Multilayer ferrite inductors for the use at high temperatures
| Autor: | Sebastian Thiele, Heike Bartsch, Jens Mueller, Jörg Töpfer, Beate Capraro, Dirk Schabbel, Timmy Reimann, Steffen Grund |
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| Přispěvatelé: | Publica |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
02 engineering and technology Dielectric Inductor 01 natural sciences low temperature cofired ceramics 0103 physical sciences Ceramic Electrical and Electronic Engineering Composite material high-temperature components 010302 applied physics nickel copper zinc ferrite multilayer coils 021001 nanoscience & nanotechnology Condensed Matter Physics Atomic and Molecular Physics and Optics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Inductance Zinc ferrite visual_art Electronic component visual_art.visual_art_medium Ferrite (magnet) 0210 nano-technology Relative permeability ferrite materials |
| Zdroj: | Microelectronics International. 37:73-78 |
| ISSN: | 1356-5362 |
| DOI: | 10.1108/mi-11-2019-0072 |
| Popis: | Purpose This paper aims to investigate the usability of the nickel copper zinc ferrite with the composition Ni0.4Cu0.2Zn0.4Fe1.98O3.99 for the realization of high-temperature multilayer coils as discrete components and integrated, buried function units in low temperature cofired ceramics (LTCC). Design/methodology/approach LTCC tapes were cast and test components were produced as multilayer coils and as embedded coils in a dielectric tape. Different metallization pastes are compared. The properties of the components were measured at room temperature and higher temperature up to 250°C. The results are compared with simulation data. Findings The silver palladium paste revealed the highest inductance values within the study. The measured characteristics over a frequency range from 1 MHz to 100 MHz agree qualitatively with the measurements obtained from toroidal test samples. The inductance increases with increasing temperature and this influence is lower than 10%. The characteristic of embedded coils is comparable with this of multilayer components. The effective permeability of the ferrite material reaches values around 130. Research limitations/implications The research results based on a limited number of experiments; therefore, the results should be verified considering higher sample sizes. Practical implications The results encourage the further investigation of the material Ni0.4Cu0.2Zn0.4Fe1.98O3.99 for the use as high-temperature ferrite for the design of multilayer coils with an operation frequency in the range of 5-10 MHz and operation temperatures up to 250°C. Originality/value It is demonstrated for the first time, that the material Ni0.4Cu0.2Zn0.4Fe1.98O3.99 is suitable for the realization of high-temperature multilayer coils and embedded coils in LTCC circuit carriers with high performance. |
| Databáze: | OpenAIRE |
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