Lan Changyong, Gong Jiangfeng, Liu Shijiang, Yang Shaoguang
Nanjing National Laboratory of Microstructures and Department of Physics, Nanjing University, 22 Hankou Road, Nanjing, 210093, China.
Nanoscale Res Lett. 2011 Feb 11;6(1):133. doi: 10.1186/1556-276X-6-133.
The synthesis of single-crystalline hollandite-type manganese oxides Na2-xMn8O16 nanorods by a simple molten salt method is reported for the first time. The nanorods were characterized by powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and a superconducting quantum interference device magnetometer. The magnetic measurements indicated that the nanorods showed spin glass behavior and exchange bias effect at low temperatures. The low-temperature magnetic behaviors can be explained by the uncompensated spins on the surface of the nanorods.
首次报道了通过一种简单的熔盐法合成单晶钡硬锰矿型锰氧化物Na2-xMn8O16纳米棒。通过粉末X射线衍射、扫描电子显微镜、透射电子显微镜和超导量子干涉仪磁力计对纳米棒进行了表征。磁性测量表明，纳米棒在低温下表现出自旋玻璃行为和交换偏置效应。低温磁性行为可以用纳米棒表面未补偿的自旋来解释。
