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Iridate

Les iridates sont les composés chimiques dont la composition combine le dioxyde d'iridium IrO2 et un autre oxyde métallique. On connaît notamment :

Les iridates peuvent être considérés comme les sels de l'acide iridique H2IrO3. Ils sont généralement ioniques, et caractérisés par l'anion iridate IrO32−.

Des éléments du groupe du platine peuvent se substituer à l'iridium, comme dans le ruthéno-iridate de cérium et de sodium (Na0,33Ce0,67)2(Ir1−xRux)2O7[8].

Notes et références

  1. ↑ (en) Mykola Abramchuk, Cigdem Ozsoy-Keskinbora, Jason W. Krizan, Kenneth R. Metz, David C. Bell et Fazel Tafti, « Cu2IrO3: A New Magnetically Frustrated Honeycomb Iridate », Journal of the American Chemical Society, vol. 139, no 43,‎ , p. 15371-15376 (DOI 10.1021/jacs.7b06911).
  2. ↑ (en) Jun J. Ishikawa, Eoin C. T. O'Farrell et Satoru Nakatsuji, « Continuous transition between antiferromagnetic insulator and paramagnetic metal in the pyrochlore iridate Eu2Ir2O7 », Physical Review B, vol. 85,‎ , article no 245109 (DOI 10.1103/PhysRevB.85.245109).
  3. ↑ (en) Zhaoming Tian, Yoshimitsu Kohama, Takahiro Tomita, Hiroaki Ishizuka, Timothy H. Hsieh et al., « Field-induced quantum metal–insulator transition in the pyrochlore iridate Nd2Ir2O7 », Nature Physics, vol. 12,‎ , p. 134-138 (DOI 10.1038/nphys3567).
  4. ↑ (en) S. K. Choi, R. Coldea, A. N. Kolmogorov, T. Lancaster, I. I. Mazin et al., « Spin Waves and Revised Crystal Structure of Honeycomb Iridate Na2IrO3 », Physical Review Letters, vol. 108,‎ , article no 127204 (DOI 10.1103/PhysRevLett.108.127204).
  5. ↑ a et b (en) Lin Hao, D. Meyers, M. P. M. Dean et Jian Liu, « Novel spin-orbit coupling driven emergent states in iridate-based heterostructures », Journal of Physics and Chemistry of Solids (en), vol. 128,‎ , p. 39-53 (DOI 10.1016/j.jpcs.2017.11.018).
  6. ↑ (en) Yoshinori Okada, Daniel Walkup, Hsin Lin, Chetan Dhital, Tay-Rong Chang et al., « Imaging the evolution of metallic states in a correlated iridate », Nature Materials, vol. 12,‎ , p. 707-713 (DOI 10.1038/nmat3653).
  7. ↑ (en) M. C. Shapiro, Scott C. Riggs, M. B. Stone, C. R. de la Cruz, S. Chi et al., « Structure and magnetic properties of the pyrochlore iridate Y2Ir2O7 », Physical Review B, vol. 85,‎ , article no 214434 (DOI 10.1103/PhysRevB.85.214434).
  8. ↑ (en) Kripasindhu Sardar, Enrico Petrucco, Craig I. Hiley, Jonathan D. B. Sharman, Peter P. Wells et al., « Water-Splitting Electrocatalysis in Acid Conditions Using Ruthenate-Iridate Pyrochlores », Angewandte Chemie, vol. 126, no 41,‎ , p. 11140-11144 (DOI 10.1002/ange.201406668).
v · m
Ir(0)
Organo-iridium(0)
Ir(I)
Organo-iridium(I)
Ir(II)
Ir(III)
Organo-iridium(III)
Ir(IV)
Ir(V)
Ir(VI)
Ir(VII)
Ir(VIII)

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