{"title":"Development of an EMI shielding ferrite: a case study","authors":"R. G. Chandran, R.M. Cursetji","doi":"10.1109/ICEMIC.1999.871666","DOIUrl":null,"url":null,"abstract":"Ni-Zn EMI shielding spinel ferrite of the composition Ni/sub 0.30/Zn/sub 0.60/M/sub 0.10/Fe/sub 2/O/sub 4/, where M=Cu, have been synthesized by the conventional ceramic route and the properties were tailored for its use in ribbon flat cables of digital equipments in the operating frequency range of 30-200 MHz. These highly dense soft ferrites were obtained by the incorporation of sintering aids such as Cu. The microstructure of the ferrite showed angular grains of size /spl sim/20 /spl mu/m and inter/intragranular porosity. The spinel ferrite was lossy in nature and had a Curie temperature of /spl sim/170/spl deg/C and possessed impedance of 23.3, 59.6 and 121.5 Ohms at 30, 100 and 200 MHz respectively.","PeriodicalId":104361,"journal":{"name":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility","volume":"23 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the International Conference on Electromagnetic Interference and Compatibility","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICEMIC.1999.871666","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Ni-Zn EMI shielding spinel ferrite of the composition Ni/sub 0.30/Zn/sub 0.60/M/sub 0.10/Fe/sub 2/O/sub 4/, where M=Cu, have been synthesized by the conventional ceramic route and the properties were tailored for its use in ribbon flat cables of digital equipments in the operating frequency range of 30-200 MHz. These highly dense soft ferrites were obtained by the incorporation of sintering aids such as Cu. The microstructure of the ferrite showed angular grains of size /spl sim/20 /spl mu/m and inter/intragranular porosity. The spinel ferrite was lossy in nature and had a Curie temperature of /spl sim/170/spl deg/C and possessed impedance of 23.3, 59.6 and 121.5 Ohms at 30, 100 and 200 MHz respectively.
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