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Terfenol-DTerfenol-D is an alloy of the formula Tb(0.3) Dy(0.7) Fe(1.9), developed in the 1950's at the Naval Ordnance Laboratory in America. It is named after terbium, iron (Fe), Naval Ordnance Laboratory (NOL), and the D comes from dysprosium. Product highlightThe alloy has the highest magnetostriction of any alloy, up to 0.001 m/m at saturation; it expands and contracts in magnetic field. It sees application in magnetomechanical sensors, actuators, and acoustic and ultrasonic transducers, eg. in the SoundBug device (its first commercial application), or in naval sonar systems.[1] References
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| This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Terfenol-D". A list of authors is available in Wikipedia. |
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