高温超伝導体を用いる磁気シールド

概要

論文の詳細を見る
Magnetic shielding vessels are used to reduce the influence of environmental magnetic fields, and to protect the environment from the leakage of any generated magnetic field. There has been an increased need for systems of magnetic shields capable of limiting regions to very low magnetic field exposure such as those associated with biomagnetic measurement. The high-critical-temperature superconductor (HTS) is an ideal material for use as a magnetic shielding vessel. In order to simplify the theoretical analysis, the evaluation of the magnetic shielding effects is limited to an HTS cylinder, such as a Bi-Pb-Sr-Ca-Cu-O (BPSCCO), in a homogeneous dc magnetic field. The present paper examines several characteristics within a superconducting BPSCCO cylinder for evaluating its shielding effects. It also examines the improvement of the magnetic shielding effect of a BPSCCO cylinder.
社団法人日本磁気学会の論文
2001-10-01