首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Size and shape control of monodisperse FePt nanoparticles
【24h】

Size and shape control of monodisperse FePt nanoparticles

机译:FePt单分散纳米颗粒的尺寸和形状控制

获取原文
获取原文并翻译 | 示例
           

摘要

Morphological control of FePt nanoparticles has been systematically studied. By varying synthetic parameters including precursors, solvents, amount of surfactants, and heating rate of the solution, the particle size from 2 to 9 nm can be tuned with 1 nm accuracy. While most particles are spherical in shape, cubic particles can be obtained when particles are greater than 7 nm. Rod-shape nanoparticles have also been obtained. The as-synthesized nanoparticles are found to be superparamagnetic at room temperature and their blocking temperature is size dependent that increases with particle size. After annealing in a reducing atmosphere, the nanoparticles form hard magnetic films with ordered fct structure and high coercivity up to 2.7 T.
机译:FePt纳米粒子的形态控制已得到系统研究。通过改变包括前体,溶剂,表面活性剂的量和溶液的加热速率在内的合成参数,可以以1 nm的精度调整2至9 nm的粒径。尽管大多数颗粒是球形的,但当颗粒大于7 nm时,可以获得立方颗粒。还获得了棒状纳米颗粒。发现所合成的纳米颗粒在室温下是超顺磁性的,并且它们的阻断温度取决于尺寸,该尺寸随颗粒尺寸而增加。在还原气氛中退火后,纳米颗粒形成具有规则的ctt结构和高达2.7 T的高矫顽力的硬磁膜。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号