In order to synthesize boron-doped diamond, different ratio of amorphous boron powder was added into the system of graphite and pure iron powder, and mixed equally.

• 实验中将不同比例的无定形硼粉直接添加到石墨-纯铁粉末体系中并均匀混合，以此方式，将硼掺杂到高温高压合成的金刚石单晶中。