Microstructure and electromagnetic properties of LiFe5O8 ferrite ceramics prepared from wet- and dry-milled powders

Microstructure and electromagnetic properties of LiFe5O8 ferrite ceramics prepared from wet- and dry-milled powders

Détails bibliographiques
Parent link:Ceramics International
Vol. 47, iss. 17.— 2021.— [P. 23935-23941]
Collectivité auteur: Национальный исследовательский Томский политехнический университет Институт неразрушающего контроля Проблемная научно-исследовательская лаборатория электроники, диэлектриков и полупроводников
Autres auteurs: Lysenko E. N. Elena Nikolaevna, Vlasov V. A. Vitaliy Anatolievich, Malyshev A. V. Andrei Vladimirovich, Sheveleva E. A. Elena Aleksandrovna, Surzhikov A. P. Anatoly Petrovich
Résumé:Title screen
The effect of dry and wet ball milling of LiFe5O8 ferrite powder on the microstructure and electromagnetic properties of ferrite ceramics was studied using XRD analysis, scanning electron microscopy, dilatometry, thermogravimetry, calorimetry, and measurement of specific magnetization and electrical resistance. The sintering temperature was 1050 °C; the sintering time was 2 h. It was found that ferrite fabricated from dry-milled powder exhibits an ordered [alpha]-LiFe5O8 phase with bulk density of 91%. Its saturation magnetization and Curie temperature are 55 emu/g and 628°С, respectively. Specific electrical resistance is 4•106 [omega] cm. Wet milling in isopropyl alcohol causes formation of a disordered [beta]-LiFe5O8 phase. Ceramics produced by this method shows higher bulk density (97%) and low porosity, and an order of magnitude lower resistivity. Its saturation magnetization and Curie temperature are 51 emu/g and 607°С, respectively.
Режим доступа: по договору с организацией-держателем ресурса
Publié: 2021
Sujets:
электронный ресурс
труды учёных ТПУ
sintering
electrical properties
magnetic properties
ferrites
спекание
электрические свойства
магнитные свойства
ферриты
Accès en ligne:https://doi.org/10.1016/j.ceramint.2021.05.102
Format: Électronique Chapitre de livre
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666223
Description
Résumé:Title screen
The effect of dry and wet ball milling of LiFe5O8 ferrite powder on the microstructure and electromagnetic properties of ferrite ceramics was studied using XRD analysis, scanning electron microscopy, dilatometry, thermogravimetry, calorimetry, and measurement of specific magnetization and electrical resistance. The sintering temperature was 1050 °C; the sintering time was 2 h. It was found that ferrite fabricated from dry-milled powder exhibits an ordered [alpha]-LiFe5O8 phase with bulk density of 91%. Its saturation magnetization and Curie temperature are 55 emu/g and 628°С, respectively. Specific electrical resistance is 4•106 [omega] cm. Wet milling in isopropyl alcohol causes formation of a disordered [beta]-LiFe5O8 phase. Ceramics produced by this method shows higher bulk density (97%) and low porosity, and an order of magnitude lower resistivity. Its saturation magnetization and Curie temperature are 51 emu/g and 607°С, respectively.
Режим доступа: по договору с организацией-держателем ресурса
DOI:10.1016/j.ceramint.2021.05.102

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