Details

Autor(en) / Beteiligte

• Gatimu, Alvin J.
• Berthelot, Romain
• Muir, Sean
• Sleight, Arthur W.
• Subramanian, M.A.

Titel

Synthesis and characterization of Sr2Ir1−xMxO4 (M=Ti, Fe, Co) solid solutions

Ist Teil von

• Journal of solid state chemistry, 2012-06, Vol.190, p.257-263

Ort / Verlag

Amsterdam: Elsevier Inc

Erscheinungsjahr

2012

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The effects of Ti, Fe and Co substitutions for Ir on the structure and on the physical properties of Sr2IrO4 are investigated. A complete solid solution Sr2Ir1−xTixO4 is obtained while both Fe and Co doping are relatively limited. In each case however, the c-axis cell parameter and the initial IrO6 octahedra tilting decreases with substitution. Doping with Ti, Fe and Co results in a decrease of the magnetic susceptibility and in an increase in the paramagnetic effective moment for Co and Fe doped samples and a suppression of the weak ferromagnetic ordering observed for Sr2IrO4. Solid solutions of Sr2Ir1−xMxO4 (M=Ti, Fe, Co) have been synthesized and characterized by powder X-ray diffraction, magnetism and electrical measurements. Changes in the a parameter and decreases in both the c-axis cell parameters and the initial IrO6 octahedra tilting are found to be correlated. [Display omitted] ► Solid Solutions of Sr2Ir1−xMxO4 (M=Ti, Fe, Co) are synthesized. ► The Sr2Ir1−xTixO4 solid solution is complete while those of Fe and Co are relatively limited. ► The change in a cell parameter with substitution is much less than that of the c parameter. ► Decreased tilting and the smaller size of the M cation contrastingly affect the a parameter. ► Doping results in a suppression of the weak ferromagnetic ordering in Sr2IrO4.