Influence of exchange energy and magnetic anisotropy on the nanocrystalline alloy
- Department of Physics, Chungbuk National University, Cheongju 361-763 (Korea)
- Department of Condensed Matter Physics, Royal Institute of Technology, Stockholm 10044 (Sweden)
We have studied the influence of exchange energy and magnetic anisotropy on the magnetic properties of nanocrystalline materials. Amorphous ribbons of composition Fe{sub 88}Zr{sub 7}B{sub 4}Cu{sub 1} have been annealed between about 500 and 700{degree}C. Temperature dependence of magnetization was carried out and nanocrystallized magnetic entities were investigated using the mean field theory and random anisotropy model obtained ferromagnetic correlation length and magneto-crystalline anisotropy constant. The best soft magnetic properties were observed annealed at 650{degree}C for the smallest magneto-crystalline anisotropy constant (K{sub 1}) of about 1.40{times}10{sup 4} erg/cm{sup 3}. We obtained average magnetic anisotropy of 0.81 erg/cm{sup 3} which is almost negligible compared with K{sub 1} at an annealing temperature of 650{degree}C. The local magneto-crystalline anisotropy is randomly averaged out by strong exchange interaction so that this mechanism provides the basis for the good soft magnetic properties. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 496511
- Report Number(s):
- CONF-961141-; ISSN 0021-8979; TRN: 97:016207
- Journal Information:
- Journal of Applied Physics, Vol. 81, Issue 8; Conference: 41. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 12-15 Nov 1996; Other Information: PBD: Apr 1997
- Country of Publication:
- United States
- Language:
- English
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