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Dotierte Hexaferrite zur EMI-Unterdrückung, hergestellt mit Weinsäure

Dotierte Hexaferrite zur EMI-Unterdrückung, hergestellt mit Weinsäure


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About the Book

Strontiumhexaferrite, dotiert mit unterschiedlichem Co-Zr-Gehalt (x), werden durch Sol-Gel-Autoverbrennung unter Verwendung von Weinsäure als Brennstoff synthetisiert. Die Auswirkung der Kalzinierungstemperatur (500-1000°C) auf die Struktur, die Morphologie und die magnetischen Eigenschaften wurde ebenfalls für x=0,2 untersucht, wobei sich 800°C als die am besten geeignete Temperatur mit den besten magnetischen Eigenschaften herausgestellt hat. Die Dotierung führt zu einem Anstieg von MS und Mr bis zu x=0,4, während HC bis zu einem Dotierungsgrad von 1,0 kontinuierlich abnimmt. Es wird eine durchschnittliche Kristallgröße von 36,47 nm beobachtet. Die elektromagnetische Charakterisierung der hergestellten Ferrite zeigt einen Anstieg der Imaginärteile von Permittivität und Permeabilität im Ku-Band mit der Dotierung. Ferrite mit x = 0,2, 0,8 und 1,0 haben einen angemessenen Reflexionsverlust (weniger als -10 dB) und eine Bandbreite (2,35 GHz, 1,46 GHz bzw. 2,9 GHz) im Ku-Band und können daher als wirksame Absorber zur Unterdrückung elektromagnetischer Störungen für Verteidigungs- und Kommunikationszwecke eingesetzt werden. Sowohl die Bedingung der Impedanzanpassung als auch die verlustbehaftete Natur von Ferriten spielen eine wichtige Rolle bei der Bestimmung der Absorptionseigenschaften von Hexaferriten.


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Product Details
  • ISBN-13: 9786205370124
  • Publisher: KS Omniscriptum Publishing
  • Publisher Imprint: Verlag Unser Wissen
  • Height: 229 mm
  • No of Pages: 52
  • Spine Width: 3 mm
  • Width: 152 mm
  • ISBN-10: 6205370123
  • Publisher Date: 21 Nov 2022
  • Binding: Paperback
  • Language: German
  • Returnable: N
  • Weight: 141 gr


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Dotierte Hexaferrite zur EMI-Unterdrückung, hergestellt mit Weinsäure
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