Microstructure and magnetism of Co-doped PbPdO₂ films with different grain sizes

Abstract

The dependence of the magnetism of the Co-doped PbPdO2 nanograin films with peculiar spin-gapless-related feature on the grain size was studied in detail.

Electronic structure and its external electric field modulation of PbPdO2 ultrathin slabs with (002) and (211) preferred orientations

“…Tang et al . 8 explained the observed coexistence of the ferromagnetism, paramagnetism and antiferromagnetism in Co-doped PbPdO 2 film using a carrier-mediated bound magnetic polaron (BMP) model. Chen et al .…”

The influences of V and Gd dopants on the structures and electrical and magnetic properties of PbPdO2 thin films

“…From the figures, it is found that the XPS spectra of Pb 4f for three films can be divided into two pairs of characteristic peaks corresponding to Pb 4f 5/2 and Pb 4f 7/2 , which is similarly to previous studied results. 13 From Fig. 4(a) , two pairs of characteristic peaks are described as following: main peaks (136.55 eV, 141.49 eV), and satellite peaks (137.50 eV, 142.20 eV); from Fig.…”

“…The two peaks stand for Pd 3d 5/2 and Pd 3d 3/2 , which can be attributed to the formation of Pd 2+ . 13,18,19 Fig. 6(a), (b) and (c) shows the XPS spectra of O 1s in PbPdO 2 , PbPd 0.9 V 0.1 O 2 and PbPd 0.9 Gd 0.1 O 2 lms, respectively.…”

“…In the past few years, many researchers followed behind and studied theoretically and experimentally the microstructures, transport and magnetic properties of PbPdO 2 doped with different transition metal elements (such as Mn, Co, Cu, Zn, etc.). [5][6][7][8][9][10][11][12][13] Su et al prepared single phase PbPd 0.81 Co 0.19 O 2 thin lms by sol-gel spin coating and oxidation treatment. 5 It was found that the metalinsulator transition temperature of PbPd 0.81 Co 0.19 O 2 lm is 358 K, which is markedly higher than 90 K. Choo et al prepared PbPdO 2 and Pb (Pd, Co) O 2 thin lms oriented along the (020) direction by PLD, and studied ex situ annealing effects on the surface morphology, electrical and magnetic properties.…”

Strain Engineered Band Gaps and Electronic Properties in PbPdO2 and PbPd0.75Co0.25O2 Slabs

“…Moreover, the distinct different magnetoresistance effects were observed in PbPd 0.9 Cu 0.1 O 2 and PbPd 0.9 Zn 0.1 O 2 , which would be attributed to local structure deformation due to Pd/O deficiencies [ 7 ]. Based on the bound magnetic polaron (BMP) theory, the potential mechanism behind the observed ferromagnetic, paramagnetic, and antiferromagnetic properties coexisting in Co–doped PbPdO 2 film were suggested [ 8 ]. It was suggested that Pd–O hybridization in Co–doped PbPdO 2 thin films were responsible for the transition from weak localization and weak anti-localization [ 9 ].…”