Studies of materials having significance for the production of high-energy magnets. Final report, 1 February 1984-31 January 1987

Technical Report · Fri Apr 03 04:00:00 EST 1987

OSTI ID:6168360

Wallace, W E

Magnetic properties (saturation magnetizations, Curie temperatures and anisotropy fields of a number of rare earth-transition metal systems are reported. Systems studied fall into five categories: (1) 1:5 and 2:17 compounds, (2) R2T14B, where R is rare earth and T is a 3d transition metal, (3) borides related to R2Fe14B, (4) intermetallic hydrides, and (5) miscellaneous alloys. The work has revealed a number of interesting features of these systems: (a) when R in RCo5 systems is partially replaced by Ti, Zr or Hf, T sub c is sharply incremented; (b) PrCo8Fe9 has a theoretical (BH) sub max of 68 MGOe; (c) the R2T14B systems exhibit the same magnetic coupling systematics as the binary RT sub x systems; (d) the R2Fe14B systems exhibit the same magnetic coupling systematic structures - conical, axial and planar anisotropy; (e) the RCo4B systems have small or negative anisotrophy and hence are unsuitable for magnetic fabrication; (f) hydrogenation weakens the uniaxial anisotrophy in R2Fe14B systems.

• Research Organization: Carnegie-Mellon Univ., Pittsburgh, PA (USA)
• OSTI ID: 6168360
• Report Number(s): AD-A-180553/0/XAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
ANISOTROPY
BORIDES
BORON COMPOUNDS
CHEMICAL REACTIONS
ELEMENTS
FABRICATION
HYDROGENATION
IRON COMPOUNDS
MAGNETIC FIELDS
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MAGNETS
MATERIALS
METALS
PHYSICAL PROPERTIES
PRODUCTION
RARE EARTH ALLOYS
RARE EARTH COMPOUNDS
TRANSITION ELEMENT COMPOUNDS