In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 33, No. 12R ( 1994-12-01), p. 6542-
Abstract:
Ferromagnetic resonance measurements at 34 GHz were carried out to study the
magnetic anisotropy field of the acicular Fe particles in commercially available particulate metal tapes for audio recording. The value of the average anisotropy field ( H a )
due to the acicular shape of the oriented particles has been determined to be 7.57 kOe, assuming the saturation magnetization (4π M ) of 17.2 kG, 80% of bulk Fe. Using
the obtained H a value, the axial ratio of the acicular particles is deduced as 4.8.
The linewidth of 5 kOe along the tape length direction is four times as large as that of video Co-γ-Fe 2 O 3 tapes, which is due to a large distribution of the Fe particle axis and/or pores in the particles.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.33.6542
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1994
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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