Rhombohedral distortion in highly magnetostrictive Laves phase compounds. [Double tetrahedron model; Tb/sub 1 - x/sub X/FE (R = Gd, Y, Dy)]

Conference · Thu Jan 01 04:00:00 EST 1976 · AIP (Am. Inst. Phys.) Conf. Proc.; (United States)

OSTI ID:7269333

Clark, A E ^[1]; Cullen, J R; McMasters, O D; Callen, E R

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1. Naval Surface Weapons Center, White Oak, MD

A model is presented which produced a magnetostrictively driven rhombohedral distortion (lambda/sub 111/) in cubic diamond-like structures. No tetragonal magnetostrictive distortion (lambda/sub 100/) is allowed, which is consistent with the experimental observations, lambda/sub 111/ much greater than lambda/sub 100/. From x-ray and single crystal measurements we find parallel lambda/sub 111//lambda/sub 100/ parallel greater than 600 for DyFe/sub 2/. Rhombohedral distortions (lambda/sub 111/) are examined in the ternary Tb/sub 1 - x/Gd/sub x/Fe/sub 2/, Tb/sub 1 - x/Y/sub x/Fe/sub 2/ and Tb/sub 1 - x/Dy/sub x/Fe/sub 2/ systems by x-ray methods. The single-ion nature of the giant Tb magnetostriction in TbFe/sub 2/ is verified.

• OSTI ID: 7269333
• Conference Information: Journal Name: AIP (Am. Inst. Phys.) Conf. Proc.; (United States) Journal Volume: 29
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOY SYSTEMS
ALLOYS
COHERENT SCATTERING
DIFFRACTION
DYSPROSIUM ALLOYS
GADOLINIUM ALLOYS
IRON ALLOYS
MAGNETIC PROPERTIES
MAGNETOSTRICTION
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
SCATTERING
TERBIUM ALLOYS
TERNARY ALLOY SYSTEMS
X-RAY DIFFRACTION
YTTRIUM ALLOYS