Structures of LuFeO3(ZnO)m (m =1, 4, 5 and 6)

Synthesis and Crystal Structures of InGaO3(ZnO)m (m = 2 and 3)

“…In the present contribution, we report about the synthesis and structural characterisation of compounds in the ZnOIn 2 O 3 -Ga 2 O 3 system. The compound InGaO 3 (ZnO) 2 could be obtained as single crystals, and to our knowledge it is the second single crystal study of such homologous compounds apart of LuFeO 3 (ZnO) m (m = 1, 4 -6) reported by Isobe et al [16,17]. In our study we were even able to locate the cation sites in the wurtzite block by X-ray diffraction and bond valence calculations.…”

“…7. Structure data of LuFeO 3 (ZnO) 3 [16] were used as starting model for the refinement. After a first refinement, the structure model was validated by bond valence calculations concerning the Ga 3+ distribution.…”

“…Thermal displacement parameters at 90 % probability. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 [16]. For the first time, the structure of InGaO 3 (ZnO) 2 from single crystal data clearly shows an ordering of the R cation being Ga 3+ which occupies the inversion boundary.…”

“…To fulfil this condition at any octahedral layer, a second inversion inside the wurtzite block has to exist. It is proposed that these compounds cristallise in the space group R 3;¯m for m = odd and P6 3 /mmc for m = even, respectively [16]. Structural details from single crystal X-ray diffraction are known of only few compounds.…”

Influence of magnetic on ferroelectric ordering inLuMnO3

“…Yakel reports ⌬ in-plane ϭ0.08 Å and ⌬ out-of-plane ϭ0.09 Å for LuMnO 3 . Isobe reports ⌬ in-plane ϭ0.048 Å and ⌬ out-of-plane ϭ0.058 Å for YbMnO 3 at Tϭ295 K. 25 These SXD experiments, however, did not include reflections from all regions of hkl space, which is necessary for SXD on non-centrosymmetric crystals.…”