Magnetomechanical properties of single crystal Terfenol-D

Journal Article · Wed Sep 01 04:00:00 EDT 1999 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers)

DOI:https://doi.org/10.1109/20.800677· OSTI ID:20000820

Busbridge, S C; Meng, L Q; Wu, G H; Wang, B W; Li, Y X; Gao, S X; Cai, C; Zhan, W S

Quasi-static and dynamic magnetomechanical measurements have been made on a twin-free <111> oriented single crystal of Tb{sub 0.27}Dy{sub 0.73}Fe{sub 2} (Terfenol-D). Unusually large values of dynamic strain coefficient, d{sub 33}, and magnetomechanical coupling coefficient, k{sub 33}, of 19.1 nm A{sup {minus}1} and 0.83 respectively were recorded with an oscillating field of amplitude 500 A m{sup {minus}1}rms at room temperature. The static magnetostriction saturated at 1688 x 10{sup {minus}6}, however, 90% of this strain was achieved with a field of 45 kA m{sup {minus}1}. The strain versus magnetization curves exhibit unusually linear regions, allowing confirmation that 71{degree} domain wall motion is primarily responsible for the high coupling coefficient of this material.

• Research Organization: Univ. of Brighton, Moulsecoomb (GB)
• OSTI ID: 20000820
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers) Journal Issue: 5Pt2 Vol. 35; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DYSPROSIUM ALLOYS
IRON BASE ALLOYS
MAGNETOSTRICTION
MECHANICAL PROPERTIES
MONOCRYSTALS
STRAINS
TERBIUM ALLOYS