Magnetostriction of laves phase rare earth - Ni/sub 2/ compounds
Technical Report
·
OSTI ID:5188266
The magnetostriction of the RNi/sub 2/ compounds (R = Tb, Dy, Ho, Er and Tm) was measured as a function of applied field from T = 5/sup 0/K to above the Curie temperatures. A direct comparison is made between these results and the huge magnetostriction observed at cryogenic temperatures in the RFe/sub 2/ and RCo/sub 2/ compounds. The largest magnetostriction in the RNi/sub 2/ series occurs in the TbNi/sub 2/. At T = 5/sup 0/K the magnetostriction is fairly well saturated and results in a value of lambda/sub parallel to/-lambda/sub perpendicular to/lambda = 2270 x 10/sup -6/ at H = 25kOe, while extrapolation to infinite field yields 2340 x 10/sup -6/. DyNi/sub 2/ also displays a tendency to saturate at the higher fields at lower temperatures with lambda/sub parallel to/-lambda/sub perpendicular to/ = -765 x 10/sup -6/ at 25 kOe and - 840 ppM at H = infinity. The compounds HoNi/sub 2/, ErNi/sub 2/ and TmNi/sub 2/ all exhibit large strains at T = 5/sup 0/K although fail to saturate with available fields. At 25kOe the magnetostriction for these compounds was found to be -386 x 10/sup -6/, - 415 x 10/sup -6/ and - 552 x 10/sup -6/ respectively.
- Research Organization:
- Naval Surface Weapons Center, Silver Spring, MD (USA); Ames Lab., IA (USA)
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 5188266
- Report Number(s):
- IS-M-283; CONF-8004112-1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
CURIE POINT
DATA
DATA FORMS
EXPERIMENTAL DATA
GRAPHS
INFORMATION
INTERMETALLIC COMPOUNDS
LAVES PHASES
MAGNETIC PROPERTIES
MAGNETOSTRICTION
NICKEL ALLOYS
NUMERICAL DATA
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VERY LOW TEMPERATURE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
CURIE POINT
DATA
DATA FORMS
EXPERIMENTAL DATA
GRAPHS
INFORMATION
INTERMETALLIC COMPOUNDS
LAVES PHASES
MAGNETIC PROPERTIES
MAGNETOSTRICTION
NICKEL ALLOYS
NUMERICAL DATA
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VERY LOW TEMPERATURE