Texture determinations in rare-earth-based permanent magnets
- Brookhaven National Lab., Upton, NY (United States)
- Magnequench International, Inc., Anderson, IN (United States)
Quantifying the relationship between crystallographic texture and magnetic properties is highly desirable for the engineering high (BH){sub max} magnets. Existing techniques for the evaluation of texture in permanent magnets often rely upon magnetic remanence measurements. However, such determinations are strictly applicable only to assemblies of non-interacting particles, which nullifies the use of the Stoner-Wohlfarth criteria in texture determinations of ``exchange-spring`` magnets. New techniques in the determination of texture of bulk permanent magnets are being developed to overcome these inherent experimental difficulties. Crystallographic alignment studied by transmission synchrotron x-ray diffraction as a function of position within the sample reveals insights into the development of texture with deformation level in thermomechanically-processed magnets. Information concerning texture may also be obtained by a different method based on paramagnetic susceptibility measurements. Such measurements also provide Curie temperature data, which is sensitive to chemical changes that may have occurred in the magnetic phase during processing.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 270792
- Report Number(s):
- BNL-62682; CONF-9609104-1; ON: DE96011506; TRN: AHC29617%%124
- Resource Relation:
- Conference: 9. international symposium on magnetic anisotropy and coercivity in rare-earth transition metal alloys and 14. international workshop on rare-earth magnets and their applications, Sao Paulo (Brazil), 1-5 Sep 1996; Other Information: PBD: [1996]
- Country of Publication:
- United States
- Language:
- English
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