Accession Number:

ADA180553

Title:

Studies of Materials Having Significance for the Production of High Energy Magnets.

Descriptive Note:

Final rept. 1 Feb 84-31 Jan 87,

Corporate Author:

CARNEGIE-MELLON UNIV PITTSBURGH PA

Personal Author(s):

Report Date:

1987-04-03

Pagination or Media Count:

12.0

Abstract:

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 15 and 217 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. Keywords High energy magnetics Rare earth alloys Rare earth iron borides.

Subject Categories:

  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE