Chemical homogeneity, microstructure and magnetic properties of LiTiZn ferrite ceramics doped with Al2O3 or ZrO2; Journal of Alloys and Compounds; Vol. 911
| Parent link: | Journal of Alloys and Compounds Vol. 911.— 2022.— [165005, 7 p.] |
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| Zusammenfassung: | Title screen Sintering of ferrite materials requires sensitive control of homogeneity that affects electromagnetic properties. The paper proposes a method for analysis of chemical homogeneity of ferrite ceramics based on mathematical analysis of differential temperature dependences of the initial permeability near the Curie point. The method was tested on model samples of LiTiZn ferrite ceramics doped with Al2O3 or ZrO2 of 0.10, 0.25, 0.5 0.75, and 1 wt%. It was found the effect of doping agents on the ferrite lattice parameter is insignificant, and they are not indicated on the diffraction patterns as separate peaks. SEM data show a weak effect of Al2O3 doping agent on the average grain size of ferrite ceramics. At the same time, the effect is more pronounced for ZrO2 due to secondary recrystallization. In this case, the coercive force shows a particular increase as compared with undoped samples: by 23% and 60% for Al2O3 and ZrO2 respectively of doping agents’ concentration increased to 1 wt%. The paramagnetic-to-ferrimagnetic transition of ferrites near the Curie point is highly sensitive to chemical homogeneity of the material. It was shown that the width of the differential temperature dependence peak of the initial permeability can be used to assess chemical homogeneity of ferrimagnetic ceramics. The peak width was found to increase by 75%. Therefore, the proposed method revealed a higher sensitivity compared to XRD and hysteresis loops. Режим доступа: по договору с организацией-держателем ресурса |
| Sprache: | Englisch |
| Veröffentlicht: |
2022
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| Schlagworte: | |
| Online-Zugang: | https://doi.org/10.1016/j.jallcom.2022.165005 |
| Format: | Elektronisch Buchkapitel |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=667881 |
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| 200 | 1 | |a Chemical homogeneity, microstructure and magnetic properties of LiTiZn ferrite ceramics doped with Al2O3 or ZrO2 |f A. V. Malyshev, A. P. Surzhikov, O. Stary | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 29 tit.] | ||
| 330 | |a Sintering of ferrite materials requires sensitive control of homogeneity that affects electromagnetic properties. The paper proposes a method for analysis of chemical homogeneity of ferrite ceramics based on mathematical analysis of differential temperature dependences of the initial permeability near the Curie point. The method was tested on model samples of LiTiZn ferrite ceramics doped with Al2O3 or ZrO2 of 0.10, 0.25, 0.5 0.75, and 1 wt%. It was found the effect of doping agents on the ferrite lattice parameter is insignificant, and they are not indicated on the diffraction patterns as separate peaks. SEM data show a weak effect of Al2O3 doping agent on the average grain size of ferrite ceramics. At the same time, the effect is more pronounced for ZrO2 due to secondary recrystallization. In this case, the coercive force shows a particular increase as compared with undoped samples: by 23% and 60% for Al2O3 and ZrO2 respectively of doping agents’ concentration increased to 1 wt%. The paramagnetic-to-ferrimagnetic transition of ferrites near the Curie point is highly sensitive to chemical homogeneity of the material. It was shown that the width of the differential temperature dependence peak of the initial permeability can be used to assess chemical homogeneity of ferrimagnetic ceramics. The peak width was found to increase by 75%. Therefore, the proposed method revealed a higher sensitivity compared to XRD and hysteresis loops. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Journal of Alloys and Compounds | ||
| 463 | |t Vol. 911 |v [165005, 7 p.] |d 2022 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a LiTiZn ferrite ceramics | |
| 610 | 1 | |a doping | |
| 610 | 1 | |a chemical homogeneity | |
| 610 | 1 | |a microstructure | |
| 610 | 1 | |a initial permeability | |
| 610 | 1 | |a ферритовая керамика | |
| 610 | 1 | |a химическая однородность | |
| 610 | 1 | |a микроструктура | |
| 610 | 1 | |a проницаемость | |
| 700 | 1 | |a Malyshev |b A. V. |c Specialist in the field of electrical engineering |c Senior researcher at Tomsk Polytechnic University, Candidate of Physics and Mathematics (PhD Phys.-Math.) |f 1978- |g Andrei Vladimirovich |3 (RuTPU)RU\TPU\pers\30965 |9 15203 | |
| 701 | 1 | |a Surzhikov |b A. P. |c physicist |c Professor of Tomsk Polytechnic University, doctor of physical and mathematical sciences (DSc) |f 1951- |g Anatoly Petrovich |3 (RuTPU)RU\TPU\pers\30237 |9 14617 | |
| 701 | 1 | |a Stary |b O. |c Specialist in the field of non-destructive testing |c Senior researcher of Tomsk Polytechnic University, Candidate of economic sciences |f 1960- |g Oldrich |3 (RuTPU)RU\TPU\pers\45340 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа неразрушающего контроля и безопасности |b Отделение контроля и диагностики |3 (RuTPU)RU\TPU\col\23584 |
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