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Single crystals of LaNiPO were synthesized by reacting La, P and NiO at 1173K in a tin flux under argon atmosphere. A phase analysis and crystal structure determination was carried out using X-ray powder and single crystal methods. The quaternary phosphide oxide crystallizes in the tetragonal ZrCuSiAs structure (P4/nmm, a=404.53(1)pm, c=810.54(3)pm, Z=2), which is characterized by layers of edge-sharing...
Phase equilibria in the La–Sr–Co–Ni–O system were studied in air at 1100°. The samples for the study were synthesized by the standard ceramic and citrate processes. The limiting solubility and structure of La1-xSrxCo1-yNiyO3-δ and (La1-xSrx)2Co1-yNiyO4 solid solutions were determined by X‐ray powder diffraction analysis. La1-xSrxCo1-yNiyO3-δ solid solutions with 0 ≤ x ≤ 0.5 have a distorted rhombohedral...
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