Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-04T21:16:29.711Z Has data issue: false hasContentIssue false
  • English
  • Français

Coarsening Behavior and Coercivity in L10-Ordered Intermetallic Fe-Pd Ferromagnets with Equiaxed Grain Morphology

Published online by Cambridge University Press:  26 February 2011

Jörg M.K. Wiezorek  and
Anirudha R. Deshpande
Jörg M.K. Wiezorek
Affiliation:
Department of Materials Science and Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
Anirudha R. Deshpande
Affiliation:
Department of Materials Science and Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
Get access

Abstract

Thermo mechanical processing of equiatomic FePd has been used to establish a nearly equiaxed microstructure that consists of mono-variant L10 ordered grains. The technically important hard magnetic properties, e.g. coercivity, of the uniaxial ferromagnetic L10-FePd with equiaxed microstructure depend on the grain size. Thus, here, the evolution of grain size during the later stages of annealing has been studied using SEM and computer assisted image analysis with the goal to determine the activation parameters for the relevant coarsening processes. Using a classical grain growth analysis the activation parameter for coarsening of the 5% largest grains in the populations of L10-ordered grains in FePd has been determined as approximately 30kcal/mol.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 842: Symposium S – Integrative and Interdisciplinary Aspects of Intermetallics , 2004 , S3.9
Copyright
Copyright © Materials Research Society 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Weller, D, Moser, A. IEEE Trans Magn 1999;35:4423 Google Scholar
2. Zhang, B, Lelovic, M, Soffa, W.A. Scr. Metall Mater 1991;25:1577 Google Scholar
3. Zhang, B, PhD thesis, University of Pittsburgh;1991 Google Scholar
4. Klemmer, T, Hoydick, D, Okumura, H, Zhang, B, Soffa, W.A. Scr. Metall. Mater 1995;33:1793 Google Scholar
5. Klemmer, T, Soffa, WA.: Solid-Solid phase transformations. Warrendale: TMS; 1994 p969.Google Scholar
6. Deshpande, A R, Wiezorek, JMK. J Magn Magn Mater (2004), 270:157.Google Scholar
7. Kulovits, A, Soffa, W A, Puschl, Pfieler W. Materials Research Society Symposium proceedings 2003; vol 753: BB5.37.1. Google Scholar
8. Kulovits, A, Soffa, W A, Puschl, W, Pfeiler, W. Proceedings of the Vlll. Seminar, Diffusion and Thermodynamics of Materials 2002; Brno, Czech Republic.Google Scholar
9. Mishin, Y, Herzig, Chr. Acta Mater 2000;48:589.Google Scholar