Possible use of the half-Hausler alloy NiMnSb in spintronics: synthesis and physical properties of arc melted NiMnSb and of NiMnSb thin films grown on InSb by pulsed laser deposition

Gardelis, S., Androulakis, J., Monnereau, O., Buckle, Philip Derek ORCID: https://orcid.org/0000-0001-9508-7783 and Giapintzakis, J. 2005. Possible use of the half-Hausler alloy NiMnSb in spintronics: synthesis and physical properties of arc melted NiMnSb and of NiMnSb thin films grown on InSb by pulsed laser deposition. Journal of Physics: Conference Series 10 , pp. 167-170. 10.1088/1742-6596/10/1/041

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Abstract

We report the growth of single-phase, stoichiometric polycrystalline thin films of the half-Heusler ferromagnet NiMnSb, predicted to be half-metallic, on single crystal (100) InSb substrates heated at 200 °C by pulsed laser deposition (PLD). The NiMnSb target used for the PLD deposition was synthesized by arc melting and had a saturation magnetization, MS (5K) = 4μB/formula unit. The films exhibited saturation magnetization, MS (5K) = 4μB/formula unit and coercive fields of 2 Oe at 300 K, indicating good structural quality. The temperature dependence of the saturation magnetization shows that at low temperature (T < 200 K) the system behaves like a Heisenberg ferromagnet as expected for a half-metal, while at T > 200 K behaves like an itinerant ferromagnet.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	Institute of Physics
ISSN:	1742-6588
Last Modified:	19 May 2023 01:41
URI:	https://orca.cardiff.ac.uk/id/eprint/46190

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