Rare earth-iron magnetostrictive materials and devices using these materials

Patent · Tue Dec 29 00:00:00 EST 1981

OSTI ID:864086

Savage, Howard T ^[1]; Clark, Arthur E ^[2]; McMasters, O Dale ^[3]

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1. Greenbelt, MD
2. Adelphi, MD
3. Ames, IA

Grain-oriented polycrystalline or single crystal magnetostrictive materials n the general formula Tb.sub.x Dy.sub.1-x Fe.sub.2-w, Tb.sub.x Ho.sub.1-x Fe.sub.2-w, Sm.sub.x Dy.sub.1-x Fe.sub.x-w, Sm.sub.x Ho.sub.1-x Fe.sub.2-w, Tb.sub.x Ho.sub.y Dy.sub.z Fe.sub.2-w, or Sm.sub.x Ho.sub.y Dy.sub.z Fe.sub.2-w, wherein O.ltoreq.w.ltoreq.0.20, and x+y+z=1. X, y, and z are selected to maximize the magnetostrictive effect and the magnetomechanical coupling coefficient K.sub.33. These material may be used in magnetostrictive transducers, delay lines, variable frequency resonators, and filters.

• Research Organization: Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)
• DOE Contract Number: W-7405-ENG-82
• Assignee: United States of America as represented by Secretary of Navy (Washington, DC)
• Patent Number(s): US 4308474
• Application Number: 06/094,250
• OSTI ID: 864086
• Country of Publication: United States
• Language: English

Related Subjects

rare
earth-iron
magnetostrictive
materials
devices
grain-oriented
polycrystalline
single
crystal
formula
tb
1-x
2-w
x-w
z
ltoreq
20
selected
maximize
effect
magnetomechanical
coupling
coefficient
33
material
transducers
delay
lines
variable
frequency
resonators
filters
rare earth-iron
variable frequency
rare earth
single crystal
mechanical coupling
coupling coefficient
delay line
magnetostrictive materials
magnetostrictive material
delay lines
magnetostrictive transducers
frequency resonator
magnetostrictive transducer
/310/148/