Doping Nanoscale Graphene Domains Improves Magnetism in Hexagonal Boron Nitride
Source abstract
Abstract
Abstract Carbon doping can induce unique and interesting physical properties in hexagonal boron nitride (h‐BN). Typically, isolated carbon atoms are doped into h‐BN. Herein, however, the insertion of nanometer‐scale graphene quantum dots (GQDs) is demonstrated as whole units into h‐BN sheets to form h‐CBN. The h‐CBN is prepared by using GQDs as seed nucleations for the epitaxial growth of h‐BN along the edges of GQDs without the assistance of metal catalysts. The resulting h‐CBN sheets possess a uniform distrubution of GQDs in plane and a high porosity macroscopically. The h‐CBN tends to form in small triangular sheets which suggests an enhanced crystallinity compared to the h‐BN synthesized under the same conditions without GQDs. An enhanced ferromagnetism in the h‐CBN emerges due to the spin polarization and charge asymmetry resulting from the high density of CN and CB bonds at the boundary between the GQDs and the h‐BN domains. The saturation magnetic moment of h‐CBN reaches 0.033 emu g−1 at 300 K, which is three times that of as‐prepared single carbon‐doped h‐BN.
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Research context
OpenAlex topics: Graphene research and applications · 2D Materials and Applications · ZnO doping and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Materials Science and NanoEngineering Rice University Houston TX 77005 USA
Chemicobiology and Functional Materials Institute Nanjing University of Science and Technology Nanjing 210094 China
Department of Chemical and Environmental Engineering University of Cincinnati Cincinnati OH 45221 USA
Texas Center for Superconductivity University of Houston Houston TX 77004 USA
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan 430070 China
Advanced Functional Material Laboratory Department of Physics Tezpur University (Central University) Tezpur 784028 India
Department of Chemistry Rice University Houston TX 77005 USA
Lawrence Berkeley National Laboratory 1 Cyclotron Road Berkeley CA 94720 USA
Funding
National Natural Science Foundation of China · Natural Science Foundation of Jiangsu Province
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