Year: 2019
Type: article
Abstract: In this work, a series of (Ni-Ag) co-doped SnO 2 compounds i.e. Sn 1-x-y Ni x Ag y O 2 (x = 0–0.12 and y = 0–0.12) compounds have been prepared by the solid-state reaction route. The x-ray diffraction patterns (XRD) indicate that these compounds crystallize to rutile phase with tetragonal structure. Temperature variation of magnetization (M-T) of these compounds indicates that the co-doping of Ni and Ag in place of Sn in SnO 2 gives rise the increase in magnetization. One of the striking features observed from the M-T measurement is the relatively large Curie temperature ( θ C ) in the order of 721.2 K and 675.7 K for Sn 0.94 Ag 0.06 O 2 and Sn 0.94 Ni 0.06 O 2 compounds. The θ C is found to decrease systematically upon Ni-Ag co-doping. The M-H curves at the room temperature indicate that the saturation magnetization, area under the hysteresis loop and the coercive field increases with the increase in (Ni-Ag) co-doping upto x = y = 0.06 (i.e. 6%). However, for further co-doping, these parameters were found to decrease.
Source: Materials Research Express
Authors: S K Srivastava, R Brahma, S Datta, Shampa Guha, Aakansha, S S Baro, B Narzary, D R Basumatary, Manoranjan Kar, S Ravi
Language: English
Topic: ZnO doping and properties
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2985649967