Synthesis of Single-Crystalline La1-xBaxMnO3 Nanocubes with Adjustable Doping Levels
Synthesis of Single-Crystalline La1-xBaxMnO3 Nanocubes with Adjustable Doping Levels
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DOI：
10.1021/nl049266k
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发表时间：
2004-07
期刊：
影响因子：
10.8
通讯作者：
J. Urban;Ouyan Lian;M. Jo;Di Wang;Hongkun Park
中科院分区：
文献类型：
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作者：
J. Urban;Ouyan Lian;M. Jo;Di Wang;Hongkun Park
我们报道了水热合成的单晶纳米立方体组成的镧钡锰氧化物（La 1-xMnO 3）与三种不同的掺杂水平（x = 0.3，0.5，和0.6）。该合成产生具有伪立方钙钛矿结构的清楚的多面纳米立方体。典型的纳米立方体具有50至100 nm的尺寸，而与掺杂水平无关。对纳米立方体系综进行的磁性测量表明，磁性取决于掺杂水平。合成所需掺杂水平的纳米级锰氧化物的能力应该能够详细调查的尺寸依赖的磁性，巨磁阻，和纳米级相分离的演变。
We report a hydrothermal synthesis of single-crystalline nanocubes composed of lanthanum barium manganite (La1-xBaxMnO3) with three different doping levels (x = 0.3, 0.5, and 0.6). The synthesis yields clearly faceted nanocubes with a pseudo-cubic perovskite structure. Typical nanocubes have sizes ranging between 50 and 100 nm irrespective of doping level. Magnetic measurements performed on nanocube ensembles show that the magnetic properties depend on the doping level. The ability to synthesize nanoscale manganites of a desired doping level should enable detailed investigations of the size-dependent evolution of magnetism, colossal magnetoresistance, and nanoscale phase separation.