Inspired by the synthesis of nanometer-scale graphene quantum dots via a doping process in boron nitride (BN) sheets (Adv. Mater. 2019, 1805778), we investigated the magnetic and thermal spin transport properties of armchair BN nanoribbons containing nanoscale graphene domains. It was found that both M-QB and M-QN structures were bipolar magnetic semiconductors (BMSs). Two spin caloritronics devices were designed on the basis of the 15-6B and 15-6N nanoribbons. Spin-dependent Seebeck effects, spin-dependent Seebeck diode effects and thermoelectric diode effects were observed in these devices. This work provides theoretical guidance for the design of new spin caloritronics devices.

受到在氮化硼（BN）片中通过掺杂工艺合成纳米级石墨烯量子点的启发（Adv.Mater.2019，1805778），我们研究了包含纳米级石墨烯结构域的扶手椅BN纳米带的磁和热自旋输运性质。发现MQ B和MQ N结构都是双极磁性半导体（BMS）。在15-6 B和15-6 N纳米带的基础上设计了两个自旋量热电子器件。在这些器件中观察到自旋相关的塞贝克效应，自旋相关的塞贝克二极管效应和热电二极管效应。这项工作为新型自旋量热电子器件的设计提供了理论指导。