Magnetostriction of single-crystal SmCo/sub 5/ and of liquid-phase sintered SmCo/sub 5/ permanent magnet material

Journal Article · Sun May 01 04:00:00 EDT 1977 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.323918· OSTI ID:7305602

Doane, D A

This paper reports measurements of the magnetostriction in both single-crystal SmCo/sub 5/ and in the liquid-phase sintered (LPS) SmCo/sub 5/ permanent magnet material at fields up to ..mu../sub o/H=21 T. By using a strain-gauge technique the changes in length in different crystallographic directions were measured as a function of the field applied perpendicular to the c axis. Extrapolation of one of the measurements shows that there would be a contraction perpendicular to the c axis of almost 10/sup -3/ cm/cm at saturation along the same direction. The magnetostriction had the expected field dependence in SmCo/sub 5/ except for the measurement containing a contribution from shear. In demagnetized LPS material, the field dependence of the magnetostriction was altered in some cases from that in the single crystal. In one case, the field dependence changed dramatically following magnetization of the LPS material parallel to the c axis.

• Research Organization: P.O. Box 21, Berkeley Heights, New Jersey 07922
• OSTI ID: 7305602
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 48:5; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
ANISOTROPY
COBALT ALLOYS
COBALT BASE ALLOYS
CRYSTALS
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETIZATION
MAGNETOSTRICTION
MAGNETS
MONOCRYSTALS
PERMANENT MAGNETS
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
SAMARIUM ALLOYS
SINTERED MATERIALS