration does not lead to the effect of concentration quenching. Luminescence decay kinetics analysis for all ceramics samples is performed. The effect of terbium oxide on the optical, PL properties and luminescence decay kinetics of MgAl2O4 ceramics is discussed. | ||
| 461 | |t Physica Status Solidi (B) | ||
| 463 | |t Vol. 257, iss. 8 |v [1900471, 6 p.] |d 2020 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a ceramics | |
| 610 | 1 | |a luminescence properties | |
| 610 | 1 | |a magnesium aluminum spinel | |
| 610 | 1 | |a spark plasma sintering technique | |
| 610 | 1 | |a terbium ions | |
| 610 | 1 | |a керамика | |
| 610 | 1 | |a люминесцентные свойства | |
| 610 | 1 | |a магниево-алюминиевые соединения | |
| 610 | 1 | |a плазменное спекание | |
| 610 | 1 | |a ионы тербия | |
| 701 | 1 | |a Valiev |b D. T. |c specialist in the field of material science |c Associate Professor of Tomsk Polytechnic University, Candidate of Physical and Mathematical Sciences |f 1987- |g Damir Talgatovich |3 (RuTPU)RU\TPU\pers\33772 |9 17370 | |
| 701 | 1 | |a Khasanov |b O. L. |c Russian physicist, materials scientist, Doctor of Engineering |c professor, Director of TPU Nano-Centre and Head of the Department "Nanomaterials and Nanotechnologies" of TPU |f 1958- |g Oleg Leonidovich |3 (RuTPU)RU\TPU\pers\27102 |9 12652 | |
| 701 | 1 | |a Dvilis |b E. S. |c Chemical Engineer |c senior researcher of Tomsk Polytechnic University, Professor, doctor of physical and mathematical Sciences |f 1969- |g Edgar Sergeevich |3 (RuTPU)RU\TPU\pers\34597 |9 17959 | |
| 701 | 1 | |a Stepanov |b S. A. |c specialist in the field of lightning engineering |c Engineer of Tomsk Polytechnic University |f 1986- |g Sergey Aleksandrovich |3 (RuTPU)RU\TPU\pers\33771 |9 17369 | |
| 701 | 1 | |a Paygin |b V. D. |c specialist in the field of material science |c engineer of Tomsk Polytechnic University |f 1992- |g Vladimir Denisovich |3 (RuTPU)RU\TPU\pers\38492 |9 20806 | |
| 701 | 1 | |a Ilela |b A. E. |c specialist in the field of material science |c Assistant of the Department of Tomsk Polytechnic University |f 1982- |g Alfa Edison |3 (RuTPU)RU\TPU\pers\42538 |9 21549 | |
| 801 | 2 | |a RU |b 63413507 |c 20200908 |g RCR | |
| 856 | 4 | |u https://doi.org/10.1002/pssb.201900471 | |
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