Transport properties of transition-metal doped BiS2-based superconductors

Structure and Electronic Properties of Transition Metal Doped Kaolinite Nanoclay

In this work, a series of transition metal (Cr, Mn, Fe, and Co) doped kaolinite nanoclays were investigated by density functional theory (DFT) calculations. The influence of metal doping on geometric structure and electronic structure of kaolinite was analyzed. The ferromagnetic (FM), antiferromagnetic (AFM), and nonmagnetic (NM) states of transition metal (TM) doped kaolinite structures were s...

Transport properties of alkali-metal-doped single-wall carbon nanotubes

We report in situ measurements of four-probe dc resistance ~R! and thermopower ~S! of Csand K-doped single-wall carbon nanotube ~SWNT! mats as a function of a doping and temperature ~T!. With increasing dopant exposure, the mat resistance has been found to first decrease and then increase, exhibiting a minimum for optimal Cs doping. In contrast, for K doping, the mat resistance decreased monoto...

Superconducting and magneto-transport properties of BiS2 based superconductor PrO1-xFxBiS2 (x=0 to 0.9)

Anisotropy of Doped Transition-Metal Magnets

Calculations of the magnetocrystalline anisotropy are used to evaluate prospects for new lanthanide-free permanent magnets. Based on the requirement of transition-metal-rich phases, we investigate interstitial impurities in tetragonally distorted bcc Fe and sub stitutional impurities in hcp Co, and compare doped bulk materials with nanostructures, especially with elemental 3d and YCo5 nanoparti...

Synthesis, Characterization and Investigation of Photocatalytic Activity of transition metal-doped TiO2 Nanostructures

In this work, M-doped TiO2 nanostructures (M: Fe, Co and Ni) were synthesized by reverse microemulsion method. The as-prepared products were analyzed by different techniques such as scanning electron microscopy (SEM), Transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FT-IR). The effect of various dopants (Fe, Co and Ni) on ba...