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Unexpected Room Temperature Ferromagnetism of a Ball-Milled Graphene Oxide—Melamine Mixtureстатья
- Авторы: Vasiliev Vladimir P., Kabachkov Eugene N., Kulikov Alexander V., Manzhos Roman A., Morozov Iurii G., Shulga Yury M.
- Журнал: Molecules
- Том: 27
- Номер: 22
- Год издания: 2022
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Первая страница: 7698
- DOI: 10.3390/molecules27227698
- Аннотация: Nitrogen-doped carbon nanomaterial (NDCNM) was synthesized by grinding a mixture of graphene oxide and melamine in a planetary mill with both balls and milling chamber of zirconium dioxide. In the electron spin resonance spectrum of NDCNM, a broad signal with g = 2.08 was observed in addition to a narrow signal at g = 2.0034. In the study using a vibrating-sample magnetometer, the synthesized material is presumably a ferromagnet with a coercive force of 100 Oe. The specific magnetization at 10,000 Oe is approximately 0.020 and 0.055 emu/g at room temperature and liquid nitrogen temperature, respectively.
- Добавил в систему: Кабачков Евгений Николаевич