MAGNETIC RECORDING CHARACTERISTICS OF SPUTTERED GAMMA-FE2O3 THIN-FILM DISKS

被引：65

作者：

HATTORI, S ^{[1
]}

ISHII, Y ^{[1
]}

SHINOHARA, M ^{[1
]}

NAKAGAWA, T ^{[1
]}

机构：

[1] FUJITSU LABS LTD,NAKAHARA KU,KAWASAKI 211,JAPAN

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1979年 / 15卷 / 06期

关键词：

D O I：

10.1109/TMAG.1979.1060465

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A thin film disk of γ-Fe2O3 for high density magnetic recording has been developed. γ-Fe2O3 films were prepared in a serial process from the reactive sputtering of on to α-Fe2O3 reduced to Fe3O4 and oxidized to γ-Fe2O3. A high coercive force of 700 Oe and a squareness ratio of 0.8 were attained for γ-(Fe0.955Ti0.025Co0.02)2O3. Recording characteristics of the disk were evaluated using a Mn-Zn ferrite head. The recording density D50 reached 1,100 bits/mm (27,900 bpi), and the number of dropout errors at 50% threshold level was less than 50 per surface. Stability versus temperature change and wear resistance were also evaluated. © 1979 IEEE

引用

页码：1549 / 1551

页数：3

共 8 条

[1]

ARMSTRONG RJ, 1966, PHYS LETT, V23, P414

[2] MAGNETOSTRICTION AND PERMEABILITY OF MAGNETITE AND COBALT-SUBSTITUTED MAGNETITE [J].