Effect of magnetic field on the nano-hardness of monocrystalline silicon and its mechanism
X. Zhang+, Z. P. Cai+*×
+Department of Mechanical Engineering, Tsinghua University, 100084 Beijing, China
*State Key Laboratory of Tribology, Tsinghua University, 100084 Beijing, China
×Collaborative Innovation Center of Advanced Nuclear Energy Technology, 100084 Beijing, China
Abstract
The purpose of this work is to investigate the effect of magnetic
field on the nano-hardness of monocrystalline silicon doped with phosphorous by
ion implantation. It is found that a magnetic field of certain parameters
can increase the nano-hardness of monocrystalline silicon doped with phosphorous
by ion implantation, and this increase can be eliminated by annealing
monocrystalline silicon doped with phosphorous by ion implantation at 800 °C for 780 s.
For the monocrystalline silicon doped with phosphorous by ion implantations that have not been
exposed to a magnetic field, annealing them at 800 ° for 780 s cannot
affect their nano-hardness, but exposing them to the magnetic field mentioned
previously can no longer affect their nano-hardness after annealing. The
mechanism of all these phenomena is discussed, a possible mechanism that a
magnetic field can promote the disbanding of vacancy clusters, and a possible
mechanism of magnetically stimulated clusters' disbanding and magnetoplastic
effect are put forward.