▎ 摘　　要

Ovchinnikov postulated the possibility of ferromagnetism in organic compounds having a mixed density of sp (3) and sp (2) carbon atoms. Such systems provide an interesting avenue for exploring magnetism in the absence of the quintessential d- and f-block elements as ingredients. As graphene oxide (GO) and its derivatives naturally possess a mixture of sp (3) and sp (2) carbon atoms, it is pertinent to look at them as potential candidates for Ovchinnikov ferromagnetism. We have looked at the evolution of magnetic property in a series of GO samples with a gradual increase in the degree of oxidation and hence the sp (3)/sp (2) fraction. Starting with a GO sample with a high sp (3)/sp (2) ratio, we utilize chemical reduction technique to prepare another set of reduced graphene oxide (rGO) samples. Magnetization measurements on these samples further illustrate the importance of sp (3)/sp (2) fraction on magnetic behavior suggesting GO and its derivatives as a potential Ovchinnikov ferromagnet candidate. The evolution of magnetic moment with sp (3)/sp (2) carbons can be utilized in carbon based spintronic applications.