(La_1–<i>x</i>Sr_<i>x</i>)(Zn_1–<i>x</i>Mn_<i>x</i>)SbO: A novel 1111-type diluted magnetic semiconductor

• DOI: 10.7498/aps.70.20201966
• Publication Date: 2021-01-01T05:18:31Z
• Authors: Hao-Jie Zhang; Ru-Fei Zhang; Li-Cheng Fu; Yi-Lun Gu; Guo-Xiang Zhi; Jin-Ou Dong; Xue-Qin Zhao; Fan-Long Ning
• Keywords: Magnetic semiconductor

Diluted magnetic semiconductor (DMS) that combines the properties of spin and charge degrees freedom, which has potential applications in field spintronic devices. In 1990s, due to breakthrough low-temperature molecular beam epitaxy technology, scientists successfully synthesized III-V DMS (Ga, Mn)As, developed some spintronics devices accordingly. However, maximum Curie temperature Mn)As is only 200 K, still below room required for practical applications. Searching diluted semiconductors with higher exploring their magnetism one focuses at present. recent years, from iron-based superconductors, a series novel have been reported. These new DMSs advantages decoupled doping, each concentration can be precisely controlled. this paper, bulk (La&lt;sub&gt;1–&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;Sr&lt;sub&gt;&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;)(Zn&lt;sub&gt;1–&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;Mn&lt;sub&gt;&lt;i&gt;x&lt;/i&gt;&lt;/sub&gt;)SbO (&lt;i&gt;x&lt;/i&gt; = 0.025, 0.050,0.075, 0.10) are synthesized, highest &lt;i&gt;T&lt;/i&gt;&lt;sub&gt;c&lt;/sub&gt; ~ 27.1 K doping level &lt;i&gt;x&lt;/i&gt; 0.10. We dope Sr&lt;sup&gt;2+&lt;/sup&gt; Mn&lt;sup&gt;2+&lt;/sup&gt; into parent material LaZnSbO introduce holes moments, respectively. The ferromagnetic ordered phase transition observed samples various concentrations. A relatively large coercive 5000 Oe iso-thermal magnetization measurement 2 K. same crystal structure as “1111-type” superconductor LaFeAsO, lattice parameter difference very small. It provides possible choice preparing multifunctional heterojunction