K and Mn co-doped BaCd2As2: a hexagonal structured bulk diluted magnetic semiconductor with large magnetoresistance

Abstract

A bulk diluted magnetic semiconductor was found in the K and Mn co-doped BaCd2As2 system. Different from recently reported tetragonal ThCr2Si2-structured II-II-V based(Ba,K)(Zn,Mn)2As2, the Ba1-yKyCd2-xMnxAs2 system has a hexagonal CaAl2Si2-type structure with the Cd2As2 layer forming a honeycomb-like network. The Mn concentration reaches up to its x ? 0.4. Magnetization measurements show that the samples undergo ferromagnetic transitions with Curie temperature up to 16 K. With low coercive field less than 10 Oe and large magnetoresistence of about -70%, the hexagonal structured Ba1-yKyCd2-xMnxAs2 can be served as a promising candidate for spin manipulations.

5 pages,4 figures.accepted for publication in JAP

References in corpus (6)

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• Thorium-doping induced superconductivity up to 56 K in Gd1-xThxFeAsO
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• NMR Investigation of the Diluted Magnetic Semiconductor Li(Zn1-xMnx)P (x = 0.1)
• Sr and Mn co-doped LaCuSO: A wide band gap oxide diluted magnetic semiconductor with TC around 200K
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Cited by in corpus (8)

• The suppression of Curie temperature by Sr doping in diluted ferromagnetic semiconductor (La1-xSrx)(Zn1-yMny)AsO
• Evidence of Ba substitution induced spin-canting in the magnetic Weyl semimetal EuCd${}_2$As${}_2$
• (Sr3La2O5)(Zn1-xMnx)2As2: A Bulk Form Diluted Magnetic Semiconductor isostructural to the "32522" Fe-based Superconductors
• Sr${}_{0.9}$K${}_{0.1}$Zn${}_{1.8}$Mn${}_{0.2}$As${}_2$: a ferromagnetic semiconductor with colossal magnetoresistance
• A substantial increase of Curie temperature in a new type of diluted magnetic semiconductors via effects of chemical pressure
• A Map of the Zintl AM2Pn2 Compounds: Influence of Chemistry on Stability and Electronic Structure
• The Magnetic Properties of 1111-type Diluted Magnetic Semiconductor (La${}_{1-x}$Ba${}_x$)(Zn${}_{1-x}$Mn${}_x$)AsO in the Low Doping Regime
• Pressure induced superconductivity bordering a charge-density-wave state in NbTe4 with strong spinorbit coupling