Role of compensating Li/Fe incorporation in Cu_0.945Fe_0.055−xLi_xO: structural, vibrational and magnetic properties

Abstract

Monoclinic single phase Cu0.945Fe0.055−xLixO, with Cu2+ properly substituted by Fe3+ and Li1+, shows enhanced magnetic moment with stronger FM coupling due to Li1+ doping.

Oxygen and cerium defects mediated changes in structural, optical and photoluminescence properties of Ni substituted CeO2

“…This beamline operates in the energy range of 4 KeV to 25 KeV. The details and mechanism has been reported earlier [24]. XRD patterns of synthesized CNO0, CNO2, CNO5 and CNO10 (Figure 1(a)) shows (111), (200), (220), (311), (222), (400), (331) and (420) reflection planes of a cubic fluorite structure with space group Fm3m.…”

Cu 1– x Fe x O: hopping transport and ferromagnetism

“…The asymmetric O 1 s peak has been discussed in the literature to arise from three contributions: peaks appearing at approximately 533.83 eV (peak 3 : related to H 2 O adsorbed on the surface of the sample), approximately 531.89 eV (peak 2 : caused by either OH − hydroxyl groups or by chemisorbed molecular oxygen ${\text{O}}_2^{-}$) and approximately 530.15 eV (peak 1 , associated with oxygen O 2− in CuO lattice [5,18,19]). We have fitted O 1 s edge with three Gaussian peaks and found that the relative area under peak 1 is increasing with respect to peak 2 and peak 3 with increasing x.…”

“…Hence, magnetism should not be attributed to interstitial or externally existing iron clusters. [5,18,19]). We have fitted O 1s edge with three Gaussian peaks and found that the relative area under peak 1 is increasing with respect to peak 2 and peak 3 with increasing x.…”

“…Considerable literature is available on transition metal (TM) doped/substituted CuO (e.g. Fe [2], Ni-doped CuO [3], Fe/Ni co-doped CuO [4] and Fe/Li co-doped CuO [5]). However, these reports are not in agreement with each other.…”

Synthesis and characterization of different percentage (Fe2+) doped copper oxide (CuO) NPs prepared by chemical method

“…The metal oxide NPs are the good physical and chemical properties the NPs. The transition metal Oxide NPs such as MnO, CdO, CuO, ZnO, NiO, and TiO 2 for the best optical, magnetic and electrical properties for the Nanostructures numerous applications in the field of catalyst, sensor, fuel cells, drug delivery, electrochemistry and medicine [6][7][8][9][10][11][12][13]. Among the metal oxides NPs, CuO is considered to be one of the most important p-type semiconductors, Non toxic, low cost, abundant, high electrical conductivity.…”