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A new diluted magnetic semiconductor: The half-metallic ferromagnet CoTi(1-x)FexSb

Benjamin Balke·Kristian Kroth·Gerhard H. Fecher·Claudia Felser
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Abstract

Half-Heusler compounds with 18 valence electrons are semi-conducting. It will be shown that doping with electrons results in half-metallic ferromagnets, similar to the case of diluted semi-conductors. CoTiSb is known to be a semi-conducting Half-Heusler compound. Doping by Fe is expected to result in ferromagnetic order. It was found that Ti can be replaced by up to about 10% Fe while its crystal structure still remains C1b, which was proved by X-ray powder diffraction. SQUID magnetometry revealed a magnetic moment of 0.32 mB per unit cell at 5K.

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Benjamin Balke, Kristian Kroth, Gerhard H. Fecher, Claudia Felser. 2006-09-02. A new diluted magnetic semiconductor: The half-metallic ferromagnet CoTi(1-x)FexSb. https://doi.org/10.1063/1.2837884

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