(Ba_(1−x)Na_(x))F(Zn_(1−x)Mn_(x))Sb: A novel fluoride-antimonide magnetic semiconductor with decoupled charge and spin doping  

作　　者：Xueqin Zhao Jinou Dong Licheng Fu Yilun Gu Rufei Zhang Qiaolin Yang Lingfeng Xie Yinsong Tang Fanlong Ning 

机构地区：[1]Zhejiang Province Key Laboratory of Quantum Technology and Device and Department of Physics,Zhejiang University,Hangzhou 310027,China [2]Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China [3]State Key Laboratory of Silicon Materials,Zhejiang University,Hangzhou 310027,China

出　　处：《Journal of Semiconductors》2022年第11期38-43,共6页半导体学报（英文版）

基　　金：The work was supported by the Key R&D Program of Zhejiang Province,China(2021C01002);NSF of China(No.12074333).

摘　　要：We report the successful synthesis and characterization of a novel 1111-type magnetic semiconductor(Ba_(1−x)Na_(x))F(Zn_(1−x)Mn_(x))Sb(0.05≤x≤0.175)with tetragonal ZrSiCuAs-type structure,which is isostructural to the layered iron-based superconductor La(O,F)FeAs.Na substitutions for Ba and Mn substitutions for Zn introduce carriers and local magnetic moments,respectively.Ferromagnetic interaction is formed when Na and Mn are codoped,demonstrating that local magnetic moments are mediated by carriers.Iso-thermal magnetization shows that the coercive field is as large as-12000 Oe,which is also reflected in the large split between the temperature-dependent magnetization in zero-field-cooling and field-cooling condition.AC susceptibility under zero field demonstrates that samples evolve into spin-glass state below spin freezing temperature T_(f).The measurements of temperature-dependent resistivity indicate that(Ba_(1−x)Na_(x))F(Zn_(1−x)Mn_(x))Sb exhibits semiconducting behaviour.

关 键 词：magnetic semiconductors ferromagnetic interaction carriers SPIN-GLASS 

分 类 号：O469[理学—凝聚态物理]