13760-83-3Relevant articles and documents
Phase transformations and thermal properties of erbium trifluoride at high temperatures
Khairulin,Stankus,Lyapunov
, p. 1289 - 1292 (2000)
The density of ErF3 was measured with a gamma densimeter at temperatures from below the α-β phase transition to above the melting point. The density and volume expansivity of liquid ErF3 just above the melting point were found to be 6092 ±30 kg/m3 and (15.1 ± 0.5) x 10-5 K-1. The relative changes in density accompanying the melting and polymorphic transformation of ErF3 are 0.7±0.1 and 16.9± 1.3%, respectively. The results, together with earlier data, were used to reveal general trends in the variation of thermal properties across the ErF3 to LuF3 series.
Magnetic properties of ErxY1-xF3 solid solutions
Blanusa, Jovan,Mitric, Miodrag,Kusigerski, Vladan,Spasojevic, Vojislav,Jagli?i?, Zvonko,Pirnat, Janez,Trontelj, Zvonko
, p. 157 - 161 (2005)
The ErxY1-x F3 (x=0.1, 0.2, 0.7, 0.9, 1) solid solutions were synthesized and characterized by X-ray powder diffraction and magnetic measurements. The crystal structure refinements done by the Rietveld profile method show that no significant change of the structure parameters with the erbium concentration occurs. On the basis of DC susceptibility measurements in the 2-300 K range the lowest four crystal field levels have been determined, giving the ground level magnetic moment value of 6.7 μB. Results of M(H) studies point to the presence of complex exchange interactions between erbium ions.
Infrared spectra and quantum chemical calculations of the bridge-bonded HC(F)LnF2 (Ln = La-Lu) complexes
Gong, Yu,Wang, Xuefeng,Andrews, Lester,Chen, Mingyang,Dixon, David A.
, p. 4443 - 4452 (2011/10/10)
Lanthanide metal atoms, produced by laser ablation, were condensed with CHF3 (CDF3) in excess argon or neon at 4 K, and new infrared absorptions are assigned to the oxidative addition product fluoromethylene lanthanide difluoride complex on the basis of deuterium substitution and density functional theory frequency calculations. Two dominant bands in the 500 cm-1 region are identified as metal-fluorine stretching modes. A band in the mid-600 cm-1 region is diagnostic for the unusual fluorine bridge bond C-(F)-Ln. Our calculations show that most of the bridged HC(F)LnF2 structures are 3-6 kcal/mol lower in energy than the open CHF-LnF2 structures, which is in contrast to the open structures observed for the corresponding CH2-LnF2 methylene lanthanide difluorides. Argon-to-neon matrix shifts are 15-16 cm -1 to the blue for stretching of the almost purely ionic Ln-F bonds, as expected, but 10 cm-1 to the red for the bridge C-(F)-Ln stretching mode, which arises because Ar binds more strongly to the electropositive Ln center, decreasing the bridge bonding, and thus allowing a higher C-F stretching frequency.
Thermochemical studies on the lanthanoid complexes of trifluoroacetic acid
Yoshimura,Ohara
, p. 573 - 576 (2008/10/09)
The thermal decomposition of the lanthanoid complexes of trifluoroacetic acid (Ln(CF3COO)3·3H2O; Ln = La-Lu) was studied by TG and DTA methods. The Ln(CF3COO) 3·3H2O complexes decompose in several stages; first dehydrate to the anhydrous state, then followed by decomposition of the anhydrous salt to a stable product of LnF3. From the endothermic and exothermic data of Ln(CF3COO)3·3H2O complexes, pyrolysis behavior of the complexes is classified into three groups: (1) La-Pr salts; (2) Nd-Gd salts; (3) Tb-Lu salts. It has been shown that all the final decomposition products were found to result in the formation of LnF3.