Magnetic susceptibilities of Eu(OH)₃: effects of crystal-field and anisotropic exchange coupling

Photoluminescence and Raman Spectroscopy Studies of Eu(OH)3 Rods at High Pressures

“…This indicates the high site symmetry of the Eu 3+ ions in Eu(OH) 3 rods. No emission from 5 D 1 and 5 D 2 of the Eu 3+ ions is detected in the Eu(OH) 3 rods because of the large vibrational energy (about 3600 cm −1 ) of the −OH radicals, which causes these transitions to be nonradiative …”

Trilacunary Keggin‐Type POMs as Versatile Building Blocks for Lanthanoid Silicotungstates

“…The variable‐temperature magnetic susceptibilities of Eu‐1 , Eu‐2 , Eu‐3 , and Tb‐1 were investigated on polycrystalline samples in an applied magnetic field of 1000 Oe over the temperature range of 5–300 K. Magnetic properties of Eu‐1 , Eu‐2 , and Eu‐3 could not be characterized because of the non‐magnetic ground term 7 F 0 of the Eu 3+ ion. Despite the low‐temperature limit, χ m of the magnetic susceptibility is nonzero owing to the term χ (0) arising from the coupling between the 7 F 0 and the first excited states 7 F l through Zeeman perturbation as observed for selected europium compounds 64. In contrast, Tb‐1 exhibits characteristic paramagnetic behavior over the entire temperature range: χ m increases slowly from 0.043 emu Oe –1 mol –1 at 300 K to 0.467 emu Oe –1 mol –1 at 25 K and then exponentially to the maximum of 1.639 emu Oe –1 mol –1 at 5 K (Figure 11).…”

Hydrothermal control, characterization, growth mechanism, and photoluminescence properties of highly crystalline 1D Eu(OH)3 nanostructures

“…The intensity of the latter is slight weaker than that of the former, which indicates the high site symmetry of Eu 3+ in the as-prepared 1D Eu(OH) 3 nanostructures. 9,22 If the intensity of the peak at 616 nm is signicantly higher than that at 592 nm, Eu 3+ occupies an asymmetric site, which is fairly common in core-shell or doped Eu materials. 23 The emission peaks at 690 nm could respectively be attributed to the 5 D 0 -F 4 transitions of Eu 3+ .…”