HTSC substrate and buffer layer compounds, A2MeSbO6 where A = Ba, Sr and Me = Sc, In and Ga

A study of the crystal structures and the phase transitions of the ordered double perovskites Sr2ScSbO6 and Ca2ScSbO6

“…In the first study, Sr 2 ScSbO 6 was reported as orthorhombic with unit cell parameters a¼5.678Å; b¼5.691Å; c¼8.021Å [17]. The second work reported Sr 2 ScSbO 6 as tetragonal, with a¼8.019Å; c¼8.063Å [7]. Also, there are no previous studies on the possible temperature driven phase transitions in both materials.…”

“…To the best of our knowledge, this is the first time that the room-temperature structures of Sr 2 ScSbO 6 and Ca 2 ScSbO 6 are reported. Syntheses of Sr 2 ScSbO 6 have been reported on two occasions [7,17]; however, no structural determination was reported and no space group was identified. In the first study, Sr 2 ScSbO 6 was reported as orthorhombic with unit cell parameters a¼5.678Å; b¼5.691Å; c¼8.021Å [17].…”

“…Recently, the strontium antimony oxide compounds with double perovskite structure have attracted considerable attention [3][4][5][6][7][8][9][10][11]. In our previous works [12][13][14][15][16], we have studied the structures at room temperature and the possible phase transitions at low and high temperature for several compounds of this family.…”

Ba2RETaO6(RE= Pr, Nd, Eu, and Dy), A Group of Chemically Stable Substrates for YBa2Cu3O7−δFilms

“…Phase purity of the samples was checked by powder Exploration of new ceramics as substrates for YBa 2 Cu 3 O 7Ϫͳ superconductor films remains to be an exciting X-ray diffraction method (XRD) using a Rigaku X-ray diffractometer with nickel filtered CuKͰ radiation. Differarea of research (1)(2)(3)(4). The substrate plays an important role in the development of good quality superconducting ential thermal analysis of sintered specimens was carried out to examine whether these compounds undergo phase films with high critical current density.…”

Optical and electronic properties of double perovskite Ba2ScSbO6

“…We employ the Full-Potential Linear Augmented Plane Wave (FP-LAPW) method within the framework of density functional theory, as implemented in WIEN2k, to calculate the electronic structure. In this calculation, we have used the optimum values of the lattice parameters obtained from the experimental values [6,8]. The internal parameters of the atoms have been kept fixed at the experimental values.…”