Different magnetic properties of rhombohedral and cubic Ni2+ doped indium oxide nanomaterials

Abstract

Transition metal ions doped indium oxide nanomaterials were potentially used as a kind of diluted magnetic semiconductors in transparent spintronic devices. In this paper, the influences of Ni2+ doped contents and rhombohedral or cubic crystalline structures of indium oxide on magnetic properties were investigated. We found that the magnetic properties of Ni2+ doped indium oxide could be transferred from room temperature ferromagnetisms to paramagnetic properties with increments of doped contents. Moreover, the different crystalline structures of indium oxide also greatly affected the room temperature ferromagnetisms due to different lattice constants and almost had no effects on their paramagnetic properties. In addition, both the ferromagnetic and paramagnetic properties were demonstrated to be intrinsic and not caused by impurities

Crystal phase transformation and doping-induced blue emission of Eu-doped InOOH and cubic/corundum-type rhombohedral In2O3nanowires

“…44 For 10 mol% Eu-doped rh-In 2 O 3 , lattice spacings of 0.276 and 0.159 nm were observed, corresponding to the (110) and (300) planes of rh-In 2 O 3 , respectively, which is consistent with the literature. 64 Fig. 4 shows the diffuse reflectance UV-visible absorption spectra and plots of [αhν] 2 versus hν for the as-prepared, 400 and 700 °C-annealed undoped, 1 mol% and 10 mol% Eu-doped powder samples.…”

Modulated multiferroic properties of MnWO4via chemical doping

“…It is noticed that the unit cell of Mn 1Àx Ni x WO 4 (x ¼ 0, 0.02, 0.04, 0.06) extends monotonously with the doping content increasing, owing to the ionic radius of Ni 2+ (0.069 nm) slightly larger than that of Mn 2+ (0.067 nm). 31,32 3.2. Magnetic behaviors Fig.…”

Recent Advances in Synthesis, Properties and Applications of Magnetic Oxide Nanomaterials

“…Results showed that these films had negative magneto-resistance and exchange bias coupling, therefore can be used in transparent spintronic applications. Sun et al [213] had studied the influence of Ni 2+ doped cubic or rhombohedral indium oxide (In 2 O 3 ) nanomaterial on magnetic properties. They observed that magnetic properties of transition metal doped indium oxide could be transferred from room temperature ferromagnetisms to paramagnetic properties with increments of doped contents.…”