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https://open.uns.ac.rs/handle/123456789/15431
Назив: | Complex permeability changes of ferritic LTCC samples with variation of sintering temperatures | Аутори: | Blaž, Nelu Marić, Andrea Atassi I. Radosavljević, Goran Živanov, Ljiljana Homolka H. Smetana W. |
Датум издавања: | 1-апр-2012 | Часопис: | IEEE Transactions on Magnetics | Сажетак: | The complex permeability of commercially available ferrite LTCC (Low Temperature Cofired Ceramics) tapes in dependence of peak sintering temperature have been measured and calculated in the high-frequency range (300 kHz-1.2 GHz). For the first time this dependence is determine at five peak sintering temperatures up to 1300° C. Permeability values have been calculated from S-parameters measured with a vector network analyzer and a short ended coaxial sample holder into which ferritic LTCC toroids have been placed. The toroids were realized by stacking and laminating 62 layers of green tape and then sintered at peak temperatures of 885° C, 1000° C, 1100° C, 1200° C and 1300° C, respectively. Obtained complex permeability values for these toroidal LTCC samples are presented. The maximum real part of permeability values increase up to 930 (at 1100° C firing peak temperature) and show a shift to lower frequency values. At higher sintering temperatures (1200° C and 1300° C) real part of permeability of ferrite samples starts to decrease with further shifting to lower frequency values. In order to determine variation of grain size caused with increasing of sintering temperature and its influence on material complex permeability, an microscopic inspection of samples was performed. Also, using the model of the complex permeability spectra, dispersion parameters of ferrite LTCC material has been determined for various sintering temperatures. © 2006 IEEE. | URI: | https://open.uns.ac.rs/handle/123456789/15431 | ISSN: | 00189464 | DOI: | 10.1109/TMAG.2011.2173178 |
Налази се у колекцијама: | FTN Publikacije/Publications |
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