Title :
Magnetic field fluctuations due to movement of objects composed of magnetic materials
Author :
Yamazaki, Kinya ; Ashio, K. ; Fujiwara, Koji ; Takahashi, Naoyuki
Author_Institution :
Takenaka Corp., Chiba, Japan
Abstract :
Summary form only given. In order to grasp the area at which biomagnetic measurements (BMM, >10/sup -12/ T) and ion beam plots (IBP, >10/sup -7/ T) for semiconductors are affected, a method of predicting the amplitude of fluctuations of magnetic fields (IMF) at low frequencies is investigated. Such IMF occurrs due to the movement of objects composed of magnetic materials such as doors and elevators in buildings. In the proposed method, the 3-D finite element method is applied to the calculation of magnetization M in the object, and then Biot-Savart´s law is used to evaluate the flux density B far from the objects.
Keywords :
finite element analysis; magnetic field measurement; magnetisation; 3-D finite element method; Biot-Savart´s law; flux density; magnetic field fluctuations; magnetic materials; magnetization; movement of objects; Area measurement; Biomagnetics; Elevators; Finite element methods; Fluctuations; Frequency measurement; Ion beams; Magnetic field measurement; Magnetic fields; Magnetic materials;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1001091
