Terfenol-D

Terfenol-D, an alloy of the formula TbxDy1−xFe2 (x ≈ 0.3), is a magnetostrictive material. It was initially developed in the 1970s by the Naval Ordnance Laboratory in the United States. The technology for manufacturing the material efficiently was developed in the 1980s at Ames Laboratory under a U.S. Navy-funded program.[1] It is named after terbium, iron (Fe), Naval Ordnance Laboratory (NOL), and the D comes from dysprosium.

  1. ^ Wheeler, Scott L. (2002-10-29). "PRC Espionage leads to 'Terf' war: investigators say China placed students in American universities to gain secret information about an exotic material with valuable industrial and military uses | Insight on the News Newspaper | Find Articles at BNET". Findarticles.com. Archived from the original on 2012-07-16. Retrieved 2010-04-08.