Low-Loss Co2-Y Ferrites with Added CuO Sintered in Air for High Frequency Application - Materials Sciences and Applications

MSA > Vol.5 No.13, November 2014

Low-Loss Co₂-Y Ferrites with Added CuO Sintered in Air for High Frequency Application ()

HTML XML

Download as PDF (Size: 3075KB) PP. 984-989

DOI: 10.4236/msa.2014.513099 2,424 Downloads 3,246 Views Citations

Author(s)

Shigeo Fujii, Koji Wakamatsu, Hiroshi Satoh, Setsuo Yamamoto

Affiliation(s)

Department of Material Science and Engineering, University of Yamaguchi, Ube, Japan.

ABSTRACT

The sintering characteristics of hexagonal Co₂-Y-type ferrite, Ba₂Co₂Fe₁₂O₂₂, with the addition of 0.6 wt% CuO, were studied in order to allow for preparation in air, as opposed to the conventionally recommended O₂, for industrial production. The dependence of the resistivity, ρ magnetic loss, tanδ, and the permeability, μ, at 1 GHz on the sintering temperature was investigated. A low tanδ of 0.05 with a m of 2.7 at a frequency of 1 GHz, along with a high ρ (up to 7 × 10⁴ μm), were attained under sintering at 1170 °C in air, which were the same features as those of samples sintered at 1200°C in O₂. The dependence of tanδ on grain diameter was also examined, and it was determined that a small grain size (less than 2 μm) is preferable for low tanδ.

KEYWORDS

Ferrite, Hexagonal, Y-Type, Sintering, Low Loss

Share and Cite:

Fujii, S. , Wakamatsu, K. , Satoh, H. and Yamamoto, S. (2014) Low-Loss Co₂-Y Ferrites with Added CuO Sintered in Air for High Frequency Application. Materials Sciences and Applications, 5, 984-989. doi: 10.4236/msa.2014.513099.

Journals Menu

Follow SCIRP

	+1 323-425-8868
	customer@scirp.org
	+86 18163351462(WhatsApp)
	1655362766

	Paper Publishing WeChat

Journals Menu

Home

About SCIRP

Service

Policies