N. T. T. Hoan, N. T. Tung, N. T. T. Hang, D. T. Linh, N. V. Truong, N. X. Ca, V.T.K. Lien, D. T. Hue, N. T. H. Nga, P. V. Duong, P. M. Tan
-induced trap states. Magnetic measurements demonstrate that Co-doped CdSSe QDs exhibit weak room-temperature ferromagnetism coexisting with diamagnetic behavior, with saturation magnetization increasing up to 5% Co doping and decreasing at higher concentrations due to the onset of antiferromagnetic interactions. These results demonstrate that Co doping is an effective method for simultaneously tuning the optical and magnetic properties of CdSSe QDs, making them promising candidates for optoelectronic and spintronic applications.