The Influence of Al^<+++> Substitution for Fe^<+++> in M-Type Ba Ferrite Powder on the Intrinsic Coercivity H_<CJ>
スポンサーリンク
概要
- 論文の詳細を見る
The influence of Al^<+++> Substitution for Fe^<+++> in M-type Ba ferrite on the magnetocrystalline anisotropy field H_A and the critical single-domain radius R_C has been studied by Haneda and Kojima. It is difficult to obtain H_<CJ> values agreeing with theoretical results for the reason that the H_<CJ> is very sensitive to the preparation method. We have been developing a new method called "coprecipitation combined with high-temperature melting." It offers a suitable condition for studying the rule of H_<CJ> of Ba Fe_<12-x>Al_xO_<19>. Our results conformed to the effects calculated by Haneda and Kojima. The highest level of H_<CJ> in our experiment reached 16000 Oe. We have fabricated plastic sheet magnets from the superhigh H_<CJ> ferrite powder and padded the soft ferrite core with this sheet magnet to adjust the bias magnetic field. This ferrite core can be improved and the weight and size of the device can be reduced.
- 社団法人応用物理学会の論文
- 1990-05-20
著者
-
Zhang You-gang
University Of Electronic Science And Technology Of China
-
Mei Xue-ming
University Of Electronic Science And Technology Of China
-
Feng J
Research Institute Of Micro
-
Feng Jie
University Of Electronic Science And Technology Of China
-
Guo Bi-jun
University Of Electronic Science And Technology Of China
-
ZHENG Zong-Yu
University of Electronic Science and Technology of China
-
Zheng Zong-yu
University Of Electronic Science And Technology Of China:(permanent Address)yibin P. O.
関連論文
- Fabrication and Recording Characteristics of Sputter-Deposited Ba-Ferrite Thin Films Deposited on Pt-Ta Underlayers for Perpendicular Magnetic Recording Media(Special Issue on Selected Papers from the 5th Asian Symposium on Information Storage Technology)
- Addition of SiO_2 to Increase Coercivity and Squareness Ratio of Ba Ferrite Films for Perpendicular Magnetic Recording Media(Special Issue on Selected Papers from the 4th Asian Symposium for Information Storage Technology)
- The Influence of Al^ Substitution for Fe^ in M-Type Ba Ferrite Powder on the Intrinsic Coercivity H_
- Compensation for the Demagnetizing Field in Remanence Measurements