オーディオ用メタルテープ中のFe粒子 Iron Acicular Particles in Metal Audio Tapes
The lattice constant (a<SUB>0</SUB>), crystallite size (d) and the crystallite orientation of a-Fe acicular particles in commerciallyavailable audio metal tapes were studied using x-ray diffraction. The value of a<SUB>0</SUB> is determined to be 0.28669 ± 0.00005 nm, which is slightly larger than that of pure Fe. The reason of the small discrepancy of a<SUB>0</SUB> was estimated to be due to 0.1 at%-Al addition into Fe. The acicular particle consists of many crystallite: the crystallite sizes along long axis of acicular particle (22 nm) is larger than the short axis (14 nm). The tendency that the  axis of Fe crystallite aligns with the long axis of the acicular particle is observed.
粉体および粉末冶金 45(7), 621-623, 1998-07-15
Japan Society of Powder and Powder Metallurgy