AN INVESTIGATION OF THE EFFECTS OF SOLUTE ELEMENTS ON THE MAGNETOELASTIC DAMPING AND COERCIVITY IN VERY PURE IRON.
Abstract
The existence of ferromagnetic domains and domain walls in alpha iron provides the basis for a wide variety of related magnetic and magnetoelastic properties which reflect the behavior of defects in the iron lattice. The special case of solute interstitial atoms serves as a general example. The interstitial atoms tend to order with respect to the magnetic vector within a domain, and thereby tend to inhibit domain-wall motion. Since the domain walls can be induced to move by imposing either a magnetic field or a stress, there is a considerable parallelism between the results of both experimental techniques. For example, magnetic permeability has its counterpart in the strain-amplitude dependence of magnetoelastic damping; the time-dependent decrease in magnetic permeability after demagnetization has its counterpart in the time-dependent decrease in magnetoelastic damping after demagnetization; the temperature dependence of magnetic permeability has its counterpart in the magneteoelastic contribution to the dynamic modulus. The role played by magnetic- and stress-induced ordering in these phenomena is now reasonably well understood. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1967
- Accession Number
- AD0646513
Entities
People
- R. E. Maringer
Organizations
- Battelle Memorial Institute