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Magnetic-cations doped into a Double Perovskite Semiconductor

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arxiv 2111.12015 v1 pith:BJOHD6RN submitted 2021-11-23 cond-mat.mtrl-sci

Lun Jin , Danrui Ni , Xin Gui , Daniel B. Straus , Qiang Zhang , Robert J. Cava This is my paper
classification cond-mat.mtrl-sci
keywords magneticdoubleperovskitesr2gasbo6antiferromagneticb-cationbandcations
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We report two solid solutions based on magnetic ion doping of the double perovskite oxide Sr2GaSbO6: Sr2Ga1-xCrxSbO6 (0.1 < x < 0.4) and Sr2Ga1-xFexSbO6 (0.1 < x < 0.4). All compositions crystallize in the same space group (I4/m) as their undoped parent phase Sr2GaSbO6, with the trivalent magnetic cations Cr3+ or Fe3+ partially substituting for non-magnetic Ga3+ in one of the B-cation sites. The Cr- and Fe-doped phases display dominant antiferromagnetic coupling among the dopant magnetic moments, and exhibit decreasing band gaps with increasing substitution level.

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