Magnetic Characteristics of Architectural Materials for Non-magnetic Buildings
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概要
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The demand for buildings constructed from non-magnetic materials has greatly increased, for facilities in which precise measurements, such as nuclear magnetic resonance (NMR) spectroscopy or investigations into the biological effects of magnetism, are carried out. In this paper, the magnetic characteristics of architectural materials for non-magnetic buildings are investigated. We found that non-magnetic bars, cement, and sand have lower magnetization than the SUS304 plate commonly, which is used as the reference for a low-magnetic material in architecture, but ferromagnetic carbon steel bars show very high magnetization. The magnetization of a plastically deformed portion of SUS304 is about twenty times higher than that of an undeformed one. We also discuss demagnetization by heat treatment for deformed samples, especially the characteristics of the magnetization's dependence on temperature for heat-treated SUS304. The elimination of plastically deformed portions of architectural materials and suitable heat treatment for deformed materials is of great importance in the realization of non-magnetic buildings.
- 社団法人日本磁気学会の論文
- 2006-09-01
著者
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Kobayashi K.
Faculty of Engineering, Iwate University
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Yamazaki K.
Research Information Center, Institute of Plasma Physics, Nagoya University
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KATO K.
Research Institute for Electronic Science, Hokkaido University
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Chiba A.
Faculty Of Engineering Iwate Univ.
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