CAJ | 학술논문

锰基钙钛矿氧化物由于具有高的自旋极化率,其多晶样品表现出显著的低场磁电阻效应.通过把第二相材料引入到钙钛矿材料的表面或晶界,可以对颗粒边界进行表面改性,进而提高其电输运以及磁电阻性能.本文介绍了几类第二相材料,如绝缘体氧化物、金属材料、磁性材料和铁电材料,讨论了电输运性能和磁电阻提高的可能机制,展望了此类复合系统材料的良好前景.
맹기개태광양화물유우구유고적자선겁화솔,기다정양품표현출현저적저장자전조효응.통과파제이상재료인입도개태광재료적표면혹정계,가이대과립변계진행표면개성,진이제고기전수운이급자전조성능.본문개소료궤류제이상재료,여절연체양화물、금속재료、자성재료화철전재료,토론료전수운성능화자전조제고적가능궤제,전망료차류복합계통재료적량호전경.
Perovskite manganite oxides have a high spin polarization which induce the notable low-field manetoresistance effect in polycrystalline samples. Introduction second phase materials to surface or grain boundaries of perovskite materials can modify the property of granular boundaries and advance the electric transport and magnetic property furthermore. Sever- al types of second phase materials are introduced such as insulator oxides, metal materials, magnetic materials and ferroelec- tric materials, possible mechanisms of the electric transport and the magnetoresistance increase are discussed. Finaly the better prospect of such composite materials is viewed.