کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5466204 | 1517989 | 2017 | 5 صفحه PDF | دانلود رایگان |
- A sol-gel spin-coating method was developed for preparing Mn-doped PbPdO2 film.
- The valence state of Mn ions within PbPdO2 lattice was clarified.
- The obtained intrinsic ferromagnetism can be retained to above room temperature.
- The magnetism was explained with a carrier-mediated mechanism bridged to BMP model.
The Mn-doped PbPdO2 nanograin film with many Pb vacancies was synthesized by using a sol-gel spin-coating method. The valence states for Pb, Pd and Mn ions were found to be 2Â +, 2Â + and the mixed one of 3Â + and 4Â +, respectively. The existence of Pb vacancies was believed to result in the increase of the Mn valence. The ferromagnetism and the antiferromagnetism were found to coexist in the formed Mn-doped PbPdO2 nanograin film. The ferromagnetism which can be maintained to above the room temperature was proved to be intrinsic. The carrier-mediated mechanism bridged to bound magnetic polaron model was used to explain the coexistence of the antiferromagnetism and the ferromagnetism within the Mn-doped PbPdO2 film.
Journal: Thin Solid Films - Volume 623, 1 February 2017, Pages 14-18