The crystal growth and magnetic properties of Ln2LiIrO6 (Ln=La, Pr, Nd, Sm, Eu)

Crystal growth of a series of lithium garnets Ln3Li5Ta2O12 (Ln=La, Pr, Nd): Structural properties, Alexandrite effect and unusual ionic conductivity

“…Hydroxide fluxes are an excellent medium for the dissolution of lanthanide oxides, late transition metals, such as iridium [2,4], ruthenium [1,3] and, as recently demonstrated, early transition metal oxides, such as niobium and tantalum oxide [5][6][7]. In our investigation to prepare mixed lanthanide/early transition metal oxides, we obtained single crystals of a series of lanthanum containing tantalates with nominal formula Ln 3 Li 5 Ta 2 O 12 (Ln ¼ La, Pr, Nd).…”

“…As part of our ongoing work on the crystal growth of new oxides using molten alkali metal hydroxides fluxes, [1][2][3][4][5][6] we were able to obtain single crystals of the title compounds Ln 3 Li 5 Ta 2 O 12 (Ln ¼ La, Pr, Nd). Hydroxide fluxes are an excellent medium for the dissolution of lanthanide oxides, late transition metals, such as iridium [2,4], ruthenium [1,3] and, as recently demonstrated, early transition metal oxides, such as niobium and tantalum oxide [5][6][7].…”

Crystal growth and structural investigation of A2BReO6 (A=Sr, Ba; B=Li, Na)

“…Many different synthetic routes have been used for the preparation of perovskite oxides, including the traditional ceramic method [6][7][8], chimie douce [9], combustion methods [10], and low-temperature methods [11], which include hydrothermal synthesis [12], sol gel method [13], metathesis [14], and flux growth [15]. The latter approach has been used extensively by our research group to grow single crystals of double perovskites containing late transition metals, such as Ln 2 NaRuO 6 (Ln ¼ La, Pr, Nd) [16], Ln 2 LiIrO 6 (Ln ¼ La, Pr, Nd, Sm, Eu) [17], Ba 2 MOsO 6 (M ¼ Li, Na) [18], Sr 2 NiOsO 6 [19], Ca 2 NiOsO 6 [19], Ln 2 NaOsO 6 (Ln ¼ La, Pr, Nd) [20], and Ln 2 LiOsO 6 (Ln ¼ La, Pr, Nd, Sm) [21] from molten hydroxide fluxes.…”

Crystal growth of La2NaTaO6: A new monoclinically distorted double perovskite

“…When two different atoms, B and B 0 , are placed on the B sublattice with 1:1 ordering, the unit cell doubles to yield the A 2 BB 0 O 6 double perovskite structure. Compounds that adopt such structure possess various properties, such as proton conductivity [26], large dielectric constants [15,27], long-range magnetic order [2,17,18,20,[28][29][30], ionic conductivity [14] and photocatalytic ability [3,4,6,11,13].…”

“…Our group has developed an effective method based on hydroxide fluxes for the growth of single crystals of double perovskite oxides, Ln 2 BB 0 O 6 , where Ln is a trivalent lanthanide metal, B is a monovalent alkali metal and B 0 is a pentavalent platinum group metal [17][18][19][20]. The acid-base chemistry of molten hydroxide fluxes, best described by the Lux-Flood concept of oxoacidity [21,22], allows for the dissolution of a wide range of metal species, which is critical to their incorporation into a crystal.…”