Author:
Dong Jinou,Zhao Xueqin,Fu Licheng,Gu Yilun,Zhang Rufei,Yang Qiaolin,Xie Lingfeng,Ning Fanlong
Abstract
Abstract
We have successfully synthesized a novel diluted magnetic semiconductor (Ca1−2x
K2x
)(Zn1−
x
Mn
x
)2As2 with decoupled charge and spin doping. The substitutions of (Ca2+, K+) and (Zn2+, Mn2+) in the parent compound CaZn2As2 (space group P
m1 (No. 164)) introduce carriers and magnetic moments, respectively. Doping only Mn into CaZn2As2 does not induce any type of long range magnetic ordering. The ferromagnetic ordering arise can only when K+ and Mn2+ are simultaneously doped. The resulted maximum Curie temperature reaches ~7 K, and the corresponding coercive field is ~60 Oe. The transport measurements confirm that samples with K and Mn co-doping still behave like a semiconductor.
Subject
Materials Chemistry,Electrical and Electronic Engineering,Condensed Matter Physics,Electronic, Optical and Magnetic Materials
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