公开(公告)号：US11275128B2

公开(公告)日：2022-03-15

申请号：US16614884

申请日：2018-03-30

申请人： NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY

发明人： Keiji Tsukada

IPC分类号： G01R33/035 ,  G01R33/00 ,  G01R33/06 ,  G01R33/07 ,  G01R33/09

摘要： Provided is a magnetic field measuring device which has good temperature stability and which enables an improvement by making it possible for the sensitivity of a Hall element, a magnetic impedance (MI) element or a magnetic resistance (MR) element, which are conventionally used extensively, to be set freely. This magnetic field measuring device comprises: a temperature maintaining means for maintaining an extremely low temperature state in which a superconductor adopts a superconducting state; a magnetic sensor which is provided inside the temperature maintaining means to detect a magnetic field; and a magnetic field space forming means for forming a magnetic field space specific to the superconducting state, by adopting a superconducting state inside the temperature maintaining means; wherein the magnetic sensor is disposed in the magnetic field space.