Ba(Zn1-2xMnxCox)2As2: A Bulk Form Diluted Magnetic Semiconductor with n-type Carriers
Huiyuan Man, Cui Ding, Shengli Guo, Guoxiang Zhi, Xin Gong, Quan Wang,, Hangdong Wang, Bin Chen, F.L. Ning
TL;DR
This paper reports the synthesis of a bulk n-type diluted magnetic semiconductor Ba(Zn1-2xMnxCox)2As2 with ferromagnetic ordering below 80 K and discusses its structural and electronic properties relevant for device integration.
Contribution
It introduces a new bulk n-type diluted magnetic semiconductor with compatible crystal structure for potential junction applications.
Findings
Ferromagnetic ordering below 80 K.
n-type carriers with ~10^17/cm3 density.
Structural compatibility with other related systems.
Abstract
We report the synthesis and characterization of bulk form diluted magnetic semiconductors Ba(Zn1-2xMnxCox)2As2 (0 <= x <= 0.15) with a crystal structure identical to that of 122-type Fe-based superconductors. Mn and Co co-doping into the parent compound BaZn2As2 results in a ferromagnetic ordering below TC ~ 80 K. Hall effect measurements indicate that the carrier are n-type with the density of ~10^17/cm3. The common crystal structure and excellent lattice matching between the p-type ferromagnetic (Ba1-yKy)(Zn1-xMnx)2As2, the n-type ferromagnetic Ba(Zn1-2xMnxCox)2As2, the antiferrmagnetic BaMn2As2 and the superconducting Ba(Fe1-xCox)2As2 systems make it possible to make various junctions between these systems through the As layer.
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Taxonomy
TopicsIron-based superconductors research · Intellectual Capital and Performance Analysis · Superconductivity in MgB2 and Alloys