Metamagnetic effects in epitaxial BaFe 1.8 Cr 0.2 As 2 thin films

J. Engelmann (), K.H. Müller, K. Nenkov, L. Schultz, B. Holzapfel and S. Haindl

The European Physical Journal B: Condensed Matter and Complex Systems, 2012, vol. 85, issue 12, 1-4

Abstract: Epitaxial BaFe 1.8 Cr 0.2 As 2 thin films with the tetragonal c-axis perpendicular to the thin film surface were grown on (LaAlO 3 ) 0.3 (Sr 2 AlTaO 6 ) 0.7 (LSAT) single crystalline substrates using pulsed laser deposition (PLD). Resistive measurements indicate the existence of two transitions at temperatures of about 80 K and 40 K. The transition at 80 K is attributed to the structural transition from the high temperature tetragonal phase to the low temperature orthorhombic phase accompanied with the magnetic transition from a paramagnetic to an antiferromagnetic state as known for doped bulk systems. Below T ≈ 40 K the magnetization curves measured perpendicularly to the orthorhombic c-axis in fields up to 9 Tesla show two inflexion points indicating metamagnetic transitions. Copyright EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2012

Keywords: Solid State and Materials (search for similar items in EconPapers)
Date: 2012
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DOI: 10.1140/epjb/e2012-30919-x

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