Chemical homogeneity, microstructure and magnetic properties of LiTiZn ferrite ceramics doped with Al2O3 or ZrO2; Journal of Alloys and Compounds; Vol. 911

Chemical homogeneity, microstructure and magnetic properties of LiTiZn ferrite ceramics doped with Al2O3 or ZrO2; Journal of Alloys and Compounds; Vol. 911

Бібліографічні деталі
Parent link:	Journal of Alloys and Compounds Vol. 911.— 2022.— [165005, 7 p.]
Автор:	Malyshev A. V. Andrei Vladimirovich
Співавтор:	Национальный исследовательский Томский политехнический университет Инженерная школа неразрушающего контроля и безопасности Отделение контроля и диагностики
Інші автори:	Surzhikov A. P. Anatoly Petrovich, Stary O. Oldrich
Резюме:	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
Мова:	Англійська
Опубліковано:	2022
Предмети:	электронный ресурс труды учёных ТПУ LiTiZn ferrite ceramics doping chemical homogeneity microstructure initial permeability ферритовая керамика химическая однородность микроструктура проницаемость
Онлайн доступ:	https://doi.org/10.1016/j.jallcom.2022.165005
Формат:	Електронний ресурс Частина з книги
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=667881

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