| タイトル | Effect of crystallographical and geometrical changes of a ferrite head on magnetic signals during the sliding process with magnetic tape |
| 本文（外部サイト） | http://hdl.handle.net/2060/19860022256 |
| 著者（英） | Miyoshi, K.; Buckley, D. H.; Tanaka, K. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1986-01-01 |
| 言語 | eng |
| 内容記述 | This paper reviews changes in the crystalline structure and geometry of lapped Mn-Zn ferrite heads in sliding contact with magnetic tape and the effects of these changes on magnetic signals. A highly textured, polycrystalline structure was produced on the surface of a single-crystal Mn-Zn ferrite head when it was finished with an aluminum oxide lapping tape. Sliding this lapped surface against a magnetic tape produced a nearly amorphous structure. The sliding process led to a degradation in readback signal of 1 to 2 dB (short-wavelength recording). Furthermore, wear of the magnetic head caused geometrical changes in the head surface. The signal read back with the worn magnetic head was sensitive to operating parameters such as head displacement and tape tension. A change in operating parameters created head-to-tape spacings and, consequently, excessive gains or losses in the readback signal. |
| NASA分類 | NONMETALLIC MATERIALS |
| レポートNO | 86N31728
NAS 1.15:87277
NASA-TM-87277
E-2955 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/153266 |
