Title :
A high orientation effect of cobalt-adsorbed gamma and chromium-dioxide particles for audio recording
Author :
Nakamura, T. ; Ozu, T. ; Tamagawa, N.
Author_Institution :
Sony, Tagajo-City, Miyagi, Japan
fDate :
1/1/1984 12:00:00 AM
Abstract :
Co-adsorbed gamma and chromium-dioxide particles were coated at magnetic fields of O, 1.0KOe, 2.5KOe to investigate magnetic and audio recording properties. We have achieved very high Rs of 91.5% and Br of 1830 gauss for Co-adsorbed gamma, and Rs of 86.3% and Br of 1700 gauss for chromium-dioxide particles coated at 2.5KOe. The increase of MOL(315Hz) was 4.4dB for Co-adsorbed gamma and 3.7dB for chromium-dioxide tape corresponding with the increase of tape Br. But the increase of bias noise level(A-weighted) was only O.6dB and O.7dB respectively.
Keywords :
Audio recording; Magnetic tape recording; Audio recording; Coatings; Dynamic range; Gaussian noise; Gaussian processes; IEC standards; Magnetic field measurement; Magnetic fields; Magnetic properties; Noise level;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1984.1063010
