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Effect of oxygen concentration on the structural and magnetic properties of LaRh₁/₂Mn₁/₂O₃ thin films

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https://ir.library.oregonstate.edu/concern/articles/rf55zd30w

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  • Epitaxial LaRh₁/₂Mn₁/₂O₃ thin films have been grown on (001)-oriented LaAlO₃ and SrTiO₃ substrates using pulsed laser deposition. The optimized thin film samples are semiconducting and ferromagnetic with a Curie temperature close to 100 K, a coercive field of 1200 Oe, and a saturation magnetization of 1.7μB per formula unit. The surface texture, structural, electrical, and magnetic properties of the LaRh₁/₂Mn₁/₂O₃ films was examined as a function of the oxygen concentration during deposition. While an elevated oxygen concentration yields thin films with optimal magnetic properties, slightly lower oxygen concentrations result in films with improved texture and crystallinity.
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  • Sheets, W. C., Smith, A. E., Subramanian, M. A., & Prellier, W. (2009, January 27). Effect of oxygen concentration on the structural and magnetic properties of LaRh(subscript 1/2)Mn(subscript 1/2) O₃ thin films. Journal of Applied Physics, 105. doi:10.1063/1.3068174
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  • 105
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  • This work was carried out in the frame of the NoE FAME (Contract No. FP6-5001159-1), the STREP MaCoMuFi (Contract No. NMP3-CT-2006-033221) and the STREP CoMePhS (Contract No. NMP4-CT-2005-517039) supported by the European Community and by the CNRS, France. Partial support from the ANR (Contract Nos. NT05-1-45177 and NT05-3-41793) was acknowledged. The work performed at the Oregon State University was supported by the grant from National Science Foundation (No. DMR 0804167). W.C.S. was additionally supported through a Chateaubriand post-doctoral fellowship and the Conseil Régional de Basse-Normandie (CRBN).
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