A structural study of the perovskite series Na0.75Ln0.25Ti0.5Nb0.5O3

Microwave dielectric characterization of the perovskite series A1/2Ln1/2TiO3–NaNbO3 (A=Na, Li; Ln=La,Nd, Sm)

“…The La compound exhibits single peak, whereas the Nd and Sm compounds shows doublet, which is in agreement with the results of Mitchell and Liferovich [18]. The space group of 0.5Na 1/2 Ln 1/2 TiO 3 -0.5NaNbO 3 could be identified as Cmcm and the Nd, Sm compounds is Pbnm according to the results of Mitchell and Liferovich [18]. The XRD patterns of (1 − x)Li 1/2 Ln 1/2 TiO 3 -xNaNbO 3 (Ln = Nd, Sm; x = 0.1-0.5) ceramics sintered at 1300 • C/2 h are shown in Fig.…”

“…Inspection of the powder XRD patterns in the 80-83 • 2Â range indicated that the La-compound adopted a different space group compared with the other compounds. The La compound exhibits single peak, whereas the Nd and Sm compounds shows doublet, which is in agreement with the results of Mitchell and Liferovich [18]. The space group of 0.5Na 1/2 Ln 1/2 TiO 3 -0.5NaNbO 3 could be identified as Cmcm and the Nd, Sm compounds is Pbnm according to the results of Mitchell and Liferovich [18].…”

A structural study of the CaLn2CuTi2O9 (Ln=Pr, Nd, Sm) and BaLn2CuTi2O9 (Ln=La, Pr, Nd) triple perovskite series

“…8a). That trend has been reported in other lanthanide containing compounds [18,33,34]. It is a common behavior for all of them that the radius of the first coordination sphere (limited by the eighth shortest bonds) increases, whereas the radius of the second coordination sphere (limited by the eighth to the twelfth shortest bonds) decreases with the substitution of a larger lanthanide in A-site.…”

Prediction of possible CaMnO3modifications using anab initiominimization data-mining approach

“…1). Besides the effect on the crystal structure, the existence and magnitude of an octahedral tilting distortion also have a large influence on a great number of physical properties (Hwang et al, 1995;Mitchell & Liferovich, 2005;Colla et al, 1993).…”