High-pressure synthesis, crystal structures, and magnetic properties of 5d double-perovskite oxides Ca2MgOsO6 and Sr2MgOsO6

Inorganic Chemistry
Yahua YuanKazunari Yamaura

Abstract

Double-perovskite oxides Ca2MgOsO6 and Sr2MgOsO6 have been synthesized under high-pressure and high-temperature conditions (6 GPa and 1500 °C). Their crystal structures and magnetic properties were studied by a synchrotron X-ray diffraction experiment and by magnetic susceptibility, specific heat, isothermal magnetization, and electrical resistivity measurements. Ca2MgOsO6 and Sr2MgOsO6 crystallized in monoclinic (P21/n) and tetragonal (I4/m) double-perovskite structures, respectively; the degree of order of the Os and Mg arrangement was 96% or higher. Although Ca2MgOsO6 and Sr2MgOsO6 are isoelectric, a magnetic-glass transition was observed for Ca2MgOsO6 at 19 K, while Sr2MgOsO6 showed an antiferromagnetic transition at 110 K. The antiferromagnetic-transition temperature is the highest in the family. A first-principles density functional approach revealed that Ca2MgOsO6 and Sr2MgOsO6 are likely to be antiferromagnetic Mott insulators in which the band gaps open, with Coulomb correlations of ∼1.8-3.0 eV. These compounds offer a better opportunity for the clarification of the basis of 5d magnetic sublattices, with regard to the possible use of perovskite-related oxides in multifunctional devices. The double-perovskite oxides Ca2...Continue Reading

References

Jul 15, 1996·Physical Review. B, Condensed Matter·A HjelmJ M Wills
Oct 28, 1996·Physical Review Letters·J P PerdewM Ernzerhof
Nov 10, 2007·Science·Shaun P GreenAndreas Stasch
Aug 8, 2009·Physical Review Letters·Atsuo ShitadeNaoto Nagaosa
May 29, 2010·Journal of the American Chemical Society·Youguo ShiEiji Takayama-Muromachi
Jan 15, 2011·Physical Review Letters·Hiroshi WatanabeSeiji Yunoki
Sep 24, 2013·Nature Materials·A ProkofievS Paschen
Oct 5, 2013·Journal of the American Chemical Society·Youguo ShiKazunari Yamaura
Nov 5, 2013·Physical Review Letters·Avijit Kumar PaulClaudia Felser
Nov 20, 2013·Journal of the American Chemical Society·Ryan MorrowPatrick M Woodward
Feb 21, 2014·Journal of the American Chemical Society·Hai L FengKazunari Yamaura
Apr 29, 2014·Physical Review Letters·Binghai YanMartin Jansen

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Citations

Feb 18, 2016·Inorganic Chemistry·David D RussellShahab Derakhshan
Aug 31, 2016·Scientific Reports·Ryan MorrowPatrick M Woodward
Feb 14, 2019·Nature Communications·Yuki K WakabayashiHideki Yamamoto
Jun 29, 2021·ACS Omega·Khandaker Monower HossainMirza Humaun Kabir Rubel
May 19, 2017·Inorganic Chemistry·Sergey V OvsyannikovLeonid Dubrovinsky
Dec 18, 2018·Inorganic Chemistry·Hai L FengMartha Greenblatt
Apr 15, 2020·Inorganic Chemistry·Paula KayserBrendan J Kennedy

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