The structure and electrical properties of PbPdO2 thin films with preferred orientation prepared by PLD

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

“…Thus, the sample surface will be exposed in the atmosphere to absorb the hydroxyl and CO 2 . 11 Compared with the doped samples, peak area percentage of II and III for the undoped sample is lowest. Thus, the content of Pb vacancies in undoped PbPdO 2 is lowest.…”

“…The detailed discussion can be found in our previous work. 11 So, the deposition of the sample on the MgO substrate can lead to the shift of the diffraction peak (111) in the high angle direction of PbPdO 2 . Therefore, the diffraction peak at 26.35° corresponds to the (111) diffraction peak of PbPdO 2 .…”

“…The main peaks can be attributed to the lattice Pb of the samples, and the satellite peaks can be attributed to Pb vacancies. 11 Moreover, the areas of main and satellite peaks for Pb 4f 5/2 and Pb 4f 7/2 in Fig. 4 were calculated.…”

“…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

“…It was found that PbPdO 2 exhibits intrinsic characteristics of narrow band gap (0.051 eV), which was much smaller than that (0.4 eV) of the PbPd 0.75 Co 0.25 O 2 slab. In our previous experimental work, PbPdO 2 with (002) preferred orientation was prepared, and its band gap was found to be close to zero [ 22 ]. It is suggested that the localized Co would be responsible for the large band gap of 0.35 eV for the PbPd 0.75 Co 0.25 O 2 bulk material.…”