Stoichiometry issues in pulsed laser deposition of the ferromagnetic alloy NiMnSb

Cristiana E. A. Grigorescu; O. Monnereau; Stefan A. Manea; R. Notonier; Agryro Klini; V. Zorba; Alexandra Manousaki; John Giapintzakis; Costas Fotakis

doi:10.1117/12.478645

9 August 2002 Stoichiometry issues in pulsed laser deposition of the ferromagnetic alloy NiMnSb

Cristiana E. A. Grigorescu, O. Monnereau, Stefan A. Manea, R. Notonier, Agryro Klini, V. Zorba, Alexandra Manousaki, John Giapintzakis, Costas Fotakis

Author Affiliations +

Proceedings Volume 4762, ALT'01 International Conference on Advanced Laser Technologies; (2002) https://doi.org/10.1117/12.478645
Event: International Conference on: Advanced Laser Technologies (ALT'01), 2001, Constanta, Romania

Abstract

We report on the reproducible growth of stoichiometric thin films of ferromagnetic intermetallic compound NiMnSb by pulsed laser deposition (PLD) on various substrates. The films are grown at moderate temperature (around 200 degree(s)C) using polycrystalline targets. Two different substrates were employed - single crystalline silicon and InAs polycrystalline - to investigate the influence of the thin layer/substrate lattice mismatch on the quality of the grown film. XRD and EDX analyses indicate that the layers are of high crystalline quality and their stoichiometry is very close to that of the corresponding targets, respectively. SEM images show that there are droplets on the surface of the films and their composition is similar to that of the targets. Magnetic measurements performed at both room temperature and 5K find that the investigated samples have small H_c values.

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Cristiana E. A. Grigorescu, O. Monnereau, Stefan A. Manea, R. Notonier, Agryro Klini, V. Zorba, Alexandra Manousaki, John Giapintzakis, and Costas Fotakis "Stoichiometry issues in pulsed laser deposition of the ferromagnetic alloy NiMnSb", Proc. SPIE 4762, ALT'01 International Conference on Advanced Laser Technologies, (9 August 2002); https://doi.org/10.1117/12.478645

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