2013/04/30 by R. Uecker, Detlef Klimm, D. Klimm +11
Chemistry · Materials Science · Physics and Astronomy · #Analytical Chemistry (journal) #Chemistry #Crystallography #Cubic crystal system #Diffraction #Ferroelectric and Piezoelectric Materials #Lattice (music) #Lattice constant #Magnetic and transport properties of perovskites and related materials #Materials science #Metallurgy #Optics #Physics #Rare earth #Solid solution #Solid-state spectroscopy and crystallography #cond-mat.mtrl-sci
paper · pdf · doi:10.12693/aphyspola.124.295
published as Acta Physica Polonica A 124 (2013) 295-300 · 16 pages, 6 figures, 6 tables
arxiv created 2013/06/10 · openalex publication_date 2013/08/01 · arxiv updated 2017/11/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The pseudo-cubic lattice parameters of rare-earth (RE) scandate, REScO3, single crystals grown by the Czochralski technique with RE = Dy to Pr lie between about 3.95 and 4.02 . These crystals are the only available perovskite substrates in this lattice constant range that can withstand virtually any thin lm growth conditions. Two members of this series, PmScO3 and EuScO3, are, however, not suitable for substrate applications. Because the pseudo-cubic lattice parameters between neighbouring REScO3 compounds decrease with rising atomic number of the RE in about 0.01 steps, the unsuitability of PmScO3 (radioactivity) and EuScO3 (incompatibility with Si) causes an interruption in this lattice spacing sequence. To replace them, solid solutions of their adjacent rare-earth scandates, i.e., (Nd0.5Sm0.5)ScO3 and (Sm0.5Gd0.5)ScO3, were grown by the Czochralski method. Their average pseudo-cubic lattice parameters of 3.9979 and 3.9784 are very close to those of PmScO3 and EuScO3, respectively, and they show very low segregation. These qualities make these solid solutions excellent substitutes for PmScO3 and EuScO3.