DocumentCode
1077449
Title
Effect of oxygen impurity on magnetostriction of directionally solidified Tb0.3Dy0.7Fe1.8
Author
Kim, Do Hyung ; Kwon, Oh Yeoul ; Kim, Jong Chul ; Lee, Zin Hyoung
Author_Institution
Dept. of Mater. Sci. & Eng., Korea Adv. Inst. of Sci. & Technol., South Korea
Volume
40
Issue
4
fYear
2004
fDate
7/1/2004 12:00:00 AM
Firstpage
2781
Lastpage
2783
Abstract
A giant magnetostrictive alloy, Terfenol-D, is known to have high magnetostriction and low anisotropy energy. However, oxygen contamination deteriorates the magnetic and magnetoelastic properties of giant magnetostrictive material. Oxygen impurity can originate from the raw materials and from the environment during the manufacturing process. Therefore the effect of oxygen on the magnetostrictive properties and the microstructure of the Tb0.3Dy0.7Fe1.8 alloy were quantitatively investigated. The results demonstrated that as oxygen content increased, magnetostrictive strain and magnetostrictive coefficient decreased. These effects were discussed from the standpoint of microstructure.
Keywords
directional solidification; dysprosium alloys; magnetic impurities; magnetostriction; oxygen; terbium alloys; Tb0.3Dy0.7Fe1.8; Terfenol-D; anisotropy energy; directional solidification; magnetic properties; magnetoelastic properties; magnetostriction; magnetostrictive alloy; magnetostrictive coefficient; magnetostrictive strain; manufacturing process; microstructure; oxygen contamination; oxygen impurity; Anisotropic magnetoresistance; Contamination; Impurities; Magnetic anisotropy; Magnetic materials; Magnetic properties; Magnetostriction; Microstructure; Oxygen; Perpendicular magnetic anisotropy; Directional solidification; Terfenol-D; giant magnetostriction; impurity;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2004.832136
Filename
1325640
Link To Document