论文标题
室温巨磁体效应单相多曲线
Room-temperature giant magnetotranstance effect in single-phase multiferroics
论文作者
论文摘要
由于磁极弱，低工作温度和由磁性阶引起的小电化极化，通常认为单相多用量材料被认为是无用的。结果，当前对磁电效应应用的研究主要集中在多效异质结构和复合材料上。在这里，我们报告了单相多表演中外部磁场的室温巨型效应。 1000 OE的低磁场应用于自旋驱动的多种心脏六角形BASRCO2FE11ALO22和BA0.9SR1.1CO2FE11ALO22能够导致线性磁铁系数的巨大变化，使几个阶数值通过了几个阶，导致了巨型Magnetototranstance（GMT）效果（GMT）效应（GMT）。 GMT效应与磁性多层中众所周知的巨型磁阻（GMR）效应相媲美，因此为单相多种体系的实际应用打开了一扇门。
Single-phase multiferroic materials are usually considered useless because of the weak magnetoelectric effects, low operating temperature, and small electric polarization induced by magnetic orders. As a result, current studies on applications of the magnetoelectric effects are mainly focusing on multiferroic heterostructures and composites. Here we report a room-temperature giant effect in response to external magnetic fields in single-phase multiferroics. A low magnetic field of 1000 Oe applied on the spin-driven multiferroic hexaferrites BaSrCo2Fe11AlO22 and Ba0.9Sr1.1Co2Fe11AlO22 is able to cause a huge change in the linear magnetoelectric coefficient by several orders, leading to a giant magnetotranstance (GMT) effect at room temperature. The GMT effect is comparable to the well-known giant magnetoresistance (GMR) effect in magnetic multilayers, and thus opens up a door toward practical applications for single-phase multiferroics.
