Ferromagnetic carbon with enhanced Curie temperature
- 作者：Narozhnyi ; Vladimir N. ; Mü ; ller ; Karl-Hartmut ; Eckert ; Dieter ; Teresiak ; Angelika ; Dunsch ; Lothar ; et. al.
- 关键词：Ferromagnetic carbon ; C60 ; Fullerenes ; Curie temperature
- 刊名：Physica B
- 出版年：2003
- 期刊代码：53_09214526
- 类别：ph
- 出版时间：May, 2003
- 卷：329-333
- 期：Part 2
- 页码：1217-1218
- 文件大小：105 K
摘要
The discovery of a ferromagnetic form of carbon (Nature 413 (2001) 716) gives a new perspective in the investigation of magnetic materials. The existence of a ferromagnetic state with the very high Curie temperature TC
500K for a material with only s- and p-electrons as well as the nature of its underlying interaction are of great fundamental interest. Here we report on the observation of the ferromagnetically ordered state in a material obtained by high-pressure high-temperature treatment of the fullerene C60. It has a saturation magnetization more than four times larger than that reported previously. From our data we estimated the considerably higher value of TC820K.
500K for a material with only s- and p-electrons as well as the nature of its underlying interaction are of great fundamental interest. Here we report on the observation of the ferromagnetically ordered state in a material obtained by high-pressure high-temperature treatment of the fullerene C60. It has a saturation magnetization more than four times larger than that reported previously. From our data we estimated the considerably higher value of TC820K.