@article{oai:soar-ir.repo.nii.ac.jp:00020502,
 author = {曽根原, 誠 and 宮嶋, 優希 and 佐藤, 敏郎},
 issue = {1},
 journal = {日本磁気学会論文特集号},
 month = {},
 note = {The carbonyl-iron powder (CIP) was annealed in the air for the composite core of high Q-factor RF-inductor to see if an oxidized film would be formed on CIP surface. Results showed that not only the surface-oxidized film thickness but also the crystallite diameter and coecivity increased when increasing the annealing temperature and time. The most suitable annealing conditions were found to be 240oC and 6 h: about 40 nm of Fe3O4 and Fe2O3 were formed on the CIP surface under these conditions. A magnetic composite with the surface-oxidized film on magnetic particles was fabricated and its permeability measured. The inductance and resistance were calculated by a 3D full-model electromagnetic analyzer on the basis of measured permeability and the Q-factor was then estimated using these characteristics. The highest Q-factor, 33, was observed at 1.8 GHz, which was higher than that of the air-core from 0.1 to 1.8 GHz., Article, 日本磁気学会論文特集号.1(1):34(2017)},
 pages = {34--39},
 title = {高Q-RFインダクタ用表面酸化膜付CIP/Epoxy複合材料磁心の基礎検討},
 volume = {1},
 year = {2017}
}