Valence state and magnetism of Mn-doped PbPdO2 nanograin film synthesized by sol-gel spin-coating method

Publication date: 1 February 2017
Source:Thin Solid Films, Volume 623
Author(s): Fenglin Tang, Chao Mei, Peiyu Chuang, Tingting Song, Hailin Su, Yucheng Wu, Yueran Qiao, Jung-Chun-Andrew Huang, Yen-Fa Liao
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 2+, 2+ and the mixed one of 3+ and 4+, 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.