Terfenol-D, a terbium–dysprosium–iron alloy (Tb0.3Dy0.7Fe2) developed at the U.S. Naval Ordnance Laboratory in the 1970s, shows saturation magnetostriction of about 2,000 ppm at room temperature — the largest of any conventional magnetostrictive material. It is used in sonar transducers and actuators.
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Terfenol-D, a terbium–dysprosium–iron alloy (Tb0.3Dy0.7Fe2) developed at the U.S. Naval Ordnance Laboratory in the 1970s, shows saturation magnetostriction of about 2,000 ppm at room temperature — the largest of any conventional magnetostrictive material. It is used in sonar transducers and actuators.
The largest strain produced by an applied magnetic field in a material at room temperature (excluding magnetic shape-memory alloys).
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Limits Registry. LR-LARGEST-ROOM-TEMPERATURE-MAGNETOSTRICTION. Largest room-temperature magnetostriction. 2026.