TY - JOUR AU - Amollo, Tabitha PY - 2022/04/01 Y2 - 2024/03/29 TI - Magnetism in reduced graphene oxide-germanium quantum dot nanocomposite JF - Egerton University International Conference JA - euc VL - IS - SE - Health Systems, Science and Technology DO - UR - https://conferences.egerton.ac.ke/index.php/euc/article/view/98 SP - AB - <p>Graphene is characterized by inherent weak spin-orbit and hyperfine couplings which suit it for spin transport electronics.&nbsp; But its application in spintronics is limited by its lack of intrinsic magnetic moments coupled with the long spin relaxation lengths that result from the hyperfine coupling.&nbsp; However, localized magnetic moments can be induced in graphene by the formation of structural defects which include vacancies, edges, and adatoms.&nbsp; In this study, we report high defect-induced magnetization in reduced graphene oxide attained <em>via</em> germanium adatoms.&nbsp; The nanocomposites magnetization has both paramagnetic and ferromagnetic contributions. &nbsp;The evolution of the magnetic moments in the nanocomposites and the coercivity showed marked dependence on the Ge quantum dots size and concentration.&nbsp; Thus, our findings depict that strong defect-induced magnetism can be achieved in graphene through heavy element functionalization.</p> ER -