title: Note: A hand-held high-Tc superconducting quantum interference device operating without shielding.
abstract: By improving the compensation circuit, a hand-held high-Tc rf superconducting quantum interference devices (SQUID) system was developed. It could operate well when moving in unshielded environment. To check the operation, it was used to do eddy-current testing by hand moving the SQUID, and the artificial defect under 6 mm aluminum plate could be successfully detected in shielded environment.
authors.affiliation: Superconducting Materials Center, National Institute for Materials Science, Tsukuba, Ibaraki, Japan. he.dongfeng@nims.go.jp
authors.forename: D F
authors.initials: DF
authors.lastname: He