Structural, magnetic and dielectric properties in 3$d$-5$d$ based Sr${}_2$FeIrO${}_6$ thin films

Abstract

The structural, magnetic and dielectric properties have been investigated in 3$d$-5$d$ based double perovskite Sr${}_2$FeIrO${}_6$ thin films deposited by pulse laser deposition technique. To understand the effect of strain, epitaxial films are grown with varying thickness as well as on different substrates i.e., SrTiO${}_3$ (100) and LaAlO${}_3$ (100). The films with highest thickness are found to be more relaxed. Atomic force microscope images indicate all films are of good quality where grain sizes increase with increase in film thickness. X-ray absorption spectroscopy measurements indicate a Ir${}^{5+}$ charge state in present films while providing a detailed picture of hybridization between Fe/Ir-$d$ and O-$p$ orbitals. The bulk antiferromagnetic transition is retained in films though the transition temperature shifts to higher temperature. Both dielectric constant (${\epsilon }_r$) and loss ($\tan \delta$) show change around the magnetic ordering temperatures of bulk Sr${}_2$FeIrO${}_6$ indicating a close relation between dielectric and magnetic behaviors. A Maxwell-Wagner type relaxation is found to follow over whole frequency range down to low temperature in present film. On changing the substrate i.e., LaAlO${}_3$ (100), the ${\epsilon }_r(T)$ and ($\tan \delta (T)$) show almost similar behavior but ${\epsilon }_r$ shows a higher value which is due to an increased strain coming from high mismatch of lattice parameters.

arXiv commentTo appear in JPCM, 22 pages, 13 figures

References in corpus (22)

• Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
• Antiferromagnetic spintronics
• Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4
• Mott physics and band topology in materials with strong spin-orbit interaction
• Emergent properties hidden in plane view: Strong electronic correlations at oxide interfaces
• Excitonic Magnetism in Van Vleck-type d^4 Mott Insulators
• Spin-Orbit Coupling in Iridium-Based 5d Compounds Probed by X-ray Absorption Spectroscopy
• Novel magnetism of Ir5+ ions in the double perovskite Sr2YIrO6
• Dimensionality Driven Spin-Flop Transition in Layered Iridates
• Lattice Instability and Competing Spin Structures in the Double Perovskite Insulator Sr2FeOsO6
• Tuning electronic structures via epitaxial strain in Sr2IrO4 thin films
• Magnetism and electronic structure of La2ZnIrO6 and La2MgIrO6: candidate Jeff =1/2 Mott insulators
• Mixing of $t_{2g}$-$e_g$ orbitals in 4d and 5d transition metal oxides
• Antiferromagnetic order and domains in Sr3Ir2O7 probed by x-ray resonant scattering
• Observation of Spin-glass-like Behavior in SrRuO3 Epitaxial Thin Films
• Tuning Magnetic Coupling in Sr${}_2$IrO${}_4$ Thin Films with Epitaxial Strain
• Temperature evolution of magnetic and transport behavior in 5\textit{d} Mott insulator Sr${}_2$IrO${}_4$: Significance of magneto-structural coupling
• Nonequilibrium low temperature phase in pyrochlore iridate Y${}_2$Ir${}_2$O${}_7$: Possibility of glass-like dynamics
• Magnetic and transport properties in pyrochlore iridates (Y${}_{1-x}$Pr${}_x$)${}_2$Ir${}_2$O${}_7$: The role of $f$-$d$ exchange interaction and $d$-$p$ orbital hybridization
• Epitaxial growth and properties of La0.7Sr0.3MnO3 thin films with micrometer wide atomic terraces
• Orbital Ordering in Fe${}_{1-x}$Mn${}_x$V${}_2$O${}_4$: A First Principles Study
• Muon-spin relaxation study of the double perovskite insulators Sr${}_{2}B$OsO${}_6$ ($B=\mathrm{Fe},\mathrm{Y},\mathrm{In}$)

Cited by in corpus (1)

• Low temperature ferromagnetism in perovskite SrIrO${}_3$ films