HTS-SQUIDを用いたサンプル回転方式小型磁化率計の高感度化

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2014/05/01

タイトル(英語): Improvement of Sensitivity for a Compact Magnetometer using HTS-SQUID with Rotating Sample

著者名: 濱崎　大地（岡山大学大学院 自然科学研究科），岡本　直大（岡山大学大学院 自然科学研究科），Mohd Mawardi Saari（岡山大学大学院 自然科学研究科），堺　健司（岡山大学大学院 自然科学研究科），紀和　利彦（岡山大学大学院 自然科学研究科），塚田　啓二（岡山大学大学院 自然科学研究科）

著者名(英語): Daichi Hamasaki (Graduate School of Natural Science and Technology, Okayama University), Naohiro Okamoto (Graduate School of Natural Science and Technology, Okayama University), Mohd Mawardi Saari (Graduate School of Natural Science and Technology, Okayama University), Kenji Sakai (Graduate School of Natural Science and Technology, Okayama University), Toshihiko Kiwa (Graduate School of Natural Science and Technology, Okayama University), Keiji Tsukada (Graduate School of Natural Science and Technology, Okayama University)

キーワード: HTS-SQUID，サンプル回転方式，磁化率計，反磁性　　HTS-SQUID，rotating sample，magnetometer，diamagnetism

要約(英語): We have improved previously developed compact magnetometer using HTS-SQUID with rotating sample. In the previous system, the attenuation of rotating speed had resulted to the deformation of the averaged waveform signal, reducing the reproducibility in measurements. In this paper, we have used a more superior motor in order to decrease the attenuation of the rotational speed for the precise averaging of the output signal and improving the signal-to-noise ratio. Moreover, to improve sensitivity, we optimized the pickup coil and compared the signal-to-noise ratio of the circular and elliptical pickup coils which having the same number of turns, resistance and inductance. As a result, the signal-to-noise ratio was improved with high accuracy and the magnetometer showed susceptibility sensitivity of 3.8×10-9 emu.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.134 No.5 （2014）

本誌掲載ページ: 347-351 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/134/5/134_347/_article/-char/ja/