Structural and magnetic investigation of Fe3+ and Mg2+ substitution into the trigonal bipyramidal site of InGaCuO4 Public Deposited

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  • Structural and magnetic investigation of Fe³⁺ and Mg²⁺ substitution into the trigonal bipyramidal site of InGaCuO₄
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  • The solid solutions of InGa₁₋ₓFeₓCuO₄, InFeCu₁₋ₓMgₓO₄, and InGa₁₋ₓFeₓCu₁₋ₓMgₓO₄ were synthesized and characterized through the use of X – ray and neutron diffraction, and DC – magnetism measurements. All compositions of InGa₁₋ₓFeₓCuO₄ are single phase and crystallize in the R3m space group, but a transformation to the spinel InFeMgO₄ structure was observed for the other series of Fe³⁺ and Mg²⁺ − rich compounds. As a result of the similar ionic radii for Ga³⁺ and Fe³⁺, there was not an obvious change in the c/a ratio for InGa₁₋ₓFeₓCuO₄. In the hexagonal domains, the c/a ratio of InFeCu₁₋ₓMgₓO₄ and InGa₁₋ₓFeₓCu₁₋ₓMgₓO₄ showed a linear trend that can be explained by the change in electronic configurations between Cu²⁺ and Mg²⁺. All hexagonal compositions display negative Weiss temperatures, and there is an increase in the magnetic transition temperature with the addition of Fe³⁺. Additional AC magnetic susceptibility measurements for the x = 0.4 and 0.6 compositions within the InGa₁₋ₓFeₓCuO₄ solid solution show that these transitions are consistent with spin glass behavior, not long range AFM ordering.
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  • Grajczyk, R., Berthelot, R., Muir, S., Sleight, A., & Subramanian, M. (2013). Structural and magnetic investigation of Fe3+ and Mg2+ substitution into the trigonal bipyramidal site of InGaCuO4. Journal of Solid State Chemistry, 199, 102-108. doi: 10.1016/j.jssc.2012.12.010
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  • description.provenance : Submitted by Deanne Bruner (deanne.bruner@oregonstate.edu) on 2013-04-03T21:08:07ZNo. of bitstreams: 1SubramanianMasChemistryStructuralMagneticInvestigation.pdf: 713836 bytes, checksum: d47a7b96f6015573dc0a34c580285dbe (MD5)
  • This is the author's peer-reviewed final manuscript, as accepted by the publisher.
  • description.provenance : Made available in DSpace on 2013-04-03T21:09:44Z (GMT). No. of bitstreams: 1SubramanianMasChemistryStructuralMagneticInvestigation.pdf: 713836 bytes, checksum: d47a7b96f6015573dc0a34c580285dbe (MD5) Previous issue date: 2013-03
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