paper

Growth of layered Lu $_{2}$ Fe $_{3}$ O $_{7}$ and Lu $_{3}$ Fe $_{4}$ O $_{10}$ single crystals exhibiting long-range charge order via the optical floating-zone method

arXiv:1902.10610 · doi:10.1016/j.jcrysgro.2019.06.003

Abstract

We report the controlled growth of single crystals of intercalated layered Lu $_{1 + n}$ Fe $_{2 + n}$ O $_{4 + 3 n - I^´}$ ( $n$ =1,2) with different oxygen stoichiometries $I^´$ . For the first time crystals sufficiently stoichiometric to exhibit superstructure reflections in X-ray diffraction attributable to charge ordering were obtained. The estimated correlation lengths tend to be smaller than for not intercalated LuFe $_{2}$ O $_{4}$ . For Lu $_{2}$ Fe $_{3}$ O $_{7}$ , two different superstructures were observed, one an incommensurate zigzag pattern similar to previous observations by electron diffraction, the other an apparently commensurate pattern with ( $\frac{1}{3} \frac{1}{3} 0$ ) propagation. Implications for the possible charge order in the bilayers are discussed. Magnetization measurements suggest reduced magnetic correlations and the absence of an antiferromagnetic phase.

7pages, 7figures

Growth of layered Lu2​Fe3​O7​ and Lu3​Fe4​O10​ single crystals exhibiting long-range charge order via the optical floating-zone method

Abstract

Growth of layered Lu $_{2}$ Fe $_{3}$ O $_{7}$ and Lu $_{3}$ Fe $_{4}$ O $_{10}$ single crystals exhibiting long-range charge order via the optical floating-zone method