Significant positive magnetoresistance of graphene/carbon composite films prepared by electrospraying and subsequent heat treatment期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Significant positive magnetoresistance of graphene/carbon composite films prepared by electrospraying and subsequent heat treatment

Authors:	L.?Q.?Chen,X.?Liu,J.?T.?Chen,Z.?C.?Zhang,J.?L.?Li author-information" > author-information__contact u-icon-before" > mailto:l_j_li@yahoo.com" title=" l_j_li@yahoo.com" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,L.?J.?Wang,W.?Jiang

Affiliation:	(1) School of Materials Science and Engineering, Shanghai University, Shanghai, 200044, China;(2) School of Materials Science and Chemical Engineering, Hainan University, Haikou, 570228, China;(3) State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai, 201620, China;

Abstract:	Graphene/carbon composite films were prepared by electrospraying a graphene/polyacrylonitrile composite solution on SiO₂-coated silicon substrates and subsequent heat treatment. The as-produced graphene/carbon composite films had a porous structure comprising graphene layers. With a magnetic field applied perpendicularly to the sample, an unexpectedly significant positive magnetoresistance attributed to e–e interaction and weak localization has been observed, which constantly increases with the magnetic field in the temperature range of 300–50 K from 0 to 80 kOe.

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