Ferromagnetism in sp^(2) carbon  

作　　者：Wenxiang Wang Julienne Impundu Jiyou Jin Zhisheng Peng Hui Liu Zheng Wei Yushi Xu Yu Wang Jiawang You Weimin Fan Yong Jun Li Lianfeng Sun 

机构地区：[1]CAS Key Laboratory of Nanosystem and Hierarchical Fabrication,Nanofabrication laboratory,CAS Center for Excellence in Nanoscience,National Center for Nanoscience and Technology,Beijing 100190,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]The GBA National Institute for Nanotechnology Innovation,Guangzhou 510700,China

出　　处：《Nano Research》2023年第12期12883-12900,共18页纳米研究（英文版）

基　　金：supported by Major Nanoprojects of Ministry of Science and Technology of China(No.2018YFA0208403);the National Natural Science Foundation of China(No.21973021);The GBA National Institute for Nanotechnology Innovation,Guangdong,China(No.2020B0101020003);Chinese Academy of Sciences Project for Young Scientists in Basic Research(No.YSBR-030);Strategic Priority Research Program of Chinese Academy of Sciences(Nos.XDB36000000 and NBSDC-DB-18).

摘　　要：The bulk,pristine sp^(2) carbons,such as graphite,carbon nanotubes,and graphene,are usually assumed to be typical diamagnetic materials.However,over the past two decades,there have been many reports about the ferromagnetism in these sp^(2) carbon materials,which have attracted intense interest for basic research and potential applications.In this review,we focus on the evidence and developments of the emergent ferromagnetism in sp^(2) carbon revealed by nine kinds of experimental methods:magnetic force microscopy(MFM),magnetization measurements with physical property measurement system(PPMS),X-ray magnetic circular dichroism(XMCD),scanning tunneling microscopy(STM),miniaturized magnetic particle inspection(MPI),anomalous Hall effect(AHE),mechanical deflection of carbon nanotube cantilevers,magnetoresistance,and spin-related devices(spin field effect transistor and spin memory).The advantages,conclusions,challenges,and future of these methods are discussed.The ferromagnetism in sp^(2) carbon will open a door to explore exotic physical phenomena and lay the basis for the development of integrated circuit of spintronics,which is fundamentally different from charge-based conventional electronics.

关 键 词：FERROMAGNETISM sp^(2)carbon anomalous Hall effect spin devices MAGNETORESISTANCE 

分 类 号：O482.523[理学—固体物理]