摘要 |
FIELD: chemical industry branches, microelectronics. ^ SUBSTANCE: method comprises steps of placing finely divided powders of manganese, iron and sulfur into quartz ampoules; evacuating them and sealing; taking initial components in quantities corresponding to iron-manganese sulfide formula Fex Mn1-xS; heating ampoules in furnace at rate 40°C/h up to 960°C; soaking at such temperature for 10 days; cooling together with furnace; breaking produced ingots to finely dispersed powder; pressing bars; again placing them into quartz ampoules; evacuating; sealing and annealing at 1000°C for 1 day. Iron-manganese sulfides have giant magnetic resistance in wide range of concentration in temperature range 50 - 200 K. ^ EFFECT: possibility for producing small cost iron-manganese sulfides with giant magnetic resistance. ^ 2 dwg, 2 tbl
|