Effects of Li2CO3 addition on the microstructure and magnetic properties of low-temperature-fired NiCuZn ferrites |
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| Affiliation: | 1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;2. Institute of Electronic and Information Engineering, University of Electronic Science and Technology of China, Dongguan 518105, China;1. University of Applied Sciences Jena, Dept. of SciTec, Carl-Zeiss-Promenade 2, 07745 Jena, Germany;2. Federal Institute of Materials Research and Testing (BAM), Unter den Eichen 87, 12205 Berlin, Germany;1. School of Science, China University of Geosciences, Beijing, 100083, PR China;2. School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, PR China;1. Université de Carthage, Faculté des Sciences de Bizerte, UR11ES30, Synthèse et Structures de Nanomatériaux, 7021 Jarzouna, Tunisia;2. Université de Carthage, Faculté des Sciences de Bizerte, Laboratoire de Physique des Matériaux, 7021 Jarzouna, Tunisia;3. Université de Toulouse, LPCNO, INSA CNRS UMR 5215, 135 av. de Rangueil, 31077 Toulouse Cedex 4, France;4. Université Tunis El Manar, Faculté des Sciences de Tunis, Campus Universitaire, 2092, Tunisia;5. Northern Border University, Faculty of Science, Arar, Saudi Arabia |
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| Abstract: | NiCuZn ferrites doped with 0.5 wt% Bi2O3 and different Li2CO3 contents (0–0.25 wt%) were sintered at 900 °C. The microstructure and magnetic properties of these materials were investigated. The addition of low-melting-point Li2CO3 led to large and uniform grains. However, excess Li2CO3 addition produced abnormal grains and many closed pores, thereby reducing density. Permeability initially increased and then decreased at the Li2CO3 content of >0.2 wt%. Maximum magnetic flux density (431.1 mT at room temperature, 339.6 mT at 100 °C) and minimum power loss were achieved at 0.2 wt% Li2CO3. These findings suggested the suitability of 0.2 wt% Li2CO3 for applications in low-temperature co-fired ceramic magnetic power components and modules. |
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| Keywords: | LTCC Ferrite Magnetic flux density Power loss |
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