发明名称 PRODUCTING METHOD OF MN-ZN FERITE FOR VTR HEAD
摘要 The method comprises a first process for measuring material MnCO3, ZnO, and Fe2O3 and for mixing with pure water utilizing Ball Mill, a second process for filtr pressing of the mixutre, a third process for treating dried material for 3-6 hours at 12001300 deg. C , a fourth process for inputting the material and seed into crucible furnace which rotates 0.1-1.5 rpm so that the monocrystal grows 3-7 mm/hr, and a fifth process for cooling the monocrystal.
申请公布号 KR900003760(B1) 申请公布日期 1990.05.31
申请号 KR19860009332 申请日期 1986.11.06
申请人 SAMSUNG ELECTRONICS CO.LTD. 发明人 CHO KUNG-YUN
分类号 G11B5/133;(IPC1-7):G11B5/133 主分类号 G11B5/133
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