A CaAl 2 Si 2 -Type Magnetic Semiconductor (Sr, Na)(Zn, Mn) 2 Sb 2 Isostructural to 122-Type Iron-Based Superconductors

A new diluted magnetic semiconductor (Sr, Na)(Zn, Mn) 2 Sb 2 has been successfully synthesized by doping Na and Mn into the parent compound SrZn 2 Sb 2 , which has a CaAl 2 Si 2 -type crystal structure (space group P 3 m 1, No. 164, hP 5) isostructural to the 122-type iron-based superconductor CaFe 2 As 2 . No magnetic ordering has been observed when only spins are doped by (Zn, Mn) substitution. Only with carriers codoped by (Sr, Na) substitution, a ferromagnetic ordering occurs below the maximum Curie temperature T C ∼ 9.5K. Comparing with other CaAl 2 Si 2 -type diluted magnetic semiconductors, we will show that negative chemical pressure suppresses the Curie temperature.

[1]  Shengli Guo,et al.  A novel diluted magnetic semiconductor (Ca,Na)(Zn,Mn)2Sb2 with decoupled charge and spin dopings , 2020 .

[2]  J. Furdyna,et al.  Anomalous critical point behavior in dilute magnetic semiconductor (Ca,Na)(Zn,Mn)2Sb2 , 2020, Physical Review Materials.

[3]  Yuzi Xu,et al.  Ferromagnetism in fluoride-antimonide SrF(Zn1-2xMnxCux)Sb with a quasi two dimensional structure , 2019, Journal of Magnetism and Magnetic Materials.

[4]  Shengli Guo,et al.  Progress on microscopic properties of diluted magnetic semiconductors by NMR and μSR , 2019, Journal of Semiconductors.

[5]  C. Jin,et al.  Ba(Zn,Co)2As2 : A diluted ferromagnetic semiconductor with n -type carriers and isostructural to 122 iron-based superconductors , 2019, Physical Review B.

[6]  Shengli Guo,et al.  Progress of novel diluted ferromagnetic semiconductors with decoupled spin and charge doping: Counterparts of Fe-based superconductors , 2018, Chinese Physics B.

[7]  Wenmin Li,et al.  (Sr1-xNax)(Cd1-xMnx)2As2: A new charge and spin doping decoupled diluted magnetic semiconductors with CaAl2Si2-type structure , 2016 .

[8]  Lei Liu,et al.  (Ca,Na)(Zn,Mn)2As2: A new spin and charge doping decoupled diluted ferromagnetic semiconductor , 2014 .

[9]  X. -. Wang,et al.  (Sr, Na)( Zn, Mn)(2)As-2: A diluted ferromagnetic semiconductor with the hexagonal CaAl2Si2 type structure , 2014, 1411.4536.

[10]  Q. Tao,et al.  Sr0.9K0.1Zn1.8Mn0.2As2: A ferromagnetic semiconductor with colossal magnetoresistance , 2014, 1409.2743.

[11]  Zhu-An Xu,et al.  K and Mn co-doped BaCd2As2: A hexagonal structured bulk diluted magnetic semiconductor with large magnetoresistance , 2013, 1311.6097.

[12]  S. Maekawa,et al.  Diluted ferromagnetic semiconductor Li(Zn,Mn)P with decoupled charge and spin doping , 2013, 1308.4929.

[13]  Quan Wang,et al.  (La1-xBax)(Zn1-xMnx)AsO: A Two Dimensional "1111" Diluted Magnetic Semiconductor in Bulk Form , 2013, 1306.4444.

[14]  Brian H. Toby,et al.  GSAS‐II: the genesis of a modern open‐source all purpose crystallography software package , 2013 .

[15]  P. Böni,et al.  New diluted ferromagnetic semiconductor with Curie temperature up to 180 K and isostructural to the ‘122’ iron-based superconductors , 2013, Nature Communications.

[16]  S. Uchida,et al.  Li(Zn,Mn)As as a new generation ferromagnet based on a I-II-V semiconductor. , 2011, Nature communications.

[17]  S. von Molnár,et al.  Enhancing the Curie temperature of ferromagnetic semiconductor (Ga,Mn)As to 200 K via nanostructure engineering. , 2011, Nano letters.

[18]  H. Ohno,et al.  Spatially homogeneous ferromagnetism of (Ga, Mn)As. , 2010, Nature Materials.

[19]  Eric S. Toberer,et al.  Electronic structure and transport in thermoelectric compounds AZn2Sb2 (A = Sr, Ca, Yb, Eu). , 2010, Dalton transactions.

[20]  P. Canfield,et al.  Pressure induced superconductivity in CaFe2As2. , 2008, Physical review letters.

[21]  S. Sarma,et al.  Spintronics: Fundamentals and applications , 2004, cond-mat/0405528.

[22]  H. Ohno,et al.  Making nonmagnetic semiconductors ferromagnetic , 1998, Science.

[23]  H. Ohno,et al.  (Ga,Mn)As: A new diluted magnetic semiconductor based on GaAs , 1996 .

[24]  J. V. Vleck,et al.  Ferromagnetic Interaction in EuO , 1961 .