Regensburg 2022 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
MA: Fachverband Magnetismus
MA 35: Poster 2
MA 35.37: Poster
Thursday, September 8, 2022, 16:00–18:00, P4
Growth optimization of ferromagnetic gadolinium nitride (GdN) thin films for magnon transport phenomena — •Raphael Hoepfl1,2, Manuel Müller1,2, Matthias Opel1, Stephan Geprägs1, Hans Huebl1,2,3, Rudolf Gross1,2,3, and Matthias Althammer1,2 — 1Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, Garching, Germany — 2Physik-Department, Technische Universität München, Garching, Germany — 3Munich Center for Quantum Science and Technology (MCQST), München, Germany
Ferromagnetic (FM) semiconductors are of great interest for spintronics devices. Gadolinium nitride (GdN) is one candidate for a semiconducting ferromagnet with a Curie temperature TC of 65-70 K [1]. In this study, we investigate the static and dynamic properties of FM GdN thin films by SQUID magnetometry and broadband ferromagnetic resonance experiments in a cryogenic environment. In detail, we prepare tantalum nitride (TaN)/GdN/TaN thin films on thermally oxidized Si substrates using DC magnetron sputtering, where the TaN is used as seed and protective top layer. Here, we discuss the impact of the various deposition parameters, such as deposition pressure, temperature, rate and reactive N2 gas flow on the static and dynamic magnetic properties of GdN.
[1] W. B. Mi et al., Appl. Phys. Lett. 102, 222411 (2013).