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J. Korean Ceram. Soc. > Volume 28(8); 1991 > Article
Journal of the Korean Ceramic Society 1991;28(8): 640.
30 MHz~1000 MHz 고주파 대역에서 Ni-Zn 계 페라이트의 소결조건에 따른 전파흡수 특성
김경용, 김왕섭, 주윤돈
한국과학기술원 세라믹스연구단
Effects of Sintering Schedule of Ni-Zn Ferrites on Properties of Electromagnetic Wave Absorber between 30 MHz and 1000 MHz
Recently intensive studies have been focussed on ferrites which have high magnetic loss because of the increasing need for the prevention of EMI (Electromagnetic Interference). We investigated effects of microstructures of Ni-Zn ferrites on magnetic losses, magnetic properties, and behaviors of electromagnetic wave absorbers. The characteristics of the absorber were influenced by the sintering conditions. A Ni-Zn ferrite with the thickness of 7$^{circ}C$/min and the cooling rate of 7$^{circ}C$/min. It satisfied the absorbing properties in the wide frequency ranges including VHF (90∼220 MHz), UHF (470∼770 MHz)
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