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arXiv · 1912.06735

Epitaxial growth and antiferromagnetism of Sn-substituted perovskite iridate SrIr$_{0.8}$Sn$_{0.2}$O$_3$

Junyi Yang·Lin Hao·Qi Cui·Jiaqi Lin·Lukas Horak·Xuerong Liu·Lu Zhang·Huaixin Yang·Jenia Karapetrova·Jong-Woo Kim·Philip J. Ryan·Mark P. M. Dean·Jinguang Cheng·Jian Liu
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Abstract

5d iridates have shown vast emergent phenomena due to a strong interplay among its lattice, charge and spin degrees of freedom, because of which the potential in spintronic application of the thin-film form is highly leveraged. Here we have epitaxially stabilized perovskite SrIr$_{0.8}$Sn$_{0.2}$O$_3$ on [001] SrTiO$_3$ substrates through pulsed laser deposition and systematically characterized the structural, electronic and magnetic properties. Physical properties measurements unravel an insulating ground state with a weak ferromagnetism in the compressively strained epitaxial film. The octahedral rotation pattern is identified by synchrotron x-ray diffraction, resolving a mix of $a^+b^-c^-$ and $a^-b^+c^-$ domains. X-ray magnetic resonant scattering directly demonstrates a G-type antiferromagnetic structure of the magnetic order and the spin canting nature of the weak ferromagnetism.

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Junyi Yang, Lin Hao, Qi Cui, Jiaqi Lin, Lukas Horak, Xuerong Liu, Lu Zhang, Huaixin Yang, Jenia Karapetrova, Jong-Woo Kim, Philip J. Ryan, Mark P. M. Dean, Jinguang Cheng, Jian Liu. 2019-12-13. Epitaxial growth and antiferromagnetism of Sn-substituted perovskite iridate SrIr$_{0.8}$Sn$_{0.2}$O$_3$. https://doi.org/10.1103/physrevmaterials.3.124411

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