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MANGANITE WITH COLOSSAL MAGNETORESISTANCE IN TEMPERATURE RANGE OF 190-300 K
MANGANITE WITH COLOSSAL MAGNETORESISTANCE IN TEMPERATURE RANGE OF 190-300 K
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机译：190-300 K温度范围内具有大磁致电阻的锰矿
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摘要
FIELD: physics.;SUBSTANCE: polycrystalline material based on lanthanum-strontium manganite has the composition La0.810Sr0.190Mn1-x(Zn0.5Ge0.5)xO3, where x takes values from 0.148 to 0.152. The material is made from a charge containing lanthanum oxide, carbonate strontium, manganese dioxide, zinc oxide, and germanium oxide. These components are mixed and spend primary grinding in a ball mill for 4 hours with subsequent heat treatment at a temperature of 1000°C for 4 hours. Secondary grinding in a ball mill is then carried out for 10 hours, moulding and sintering at a temperature of 1200°C for 10 hours. The resulting material has a positive effect on the colossal magnetoresistance achieved in the magnetic field up to 1 T and a gently varying in a wide temperature range from 190 K to 300 K.;EFFECT: invention allows to reduce the cost of manufacturing manganite, to expand the operating temperature range of the devices based on it, eliminating the need for heat sensitive items, to provide increased reliability and reliability of measurements.;1 dwg, 1 ex
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机译：领域：物理;;物质：基于镧锶锶锰矿的多晶材料，其组成为La 0.810 Sr 0.190 Mn 1-x （Zn < Sub> 0.5 Ge 0.5 ） x O 3 ，其中x取值从0.148到0.152。该材料由包含氧化镧，碳酸盐锶，二氧化锰，氧化锌和氧化锗的装料制成。将这些成分混合，并在球磨机中初步研磨4小时，然后在1000°C的温度下热处理4小时。然后在球磨机中进行二次研磨10小时，在1200℃的温度下模制和烧结10小时。所得材料对在高达1 T的磁场中实现的巨大磁阻产生积极影响，并且在190 K至300 K的宽温度范围内缓慢变化。效果：本发明可以降低制造锰铁矿的成本。扩展基于此的设备的工作温度范围，消除了对热敏感物品的需求，从而提高了测量的可靠性和可靠性。1dwg，1 ex
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