Web15 mrt. 2011 · Gd3+-doped Sb2Se3 nanorods were synthesized by coreduction method at 180°C and pH = 12 for 48 h. Powder XRD patterns indicate that the Gd x Sb 2 − x Se3 crystals ( x = 0.00 –0.04) are ... Web25 mrt. 2024 · The Gd 3+ presents a higher ionic radius and has the capacity to promote a distortion of the electronic cloud. To investigate the specific area and the porosity of the …
Influence of Gd3+-substitution on structural, magnetic, dielectric …
Web25 mrt. 2024 · It is known that the ionic radius of the Gd 3+ and Zn 2+ is 0.94 Å and 0.74 Å, respectively [ 45 ]. The wurtzite presents an open structure with interstices that can accommodate the Gd 3+, suggesting that rare-earth 3 + ions are replacing or displacing Zn 2+ ions in the crystalline structure. Web1 sep. 2024 · The equations used to calculate ionic radii of both A and B sites of ferrites have a parameter ‘u’ known as oxygen parameter. In Table 3, hopping lengths and ionic radii values for all the compositions of NiGd x Fe 2-x O 4 ferrites are depicted. The measurements involved in the estimation of cationic distribution revealed the … green led lights meaning
Enhanced luminescence intensity of Y2O3:Er3+ phosphor by using ...
WebThese trends are opposite to that expected based on ionic-radii and tolerance factor arguments. This anomalous behavior is attributed to an ion-size mismatch (cation variance) effect on the A-site between the Ba2+ and Gd3+ ions that induces local strain in the lattice that suppresses the reduction in the c/a ratio and cell volume, and as a consequence in … Web7 sep. 2024 · With the optimization of Al/Ga ratio and concentration of Mn ions, a broad emission band ranging from 550 to 800 nm (bandwidth = 250 nm) was achieved from Gd … Web21 jul. 2024 · The gadolinium (Gd3+) substituted zinc ferrite nanoparticles (ZnFe2−xGdxO4) for Gd3+ (x = 0.00, 0.05, 0.10, 0.20) have been synthesized by honey mediated sol–gel auto-combustion method. The X-ray diffraction study revealed the formation of spinel ferrite crystal structure. The Raman spectroscopy and Fourier transform infrared spectroscopy … green led lights battery operated