Studies of Materials Having Significance for the Production of High Energy Magnets.
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) 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. Keywords: High energy magnetics; Rare earth alloys; Rare earth iron borides.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 03, 1987
- Accession Number
- ADA180553
Entities
People
- W. E. Wallace
Organizations
- Carnegie Mellon University