Experimental Study of the Y-Cu-Ge System at 870 K
The phase equilibrium diagram of the Y-Cu-Ge ternary system was constructed at 870 K by X-ray diffractometry, metallographic and electron probe microanalyses over the whole concentration range.
кристалічна структура
New mixed manganites-chromites RMn1–xCrxO3 and manganites-gallates RMn1–xCrxO3
Nanocrystalline powders of new mixed manganites-chromites RMn0.5Cr0.5O3 (R = Pr, Sm, Er) and manganites-gallates RMn1-xGaxO3 (R = Pr, Sm, Eu; x = 0.25, 0.5) with orthorhombic perovskite structure were obtained by sol-gel citrate route. Crytal structure parameters and microstructural parameters of the materials were established depending on the synthesis conditions. Based on the resuts obtained formation of conntinuos solid solutions RMn1-xCrxO3 in the RMnO3-RCrO3 systems and limited solid solitions in the RMnO3-RGaO3 systems were predicted.
Crystal Strucrure of the Mixed Rare Earth Ferrites Pr0,5R0,5FeO3 (R = Nd, Gd, Tb, Dy, Ho)
The work deals with the study of the phase composition and crystal structure of new mixed ferrites Pr0,5R0,5FeO3 (R = Nd, Gd, Tb, Dy, Ho) obtained by solid state reactions technique. It was established that all samples synthesized adopt orthorhombic perovskite structure isotypic with GdFeO3.