Article ID Journal Published Year Pages File Type
1795215 Journal of Crystal Growth 2008 4 Pages PDF
Abstract

We report the growth of Sr2/3Ln1/3FeO3 single crystals (Ln=La, Pr, and Nd) by means of a floating zone melting method under a moderately high oxygen pressure (2–3 bar). We find that the boules are free of impurities or secondary phases but single crystals are only obtained using low growing rates. The La-based compounds crystallize in a rhombohedral structure, whereas crystals with Pr and Nd are orthorhombic. The as-grown crystals, which are oxygen deficient, exhibit smeared magnetic and resistive transitions upon cooling. The annealing at high oxygen pressure restores oxygen stoichiometry. The oxidized crystals show sharp resistive and magnetic transitions.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
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