Enhanced differential magnetostrictive response in annealed Terfenol-D

Journal Article · Mon Aug 09 04:00:00 EDT 1993 · Applied Physics Letters; (United States)

DOI:https://doi.org/10.1063/1.110776· OSTI ID:6136192

Galloway, N; Schulze, M P; Greenough, R D ^[1]; Jiles, D C ^[2]

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1. Department of Applied Physics, University of Hull, Hull HU6 7RX (United Kingdom)
2. Ames Laboratory, Iowa State University, Ames, Iowa 50011 (United States)

The field and pressure dependencies of the magnetostriction of Tb[sub 0.316]Dy[sub 0.684]Fe[sub 1.982] have been measured in a grain-oriented rod after thermally annealing for 1 day at 850 [degree]C and for 4 days at 950 [degree]C in an argon atmosphere. The results of the heat treatment are a fivefold increase in the strain coefficient [ital d][sub 33](=[ital d][lambda]/[ital dH]) and a 100% increase in the maximum strain ([lambda]). There was also an increase in the [lambda]-vs-[ital H] hysteresis. Under compressive uniaxial stress there was virtually no bulk change in magnetostrictive strain until the field exceeded a critical value which depended on the applied stress, for instance [similar to]12 kA/m under a stress of 6 MPa.

• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6136192
• Journal Information: Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 63:6; ISSN 0003-6951; ISSN APPLAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360104* -- Metals & Alloys-- Physical Properties
ALLOY SYSTEMS
ALLOYS
ANNEALING
DYSPROSIUM ALLOYS
HEAT TREATMENTS
HYSTERESIS
IRON ALLOYS
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETOSTRICTION
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
RARE EARTH ALLOYS
TERBIUM ALLOYS
TERNARY ALLOY SYSTEMS