| Abstract Scope |
van der Waals engineering of magnetism is a topic of increasing research interest in the community at present. I will discuss our recent efforts in manipulating the magnetic properties of quasi-two-dimensional layered Mn3Si2Te6 upon proton irradiation as a function of fluence 1×1015, 5×1015, 1×1016, and 1×1018 H+/cm2. In the second part, I will discuss on the electron spin resonance (ESR) properties of CrCl3 and CrI3 upon photo-excitation. In the case of CrCl3, at 10 K, the ESR signal is shifted from g = 1.492 (dark) to 1.661 (light), line width increased from 376 to 506 Oe, and the signal intensity is reduced by 1.5 times. The observed change in intensity is reversible when the light is cycled on/off. Upon photo-excitation of CrI3, the ESR signal intensity is reduced by 1.9 times; the g-value increased from 1.956 to 1.990; the linewidth increased from 1170 to 1260 Oe at 60 K. |