High-pressure synthesis, crystal structure and magnetic properties of TlCrO3 perovskite

Dalton Transactions : an International Journal of Inorganic Chemistry
Wei YiAlexei A Belik

Abstract

TlMO(3) perovskites (M(3+) = transition metals) are exceptional members of trivalent perovskite families because of the strong covalency of Tl(3+)-O bonds. Here we report on the synthesis, crystal structure and properties of TlCrO(3) investigated by Mössbauer spectroscopy, specific heat, dc/ac magnetization and dielectric measurements. TlCrO(3) perovskite is prepared under high pressure (6 GPa) and high temperature (1500 K) conditions. The crystal structure of TlCrO(3) is refined using synchrotron X-ray powder diffraction data: space group Pnma (no. 62), Z = 4 and lattice parameters a = 5.40318(1) Å, b = 7.64699(1) Å and c = 5.30196(1) Å at 293 K. No structural phase transitions are found between 5 and 300 K. TlCrO(3) crystallizes in the GdFeO(3)-type structure similar to other members of the perovskite chromite family, ACrO(3) (A(3+) = Sc, In, Y and La-Lu). The unit cell volume and Cr-O-Cr bond angles of TlCrO(3) are close to those of DyCrO(3); however, the Néel temperature of TlCrO(3) (TN≈ 89 K) is much smaller than that of DyCrO(3) and close to that of InCrO(3). Isothermal magnetization studies show that TlCrO(3) is a fully compensated antiferromagnet similar to ScCrO(3) and InCrO(3), but different from RCrO(3) (R(3+) = Y an...Continue Reading

References

Jun 16, 2005·Journal of the American Chemical Society·Masaki AzumaMikio Takano
Nov 2, 2007·Journal of the American Chemical Society·Masaki AzumaJ Paul Attfield
Jun 9, 2009·Nature Materials·Yusuke TokunagaYoshinori Tokura
Jul 15, 2009·Angewandte Chemie·Alexei A BelikEiji Takayama-Muromachi
Jul 24, 2013·Inorganic Chemistry·Alexei A Belik
Aug 3, 2013·Inorganic Chemistry·Haiyan ChenRoger Lalancette
Oct 2, 2013·Inorganic Chemistry·Alexei A BelikEiji Takayama-Muromachi
Mar 13, 2014·Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences·Chris I ThomasMatthew J Rosseinsky
Apr 3, 2014·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Alexei A Belik, Wei Yi
Aug 28, 2014·Inorganic Chemistry·Wei YiAlexei A Belik

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Citations

Mar 12, 2021·Inorganic Chemistry·Hai L FengMartha Greenblatt
May 24, 2019·Journal of the American Chemical Society·Remo N WidmerThomas D Bennett

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